/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:23:18,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:23:18,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:23:18,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:23:18,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:23:18,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:23:18,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:23:18,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:23:18,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:23:18,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:23:18,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:23:18,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:23:18,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:23:18,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:23:18,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:23:18,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:23:18,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:23:18,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:23:18,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:23:18,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:23:18,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:23:18,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:23:18,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:23:18,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:23:18,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 13:23:18,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 13:23:18,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 13:23:18,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 13:23:18,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 13:23:18,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 13:23:18,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 13:23:18,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 13:23:18,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 13:23:18,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:23:18,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:23:18,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:23:18,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 13:23:18,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:23:18,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:23:18,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:23:18,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:23:18,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:23:18,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:23:18,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:23:18,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:23:18,125 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:23:18,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:23:18,125 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:23:18,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:23:18,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:23:18,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:23:18,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:23:18,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:23:18,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:23:18,126 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:23:18,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:23:18,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:23:18,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:23:18,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:23:18,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:23:18,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:23:18,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:23:18,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:23:18,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:23:18,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:23:18,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:23:18,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:23:18,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:23:18,127 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:23:18,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:23:18,128 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:23:18,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:23:18,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:23:18,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:23:18,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:23:18,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:23:18,336 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:23:18,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-01-18 13:23:18,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab272853/1495a730a4bc4c1b8a40ff2d1c2e2aeb/FLAG0ef8a3590 [2022-01-18 13:23:18,710 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:23:18,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-01-18 13:23:18,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab272853/1495a730a4bc4c1b8a40ff2d1c2e2aeb/FLAG0ef8a3590 [2022-01-18 13:23:18,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab272853/1495a730a4bc4c1b8a40ff2d1c2e2aeb [2022-01-18 13:23:18,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:23:18,727 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:23:18,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:23:18,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:23:18,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:23:18,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3c6b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18, skipping insertion in model container [2022-01-18 13:23:18,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:23:18,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:23:18,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c[1872,1885] [2022-01-18 13:23:18,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:23:18,925 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:23:18,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c[1872,1885] [2022-01-18 13:23:18,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:23:18,944 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:23:18,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18 WrapperNode [2022-01-18 13:23:18,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:23:18,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:23:18,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:23:18,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:23:18,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,966 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-01-18 13:23:18,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:23:18,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:23:18,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:23:18,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:23:18,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:23:18,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:23:18,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:23:18,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:23:18,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (1/1) ... [2022-01-18 13:23:18,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:23:18,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:23:19,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 13:23:19,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 13:23:19,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 13:23:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 13:23:19,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 13:23:19,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 13:23:19,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 13:23:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 13:23:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:23:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:23:19,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:23:19,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:23:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 13:23:19,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:23:19,036 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 13:23:19,092 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:23:19,093 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:23:19,226 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:23:19,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:23:19,231 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 13:23:19,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:23:19 BoogieIcfgContainer [2022-01-18 13:23:19,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:23:19,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:23:19,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:23:19,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:23:19,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:23:18" (1/3) ... [2022-01-18 13:23:19,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6660fdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:23:19, skipping insertion in model container [2022-01-18 13:23:19,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:23:18" (2/3) ... [2022-01-18 13:23:19,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6660fdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:23:19, skipping insertion in model container [2022-01-18 13:23:19,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:23:19" (3/3) ... [2022-01-18 13:23:19,237 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-01-18 13:23:19,240 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:23:19,241 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:23:19,241 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 13:23:19,241 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:23:19,269 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,273 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,273 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,273 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,273 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,273 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,274 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,275 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,275 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,275 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,282 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:23:19,287 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 13:23:19,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:23:19,321 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 13:23:19,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 13:23:19,329 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 94 transitions, 204 flow [2022-01-18 13:23:19,390 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1076 states, 1075 states have (on average 2.473488372093023) internal successors, (2659), 1075 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:19,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 1076 states, 1075 states have (on average 2.473488372093023) internal successors, (2659), 1075 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:19,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:19,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:19,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395040, now seen corresponding path program 1 times [2022-01-18 13:23:19,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:19,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875619565] [2022-01-18 13:23:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:19,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:20,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:20,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875619565] [2022-01-18 13:23:20,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875619565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:20,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:20,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:20,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543617370] [2022-01-18 13:23:20,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:20,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:20,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:20,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:20,224 INFO L87 Difference]: Start difference. First operand has 1076 states, 1075 states have (on average 2.473488372093023) internal successors, (2659), 1075 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:21,342 INFO L93 Difference]: Finished difference Result 1343 states and 3319 transitions. [2022-01-18 13:23:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:23:21,344 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:21,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:21,357 INFO L225 Difference]: With dead ends: 1343 [2022-01-18 13:23:21,357 INFO L226 Difference]: Without dead ends: 1210 [2022-01-18 13:23:21,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:23:21,361 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 300 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:21,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2241 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:23:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-01-18 13:23:21,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1154. [2022-01-18 13:23:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 2.486556808326106) internal successors, (2867), 1153 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 2867 transitions. [2022-01-18 13:23:21,446 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 2867 transitions. Word has length 79 [2022-01-18 13:23:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:21,447 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 2867 transitions. [2022-01-18 13:23:21,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 2867 transitions. [2022-01-18 13:23:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:21,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:21,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:21,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 13:23:21,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:21,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1423500610, now seen corresponding path program 2 times [2022-01-18 13:23:21,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:21,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418144213] [2022-01-18 13:23:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:21,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:21,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:21,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418144213] [2022-01-18 13:23:21,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418144213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:21,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:21,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:21,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120610183] [2022-01-18 13:23:21,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:21,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:21,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:21,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:21,930 INFO L87 Difference]: Start difference. First operand 1154 states and 2867 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:22,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:22,908 INFO L93 Difference]: Finished difference Result 1335 states and 3296 transitions. [2022-01-18 13:23:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:23:22,909 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:22,913 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 13:23:22,913 INFO L226 Difference]: Without dead ends: 1237 [2022-01-18 13:23:22,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:23:22,915 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 281 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:22,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2439 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-01-18 13:23:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1158. [2022-01-18 13:23:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4840103716508213) internal successors, (2874), 1157 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2874 transitions. [2022-01-18 13:23:22,937 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2874 transitions. Word has length 79 [2022-01-18 13:23:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:22,937 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2874 transitions. [2022-01-18 13:23:22,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2874 transitions. [2022-01-18 13:23:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:22,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:22,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:22,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 13:23:22,940 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2137737888, now seen corresponding path program 3 times [2022-01-18 13:23:22,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:22,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893640486] [2022-01-18 13:23:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:22,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:23,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:23,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893640486] [2022-01-18 13:23:23,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893640486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:23,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:23,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:23,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34650968] [2022-01-18 13:23:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:23,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:23,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:23,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:23,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:23,339 INFO L87 Difference]: Start difference. First operand 1158 states and 2874 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:24,267 INFO L93 Difference]: Finished difference Result 1303 states and 3212 transitions. [2022-01-18 13:23:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:23:24,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:24,271 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 13:23:24,271 INFO L226 Difference]: Without dead ends: 1190 [2022-01-18 13:23:24,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:23:24,273 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 277 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:24,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2614 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:24,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-01-18 13:23:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1146. [2022-01-18 13:23:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.48471615720524) internal successors, (2845), 1145 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2845 transitions. [2022-01-18 13:23:24,292 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2845 transitions. Word has length 79 [2022-01-18 13:23:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:24,292 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2845 transitions. [2022-01-18 13:23:24,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2845 transitions. [2022-01-18 13:23:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:24,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:24,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:24,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 13:23:24,295 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:24,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1686538594, now seen corresponding path program 4 times [2022-01-18 13:23:24,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:24,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043900391] [2022-01-18 13:23:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:24,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:24,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:24,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043900391] [2022-01-18 13:23:24,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043900391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:24,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:24,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:24,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210831168] [2022-01-18 13:23:24,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:24,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:24,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:24,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:24,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:24,657 INFO L87 Difference]: Start difference. First operand 1146 states and 2845 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:25,613 INFO L93 Difference]: Finished difference Result 1353 states and 3337 transitions. [2022-01-18 13:23:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:23:25,613 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:25,618 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:23:25,618 INFO L226 Difference]: Without dead ends: 1255 [2022-01-18 13:23:25,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:23:25,619 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 266 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:25,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2743 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-01-18 13:23:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1170. [2022-01-18 13:23:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 2.4833190761334474) internal successors, (2903), 1169 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-01-18 13:23:25,640 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-01-18 13:23:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:25,640 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-01-18 13:23:25,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-01-18 13:23:25,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:25,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:25,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:25,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 13:23:25,643 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:25,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash -370005702, now seen corresponding path program 5 times [2022-01-18 13:23:25,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:25,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726521047] [2022-01-18 13:23:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:25,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:25,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:25,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726521047] [2022-01-18 13:23:25,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726521047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:25,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:25,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:25,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961210244] [2022-01-18 13:23:25,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:25,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:25,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:25,951 INFO L87 Difference]: Start difference. First operand 1170 states and 2903 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:26,778 INFO L93 Difference]: Finished difference Result 1321 states and 3249 transitions. [2022-01-18 13:23:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:23:26,779 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:26,783 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 13:23:26,783 INFO L226 Difference]: Without dead ends: 1170 [2022-01-18 13:23:26,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:23:26,786 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 265 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:26,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 2713 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-01-18 13:23:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1130. [2022-01-18 13:23:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.4809565987599647) internal successors, (2801), 1129 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2801 transitions. [2022-01-18 13:23:26,806 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2801 transitions. Word has length 79 [2022-01-18 13:23:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:26,807 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2801 transitions. [2022-01-18 13:23:26,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2801 transitions. [2022-01-18 13:23:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:26,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:26,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:26,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 13:23:26,813 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:26,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1723463452, now seen corresponding path program 6 times [2022-01-18 13:23:26,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:26,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183091557] [2022-01-18 13:23:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:26,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:27,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:27,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183091557] [2022-01-18 13:23:27,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183091557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:27,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:27,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:23:27,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339875705] [2022-01-18 13:23:27,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:27,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:23:27,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:27,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:23:27,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:23:27,180 INFO L87 Difference]: Start difference. First operand 1130 states and 2801 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:28,948 INFO L93 Difference]: Finished difference Result 1388 states and 3423 transitions. [2022-01-18 13:23:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:23:28,948 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:28,952 INFO L225 Difference]: With dead ends: 1388 [2022-01-18 13:23:28,953 INFO L226 Difference]: Without dead ends: 1290 [2022-01-18 13:23:28,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=2143, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:23:28,954 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 310 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:28,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2749 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 13:23:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-01-18 13:23:28,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1158. [2022-01-18 13:23:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4805531547104582) internal successors, (2870), 1157 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-01-18 13:23:28,977 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-01-18 13:23:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:28,977 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-01-18 13:23:28,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:28,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-01-18 13:23:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:28,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:28,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:28,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 13:23:28,979 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:28,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1254970952, now seen corresponding path program 7 times [2022-01-18 13:23:28,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:28,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12504476] [2022-01-18 13:23:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:28,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:29,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:29,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12504476] [2022-01-18 13:23:29,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12504476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:29,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:29,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:23:29,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698432099] [2022-01-18 13:23:29,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:29,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:23:29,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:29,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:23:29,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:23:29,304 INFO L87 Difference]: Start difference. First operand 1158 states and 2870 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:30,330 INFO L93 Difference]: Finished difference Result 1344 states and 3306 transitions. [2022-01-18 13:23:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:23:30,330 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:30,334 INFO L225 Difference]: With dead ends: 1344 [2022-01-18 13:23:30,334 INFO L226 Difference]: Without dead ends: 1209 [2022-01-18 13:23:30,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=2055, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:23:30,339 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 312 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:30,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2740 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-01-18 13:23:30,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1134. [2022-01-18 13:23:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 2.4783759929390996) internal successors, (2808), 1133 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2808 transitions. [2022-01-18 13:23:30,357 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2808 transitions. Word has length 79 [2022-01-18 13:23:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:30,357 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2808 transitions. [2022-01-18 13:23:30,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2808 transitions. [2022-01-18 13:23:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:30,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:30,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:30,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 13:23:30,359 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:30,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:30,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1909481314, now seen corresponding path program 8 times [2022-01-18 13:23:30,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:30,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085138465] [2022-01-18 13:23:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:30,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:30,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:30,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085138465] [2022-01-18 13:23:30,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085138465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:30,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:30,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:30,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143025149] [2022-01-18 13:23:30,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:30,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:30,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:30,698 INFO L87 Difference]: Start difference. First operand 1134 states and 2808 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:31,521 INFO L93 Difference]: Finished difference Result 1332 states and 3273 transitions. [2022-01-18 13:23:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:23:31,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:31,525 INFO L225 Difference]: With dead ends: 1332 [2022-01-18 13:23:31,526 INFO L226 Difference]: Without dead ends: 1162 [2022-01-18 13:23:31,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:23:31,526 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 302 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:31,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2526 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-18 13:23:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1122. [2022-01-18 13:23:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 2.4790365744870653) internal successors, (2779), 1121 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2779 transitions. [2022-01-18 13:23:31,542 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2779 transitions. Word has length 79 [2022-01-18 13:23:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:31,542 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2779 transitions. [2022-01-18 13:23:31,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2779 transitions. [2022-01-18 13:23:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:31,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:31,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:31,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 13:23:31,544 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1410763300, now seen corresponding path program 9 times [2022-01-18 13:23:31,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:31,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784026795] [2022-01-18 13:23:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:31,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:31,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:31,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784026795] [2022-01-18 13:23:31,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784026795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:31,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:31,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:23:31,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714968165] [2022-01-18 13:23:31,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:31,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:23:31,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:31,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:23:31,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:23:31,878 INFO L87 Difference]: Start difference. First operand 1122 states and 2779 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:33,097 INFO L93 Difference]: Finished difference Result 1386 states and 3409 transitions. [2022-01-18 13:23:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:23:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:33,101 INFO L225 Difference]: With dead ends: 1386 [2022-01-18 13:23:33,101 INFO L226 Difference]: Without dead ends: 1288 [2022-01-18 13:23:33,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2055, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:23:33,102 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 317 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:33,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2789 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:23:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-01-18 13:23:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1170. [2022-01-18 13:23:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 2.4833190761334474) internal successors, (2903), 1169 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-01-18 13:23:33,137 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-01-18 13:23:33,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:33,137 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-01-18 13:23:33,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-01-18 13:23:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:33,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:33,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:33,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 13:23:33,141 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1567671104, now seen corresponding path program 10 times [2022-01-18 13:23:33,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:33,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753143338] [2022-01-18 13:23:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:33,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:33,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:33,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753143338] [2022-01-18 13:23:33,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753143338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:33,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:33,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:23:33,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830327559] [2022-01-18 13:23:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:33,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:23:33,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:33,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:23:33,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:23:33,428 INFO L87 Difference]: Start difference. First operand 1170 states and 2903 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:34,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:34,479 INFO L93 Difference]: Finished difference Result 1354 states and 3321 transitions. [2022-01-18 13:23:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:23:34,479 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:34,483 INFO L225 Difference]: With dead ends: 1354 [2022-01-18 13:23:34,483 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 13:23:34,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:23:34,484 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 284 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:34,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2892 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 13:23:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1146. [2022-01-18 13:23:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.477729257641921) internal successors, (2837), 1145 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-01-18 13:23:34,501 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-01-18 13:23:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:34,501 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-01-18 13:23:34,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-01-18 13:23:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:34,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:34,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:34,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 13:23:34,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1359290628, now seen corresponding path program 11 times [2022-01-18 13:23:34,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:34,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544027147] [2022-01-18 13:23:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:34,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:34,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:34,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544027147] [2022-01-18 13:23:34,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544027147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:34,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:34,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:34,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117957764] [2022-01-18 13:23:34,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:34,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:34,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:34,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:34,799 INFO L87 Difference]: Start difference. First operand 1146 states and 2837 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:35,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:35,745 INFO L93 Difference]: Finished difference Result 1330 states and 3255 transitions. [2022-01-18 13:23:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:23:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:35,750 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 13:23:35,750 INFO L226 Difference]: Without dead ends: 1134 [2022-01-18 13:23:35,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:23:35,751 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 272 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:35,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2826 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-01-18 13:23:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1106. [2022-01-18 13:23:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 2.475113122171946) internal successors, (2735), 1105 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 2735 transitions. [2022-01-18 13:23:35,766 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 2735 transitions. Word has length 79 [2022-01-18 13:23:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:35,766 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 2735 transitions. [2022-01-18 13:23:35,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 2735 transitions. [2022-01-18 13:23:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:35,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:35,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:35,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 13:23:35,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash 713450852, now seen corresponding path program 12 times [2022-01-18 13:23:35,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:35,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440704711] [2022-01-18 13:23:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:35,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:36,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:36,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440704711] [2022-01-18 13:23:36,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440704711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:36,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:36,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:23:36,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813228584] [2022-01-18 13:23:36,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:36,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:23:36,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:23:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:23:36,097 INFO L87 Difference]: Start difference. First operand 1106 states and 2735 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:38,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:23:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:39,772 INFO L93 Difference]: Finished difference Result 1433 states and 3528 transitions. [2022-01-18 13:23:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:23:39,773 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:39,777 INFO L225 Difference]: With dead ends: 1433 [2022-01-18 13:23:39,777 INFO L226 Difference]: Without dead ends: 1335 [2022-01-18 13:23:39,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2839, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:23:39,778 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 343 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:39,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 3375 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1307 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 13:23:39,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2022-01-18 13:23:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1158. [2022-01-18 13:23:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4805531547104582) internal successors, (2870), 1157 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-01-18 13:23:39,798 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-01-18 13:23:39,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:39,798 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-01-18 13:23:39,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:39,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-01-18 13:23:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:39,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:39,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:39,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 13:23:39,800 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2029983744, now seen corresponding path program 13 times [2022-01-18 13:23:39,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:39,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852598524] [2022-01-18 13:23:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:39,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:40,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:40,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852598524] [2022-01-18 13:23:40,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852598524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:40,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:40,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:23:40,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900905134] [2022-01-18 13:23:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:40,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:23:40,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:23:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:23:40,149 INFO L87 Difference]: Start difference. First operand 1158 states and 2870 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:42,003 INFO L93 Difference]: Finished difference Result 1389 states and 3411 transitions. [2022-01-18 13:23:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:23:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:42,006 INFO L225 Difference]: With dead ends: 1389 [2022-01-18 13:23:42,007 INFO L226 Difference]: Without dead ends: 1254 [2022-01-18 13:23:42,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2734, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:23:42,007 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 331 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:42,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 3195 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 13:23:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-01-18 13:23:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1134. [2022-01-18 13:23:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 2.4748455428067078) internal successors, (2804), 1133 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-01-18 13:23:42,022 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-01-18 13:23:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:42,022 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-01-18 13:23:42,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-01-18 13:23:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:42,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:42,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:42,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 13:23:42,024 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:42,024 INFO L85 PathProgramCache]: Analyzing trace with hash 661978180, now seen corresponding path program 14 times [2022-01-18 13:23:42,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:42,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222309707] [2022-01-18 13:23:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:42,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:42,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:42,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222309707] [2022-01-18 13:23:42,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222309707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:42,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:42,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:23:42,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653918159] [2022-01-18 13:23:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:42,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:23:42,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:42,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:23:42,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:23:42,334 INFO L87 Difference]: Start difference. First operand 1134 states and 2804 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:43,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:43,301 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-01-18 13:23:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:23:43,301 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:43,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:43,304 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:23:43,304 INFO L226 Difference]: Without dead ends: 1173 [2022-01-18 13:23:43,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=2067, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:23:43,305 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 320 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:43,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2983 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:43,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-01-18 13:23:43,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1110. [2022-01-18 13:23:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 2.472497745716862) internal successors, (2742), 1109 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2742 transitions. [2022-01-18 13:23:43,319 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2742 transitions. Word has length 79 [2022-01-18 13:23:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:43,319 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2742 transitions. [2022-01-18 13:23:43,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2742 transitions. [2022-01-18 13:23:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:43,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:43,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:43,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 13:23:43,321 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:43,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1647496996, now seen corresponding path program 15 times [2022-01-18 13:23:43,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:43,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284541886] [2022-01-18 13:23:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:43,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:43,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:43,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284541886] [2022-01-18 13:23:43,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284541886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:43,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:43,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:43,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950759693] [2022-01-18 13:23:43,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:43,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:43,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:43,602 INFO L87 Difference]: Start difference. First operand 1110 states and 2742 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:44,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:44,404 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-01-18 13:23:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:23:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:44,407 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:23:44,407 INFO L226 Difference]: Without dead ends: 1126 [2022-01-18 13:23:44,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:23:44,411 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 328 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:44,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2474 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:23:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-01-18 13:23:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1098. [2022-01-18 13:23:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 2.4731084776663628) internal successors, (2713), 1097 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:44,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 2713 transitions. [2022-01-18 13:23:44,425 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 2713 transitions. Word has length 79 [2022-01-18 13:23:44,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:44,425 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 2713 transitions. [2022-01-18 13:23:44,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:44,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 2713 transitions. [2022-01-18 13:23:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:44,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:44,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:44,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 13:23:44,428 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash -179617636, now seen corresponding path program 16 times [2022-01-18 13:23:44,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:44,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921334868] [2022-01-18 13:23:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:44,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:44,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:44,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921334868] [2022-01-18 13:23:44,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921334868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:44,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:44,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:23:44,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879327613] [2022-01-18 13:23:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:44,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:23:44,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:44,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:23:44,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:23:44,737 INFO L87 Difference]: Start difference. First operand 1098 states and 2713 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:46,073 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-01-18 13:23:46,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:23:46,074 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:46,077 INFO L225 Difference]: With dead ends: 1419 [2022-01-18 13:23:46,077 INFO L226 Difference]: Without dead ends: 1321 [2022-01-18 13:23:46,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=2529, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:23:46,078 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 340 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:46,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 3108 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:23:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-01-18 13:23:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1170. [2022-01-18 13:23:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 2.4833190761334474) internal successors, (2903), 1169 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-01-18 13:23:46,092 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-01-18 13:23:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:46,093 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-01-18 13:23:46,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-01-18 13:23:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:46,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:46,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:46,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 13:23:46,094 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1136915256, now seen corresponding path program 17 times [2022-01-18 13:23:46,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:46,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549277740] [2022-01-18 13:23:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:46,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:46,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:46,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549277740] [2022-01-18 13:23:46,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549277740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:46,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:46,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:23:46,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826948452] [2022-01-18 13:23:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:46,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:23:46,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:46,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:23:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:23:46,401 INFO L87 Difference]: Start difference. First operand 1170 states and 2903 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:47,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:47,681 INFO L93 Difference]: Finished difference Result 1387 states and 3393 transitions. [2022-01-18 13:23:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:23:47,681 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:47,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:47,684 INFO L225 Difference]: With dead ends: 1387 [2022-01-18 13:23:47,684 INFO L226 Difference]: Without dead ends: 1252 [2022-01-18 13:23:47,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=2433, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:23:47,704 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 324 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:47,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 3078 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:23:47,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-01-18 13:23:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1146. [2022-01-18 13:23:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.477729257641921) internal successors, (2837), 1145 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-01-18 13:23:47,718 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-01-18 13:23:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:47,718 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-01-18 13:23:47,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-01-18 13:23:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:47,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:47,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:47,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 13:23:47,720 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash -231090308, now seen corresponding path program 18 times [2022-01-18 13:23:47,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:47,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047163166] [2022-01-18 13:23:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:47,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:47,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:47,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047163166] [2022-01-18 13:23:47,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047163166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:47,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:47,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:23:47,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328190828] [2022-01-18 13:23:47,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:47,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:23:47,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:23:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:23:47,997 INFO L87 Difference]: Start difference. First operand 1146 states and 2837 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:49,033 INFO L93 Difference]: Finished difference Result 1363 states and 3327 transitions. [2022-01-18 13:23:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:23:49,033 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:49,035 INFO L225 Difference]: With dead ends: 1363 [2022-01-18 13:23:49,035 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 13:23:49,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1978, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:23:49,036 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 310 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:49,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 3004 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:23:49,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 13:23:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1122. [2022-01-18 13:23:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 2.471900089206066) internal successors, (2771), 1121 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2771 transitions. [2022-01-18 13:23:49,049 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2771 transitions. Word has length 79 [2022-01-18 13:23:49,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:49,049 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2771 transitions. [2022-01-18 13:23:49,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2771 transitions. [2022-01-18 13:23:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:49,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:49,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:49,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 13:23:49,051 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash 959444536, now seen corresponding path program 19 times [2022-01-18 13:23:49,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:49,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548611253] [2022-01-18 13:23:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:49,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:49,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:49,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548611253] [2022-01-18 13:23:49,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548611253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:49,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:49,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:23:49,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024399658] [2022-01-18 13:23:49,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:49,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:23:49,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:23:49,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:23:49,310 INFO L87 Difference]: Start difference. First operand 1122 states and 2771 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:50,091 INFO L93 Difference]: Finished difference Result 1339 states and 3261 transitions. [2022-01-18 13:23:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:23:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:50,093 INFO L225 Difference]: With dead ends: 1339 [2022-01-18 13:23:50,093 INFO L226 Difference]: Without dead ends: 1098 [2022-01-18 13:23:50,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:23:50,094 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 312 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:50,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2616 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:23:50,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-18 13:23:50,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1082. [2022-01-18 13:23:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1081 states have (on average 2.469010175763182) internal successors, (2669), 1081 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:50,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 2669 transitions. [2022-01-18 13:23:50,106 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 2669 transitions. Word has length 79 [2022-01-18 13:23:50,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:50,106 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 2669 transitions. [2022-01-18 13:23:50,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:50,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 2669 transitions. [2022-01-18 13:23:50,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:50,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:50,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:50,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 13:23:50,108 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:50,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash 159266140, now seen corresponding path program 20 times [2022-01-18 13:23:50,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:50,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895056681] [2022-01-18 13:23:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:50,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:50,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:50,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895056681] [2022-01-18 13:23:50,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895056681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:50,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:50,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:23:50,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340744349] [2022-01-18 13:23:50,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:50,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:23:50,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:50,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:23:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:23:50,441 INFO L87 Difference]: Start difference. First operand 1082 states and 2669 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:53,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:23:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:53,745 INFO L93 Difference]: Finished difference Result 1463 states and 3598 transitions. [2022-01-18 13:23:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:23:53,746 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:53,748 INFO L225 Difference]: With dead ends: 1463 [2022-01-18 13:23:53,748 INFO L226 Difference]: Without dead ends: 1365 [2022-01-18 13:23:53,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=3504, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:23:53,749 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 370 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:53,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 3285 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:23:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-01-18 13:23:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1158. [2022-01-18 13:23:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.4805531547104582) internal successors, (2870), 1157 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-01-18 13:23:53,763 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-01-18 13:23:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:53,763 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-01-18 13:23:53,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-01-18 13:23:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:53,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:53,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:53,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 13:23:53,765 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1475799032, now seen corresponding path program 21 times [2022-01-18 13:23:53,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:53,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231370620] [2022-01-18 13:23:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:53,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:54,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231370620] [2022-01-18 13:23:54,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231370620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:54,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:54,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:23:54,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494536218] [2022-01-18 13:23:54,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:54,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:23:54,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:23:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:23:54,046 INFO L87 Difference]: Start difference. First operand 1158 states and 2870 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:57,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:23:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:57,521 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-01-18 13:23:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:23:57,521 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:57,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:57,523 INFO L225 Difference]: With dead ends: 1419 [2022-01-18 13:23:57,523 INFO L226 Difference]: Without dead ends: 1284 [2022-01-18 13:23:57,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=3399, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:23:57,524 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 390 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:57,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 3115 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1235 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 13:23:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-01-18 13:23:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1134. [2022-01-18 13:23:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 2.4748455428067078) internal successors, (2804), 1133 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:57,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-01-18 13:23:57,537 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-01-18 13:23:57,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:57,537 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-01-18 13:23:57,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:57,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-01-18 13:23:57,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:57,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:57,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:57,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 13:23:57,539 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:57,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:57,540 INFO L85 PathProgramCache]: Analyzing trace with hash 107793468, now seen corresponding path program 22 times [2022-01-18 13:23:57,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:57,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694928266] [2022-01-18 13:23:57,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:57,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:57,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:57,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694928266] [2022-01-18 13:23:57,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694928266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:57,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:57,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:23:57,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242071746] [2022-01-18 13:23:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:57,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:23:57,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:57,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:23:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:23:57,838 INFO L87 Difference]: Start difference. First operand 1134 states and 2804 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:23:59,289 INFO L93 Difference]: Finished difference Result 1383 states and 3382 transitions. [2022-01-18 13:23:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:23:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:23:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:23:59,291 INFO L225 Difference]: With dead ends: 1383 [2022-01-18 13:23:59,291 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 13:23:59,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=2639, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:23:59,292 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 345 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:23:59,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 3037 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:23:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 13:23:59,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1110. [2022-01-18 13:23:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 2.468890892696123) internal successors, (2738), 1109 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2738 transitions. [2022-01-18 13:23:59,304 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2738 transitions. Word has length 79 [2022-01-18 13:23:59,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:23:59,305 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2738 transitions. [2022-01-18 13:23:59,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:23:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2738 transitions. [2022-01-18 13:23:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:23:59,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:23:59,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:23:59,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 13:23:59,306 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:23:59,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:23:59,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1298328312, now seen corresponding path program 23 times [2022-01-18 13:23:59,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:23:59,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837652383] [2022-01-18 13:23:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:23:59,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:23:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:23:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:23:59,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:23:59,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837652383] [2022-01-18 13:23:59,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837652383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:23:59,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:23:59,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:23:59,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121752296] [2022-01-18 13:23:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:23:59,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:23:59,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:23:59,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:23:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:23:59,617 INFO L87 Difference]: Start difference. First operand 1110 states and 2738 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:00,626 INFO L93 Difference]: Finished difference Result 1347 states and 3283 transitions. [2022-01-18 13:24:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:24:00,626 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:00,628 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 13:24:00,628 INFO L226 Difference]: Without dead ends: 1122 [2022-01-18 13:24:00,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=1977, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:24:00,629 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 306 mSDsluCounter, 3144 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:00,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3106 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:24:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-18 13:24:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1086. [2022-01-18 13:24:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 2.466359447004608) internal successors, (2676), 1085 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2676 transitions. [2022-01-18 13:24:00,641 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2676 transitions. Word has length 79 [2022-01-18 13:24:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:00,641 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2676 transitions. [2022-01-18 13:24:00,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2676 transitions. [2022-01-18 13:24:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:00,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:00,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:00,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 13:24:00,643 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:00,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2146679560, now seen corresponding path program 24 times [2022-01-18 13:24:00,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:00,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994219793] [2022-01-18 13:24:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:00,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:00,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994219793] [2022-01-18 13:24:00,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994219793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:00,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:00,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:24:00,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89179366] [2022-01-18 13:24:00,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:00,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:24:00,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:24:00,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:24:00,968 INFO L87 Difference]: Start difference. First operand 1086 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:01,830 INFO L93 Difference]: Finished difference Result 1374 states and 3351 transitions. [2022-01-18 13:24:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:24:01,837 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:01,839 INFO L225 Difference]: With dead ends: 1374 [2022-01-18 13:24:01,839 INFO L226 Difference]: Without dead ends: 1090 [2022-01-18 13:24:01,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:24:01,840 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 301 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:01,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2892 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-01-18 13:24:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1074. [2022-01-18 13:24:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 2.466915191053122) internal successors, (2647), 1073 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2647 transitions. [2022-01-18 13:24:01,852 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2647 transitions. Word has length 79 [2022-01-18 13:24:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:01,852 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2647 transitions. [2022-01-18 13:24:01,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2647 transitions. [2022-01-18 13:24:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:01,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:01,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:01,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 13:24:01,854 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:01,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:01,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1699775516, now seen corresponding path program 25 times [2022-01-18 13:24:01,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:01,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581241016] [2022-01-18 13:24:01,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:01,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:02,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:02,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581241016] [2022-01-18 13:24:02,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581241016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:02,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:02,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:24:02,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974104489] [2022-01-18 13:24:02,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:02,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:24:02,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:24:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:24:02,183 INFO L87 Difference]: Start difference. First operand 1074 states and 2647 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:03,869 INFO L93 Difference]: Finished difference Result 1439 states and 3532 transitions. [2022-01-18 13:24:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:24:03,869 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:03,871 INFO L225 Difference]: With dead ends: 1439 [2022-01-18 13:24:03,871 INFO L226 Difference]: Without dead ends: 1341 [2022-01-18 13:24:03,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=3390, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:24:03,872 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 363 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 3488 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:03,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 3488 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:24:03,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-01-18 13:24:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1150. [2022-01-18 13:24:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 2.4786771105308962) internal successors, (2848), 1149 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 2848 transitions. [2022-01-18 13:24:03,885 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 2848 transitions. Word has length 79 [2022-01-18 13:24:03,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:03,885 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 2848 transitions. [2022-01-18 13:24:03,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:03,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 2848 transitions. [2022-01-18 13:24:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:03,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:03,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:03,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 13:24:03,887 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash -383242624, now seen corresponding path program 26 times [2022-01-18 13:24:03,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:03,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369777634] [2022-01-18 13:24:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:03,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:04,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:04,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369777634] [2022-01-18 13:24:04,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369777634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:04,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:04,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:24:04,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87640215] [2022-01-18 13:24:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:04,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:24:04,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:24:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:24:04,212 INFO L87 Difference]: Start difference. First operand 1150 states and 2848 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:05,803 INFO L93 Difference]: Finished difference Result 1395 states and 3415 transitions. [2022-01-18 13:24:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:24:05,804 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:05,806 INFO L225 Difference]: With dead ends: 1395 [2022-01-18 13:24:05,806 INFO L226 Difference]: Without dead ends: 1260 [2022-01-18 13:24:05,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=3278, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 13:24:05,807 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 397 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:05,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 3327 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:24:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-01-18 13:24:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1126. [2022-01-18 13:24:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1125 states have (on average 2.472888888888889) internal successors, (2782), 1125 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 2782 transitions. [2022-01-18 13:24:05,820 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 2782 transitions. Word has length 79 [2022-01-18 13:24:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:05,820 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 2782 transitions. [2022-01-18 13:24:05,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 2782 transitions. [2022-01-18 13:24:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:05,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:05,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:05,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 13:24:05,822 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:05,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1751248188, now seen corresponding path program 27 times [2022-01-18 13:24:05,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:05,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965908489] [2022-01-18 13:24:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:05,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:06,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:06,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965908489] [2022-01-18 13:24:06,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965908489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:06,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:06,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:06,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35303129] [2022-01-18 13:24:06,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:06,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:06,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:06,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:06,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:06,127 INFO L87 Difference]: Start difference. First operand 1126 states and 2782 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:07,392 INFO L93 Difference]: Finished difference Result 1359 states and 3316 transitions. [2022-01-18 13:24:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:24:07,392 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:07,394 INFO L225 Difference]: With dead ends: 1359 [2022-01-18 13:24:07,394 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 13:24:07,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=2541, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:24:07,395 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 354 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:07,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 3089 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:24:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 13:24:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1102. [2022-01-18 13:24:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 2.466848319709355) internal successors, (2716), 1101 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 2716 transitions. [2022-01-18 13:24:07,406 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 2716 transitions. Word has length 79 [2022-01-18 13:24:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:07,406 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 2716 transitions. [2022-01-18 13:24:07,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 2716 transitions. [2022-01-18 13:24:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:07,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:07,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:07,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 13:24:07,408 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash -560713344, now seen corresponding path program 28 times [2022-01-18 13:24:07,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:07,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885374109] [2022-01-18 13:24:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:07,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:07,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:07,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885374109] [2022-01-18 13:24:07,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885374109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:07,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:07,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:24:07,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108599423] [2022-01-18 13:24:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:07,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:24:07,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:24:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:24:07,741 INFO L87 Difference]: Start difference. First operand 1102 states and 2716 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:08,702 INFO L93 Difference]: Finished difference Result 1323 states and 3217 transitions. [2022-01-18 13:24:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:24:08,704 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:08,706 INFO L225 Difference]: With dead ends: 1323 [2022-01-18 13:24:08,706 INFO L226 Difference]: Without dead ends: 1098 [2022-01-18 13:24:08,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=1893, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:24:08,707 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 343 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:08,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2851 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-18 13:24:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1078. [2022-01-18 13:24:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 2.4642525533890436) internal successors, (2654), 1077 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2654 transitions. [2022-01-18 13:24:08,719 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2654 transitions. Word has length 79 [2022-01-18 13:24:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:08,720 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 2654 transitions. [2022-01-18 13:24:08,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2654 transitions. [2022-01-18 13:24:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:08,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:08,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:08,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 13:24:08,721 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash 287637904, now seen corresponding path program 29 times [2022-01-18 13:24:08,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:08,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371698317] [2022-01-18 13:24:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:08,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:09,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:09,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371698317] [2022-01-18 13:24:09,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371698317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:09,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:09,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:24:09,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647964145] [2022-01-18 13:24:09,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:09,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:24:09,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:24:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:24:09,093 INFO L87 Difference]: Start difference. First operand 1078 states and 2654 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:09,893 INFO L93 Difference]: Finished difference Result 1358 states and 3307 transitions. [2022-01-18 13:24:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:24:09,894 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:09,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:09,895 INFO L225 Difference]: With dead ends: 1358 [2022-01-18 13:24:09,895 INFO L226 Difference]: Without dead ends: 1082 [2022-01-18 13:24:09,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 13:24:09,896 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 342 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:09,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2728 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:09,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-01-18 13:24:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1074. [2022-01-18 13:24:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 2.463187325256291) internal successors, (2643), 1073 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2643 transitions. [2022-01-18 13:24:09,907 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2643 transitions. Word has length 79 [2022-01-18 13:24:09,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:09,907 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2643 transitions. [2022-01-18 13:24:09,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2643 transitions. [2022-01-18 13:24:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:09,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:09,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:09,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 13:24:09,909 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1141318424, now seen corresponding path program 30 times [2022-01-18 13:24:09,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:09,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051085123] [2022-01-18 13:24:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:09,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:10,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:10,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051085123] [2022-01-18 13:24:10,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051085123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:10,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:10,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:24:10,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005173647] [2022-01-18 13:24:10,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:10,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:24:10,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:10,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:24:10,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:24:10,208 INFO L87 Difference]: Start difference. First operand 1074 states and 2643 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:10,990 INFO L93 Difference]: Finished difference Result 1346 states and 3274 transitions. [2022-01-18 13:24:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 13:24:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:10,991 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 13:24:10,991 INFO L226 Difference]: Without dead ends: 1001 [2022-01-18 13:24:10,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=1345, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 13:24:10,992 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 354 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:10,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 2957 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-01-18 13:24:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2022-01-18 13:24:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 2.488) internal successors, (2488), 1000 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 2488 transitions. [2022-01-18 13:24:11,002 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 2488 transitions. Word has length 79 [2022-01-18 13:24:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:11,002 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 2488 transitions. [2022-01-18 13:24:11,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:11,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2488 transitions. [2022-01-18 13:24:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:11,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:11,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:11,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 13:24:11,003 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:11,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -364385472, now seen corresponding path program 31 times [2022-01-18 13:24:11,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:11,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282042812] [2022-01-18 13:24:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:11,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:11,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:11,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282042812] [2022-01-18 13:24:11,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282042812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:11,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:11,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:24:11,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924076479] [2022-01-18 13:24:11,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:11,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:24:11,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:11,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:24:11,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:24:11,368 INFO L87 Difference]: Start difference. First operand 1001 states and 2488 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:12,920 INFO L93 Difference]: Finished difference Result 1355 states and 3391 transitions. [2022-01-18 13:24:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 13:24:12,920 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:12,921 INFO L225 Difference]: With dead ends: 1355 [2022-01-18 13:24:12,921 INFO L226 Difference]: Without dead ends: 1225 [2022-01-18 13:24:12,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=293, Invalid=3613, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:24:12,922 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 399 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:12,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 2901 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:24:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-01-18 13:24:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1089. [2022-01-18 13:24:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 2.5018382352941178) internal successors, (2722), 1088 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2722 transitions. [2022-01-18 13:24:12,933 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2722 transitions. Word has length 79 [2022-01-18 13:24:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:12,933 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2722 transitions. [2022-01-18 13:24:12,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2722 transitions. [2022-01-18 13:24:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:12,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:12,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:12,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 13:24:12,935 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1217776638, now seen corresponding path program 32 times [2022-01-18 13:24:12,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:12,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401379979] [2022-01-18 13:24:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:12,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:13,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:13,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401379979] [2022-01-18 13:24:13,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401379979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:13,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:13,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:24:13,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286550824] [2022-01-18 13:24:13,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:13,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:24:13,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:13,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:24:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:24:13,259 INFO L87 Difference]: Start difference. First operand 1089 states and 2722 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:15,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:24:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:17,148 INFO L93 Difference]: Finished difference Result 1390 states and 3473 transitions. [2022-01-18 13:24:17,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 13:24:17,148 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:17,150 INFO L225 Difference]: With dead ends: 1390 [2022-01-18 13:24:17,150 INFO L226 Difference]: Without dead ends: 1292 [2022-01-18 13:24:17,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=3490, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:24:17,151 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 353 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:17,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 3012 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1223 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-01-18 13:24:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-01-18 13:24:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1129. [2022-01-18 13:24:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 2.5) internal successors, (2820), 1128 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 2820 transitions. [2022-01-18 13:24:17,163 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 2820 transitions. Word has length 79 [2022-01-18 13:24:17,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:17,164 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 2820 transitions. [2022-01-18 13:24:17,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 2820 transitions. [2022-01-18 13:24:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:17,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:17,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:17,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 13:24:17,165 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:17,166 INFO L85 PathProgramCache]: Analyzing trace with hash -503539360, now seen corresponding path program 33 times [2022-01-18 13:24:17,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:17,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100919723] [2022-01-18 13:24:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:17,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:17,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:17,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100919723] [2022-01-18 13:24:17,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100919723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:17,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:17,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:24:17,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846005598] [2022-01-18 13:24:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:17,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:24:17,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:24:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:24:17,493 INFO L87 Difference]: Start difference. First operand 1129 states and 2820 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:19,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:19,245 INFO L93 Difference]: Finished difference Result 1377 states and 3435 transitions. [2022-01-18 13:24:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:24:19,246 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:19,248 INFO L225 Difference]: With dead ends: 1377 [2022-01-18 13:24:19,248 INFO L226 Difference]: Without dead ends: 1264 [2022-01-18 13:24:19,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=292, Invalid=3490, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:24:19,249 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 400 mSDsluCounter, 3014 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:19,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 3068 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:24:19,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-01-18 13:24:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1121. [2022-01-18 13:24:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1120 states have (on average 2.494642857142857) internal successors, (2794), 1120 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 2794 transitions. [2022-01-18 13:24:19,260 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 2794 transitions. Word has length 79 [2022-01-18 13:24:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:19,261 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 2794 transitions. [2022-01-18 13:24:19,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 2794 transitions. [2022-01-18 13:24:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:19,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:19,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:19,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 13:24:19,262 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:19,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash -178091134, now seen corresponding path program 34 times [2022-01-18 13:24:19,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:19,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850011683] [2022-01-18 13:24:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:19,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:19,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850011683] [2022-01-18 13:24:19,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850011683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:19,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:19,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:24:19,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859505007] [2022-01-18 13:24:19,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:19,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:24:19,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:24:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:24:19,577 INFO L87 Difference]: Start difference. First operand 1121 states and 2794 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:21,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:21,004 INFO L93 Difference]: Finished difference Result 1383 states and 3440 transitions. [2022-01-18 13:24:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:24:21,004 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:21,006 INFO L225 Difference]: With dead ends: 1383 [2022-01-18 13:24:21,006 INFO L226 Difference]: Without dead ends: 1233 [2022-01-18 13:24:21,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=3384, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:24:21,007 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 338 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:21,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 3375 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:24:21,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-01-18 13:24:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1117. [2022-01-18 13:24:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.4937275985663083) internal successors, (2783), 1116 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2783 transitions. [2022-01-18 13:24:21,018 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2783 transitions. Word has length 79 [2022-01-18 13:24:21,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:21,018 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2783 transitions. [2022-01-18 13:24:21,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2783 transitions. [2022-01-18 13:24:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:21,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:21,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:21,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 13:24:21,020 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash 683491200, now seen corresponding path program 35 times [2022-01-18 13:24:21,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:21,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121445003] [2022-01-18 13:24:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:21,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:21,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:21,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121445003] [2022-01-18 13:24:21,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121445003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:21,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:21,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:21,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486174285] [2022-01-18 13:24:21,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:21,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:21,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:21,344 INFO L87 Difference]: Start difference. First operand 1117 states and 2783 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:23,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:24:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:24,388 INFO L93 Difference]: Finished difference Result 1372 states and 3407 transitions. [2022-01-18 13:24:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:24:24,388 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:24,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:24,390 INFO L225 Difference]: With dead ends: 1372 [2022-01-18 13:24:24,390 INFO L226 Difference]: Without dead ends: 1274 [2022-01-18 13:24:24,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:24:24,391 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 336 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:24,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2938 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-18 13:24:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-01-18 13:24:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1141. [2022-01-18 13:24:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 2.4921052631578946) internal successors, (2841), 1140 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 2841 transitions. [2022-01-18 13:24:24,401 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 2841 transitions. Word has length 79 [2022-01-18 13:24:24,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:24,402 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 2841 transitions. [2022-01-18 13:24:24,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 2841 transitions. [2022-01-18 13:24:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:24,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:24,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:24,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 13:24:24,403 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2000024092, now seen corresponding path program 36 times [2022-01-18 13:24:24,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:24,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265234743] [2022-01-18 13:24:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:24,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:24,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:24,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265234743] [2022-01-18 13:24:24,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265234743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:24,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:24,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:24,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427114404] [2022-01-18 13:24:24,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:24,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:24,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:24,715 INFO L87 Difference]: Start difference. First operand 1141 states and 2841 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:26,091 INFO L93 Difference]: Finished difference Result 1340 states and 3319 transitions. [2022-01-18 13:24:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:24:26,091 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:26,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:26,092 INFO L225 Difference]: With dead ends: 1340 [2022-01-18 13:24:26,092 INFO L226 Difference]: Without dead ends: 1181 [2022-01-18 13:24:26,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=2825, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:24:26,093 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 335 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:26,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 2767 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:24:26,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-01-18 13:24:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1093. [2022-01-18 13:24:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.4844322344322345) internal successors, (2713), 1092 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2713 transitions. [2022-01-18 13:24:26,104 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2713 transitions. Word has length 79 [2022-01-18 13:24:26,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:26,104 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2713 transitions. [2022-01-18 13:24:26,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2713 transitions. [2022-01-18 13:24:26,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:26,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:26,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:26,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 13:24:26,106 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1725629730, now seen corresponding path program 37 times [2022-01-18 13:24:26,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:26,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643505866] [2022-01-18 13:24:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:26,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:26,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643505866] [2022-01-18 13:24:26,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643505866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:26,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:26,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:26,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242488466] [2022-01-18 13:24:26,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:26,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:26,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:26,439 INFO L87 Difference]: Start difference. First operand 1093 states and 2713 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:28,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:24:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:30,278 INFO L93 Difference]: Finished difference Result 1327 states and 3290 transitions. [2022-01-18 13:24:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:24:30,279 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:30,280 INFO L225 Difference]: With dead ends: 1327 [2022-01-18 13:24:30,280 INFO L226 Difference]: Without dead ends: 1213 [2022-01-18 13:24:30,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=246, Invalid=2724, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:24:30,281 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 352 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:30,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2618 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1065 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-01-18 13:24:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2022-01-18 13:24:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1117. [2022-01-18 13:24:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.486559139784946) internal successors, (2775), 1116 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2775 transitions. [2022-01-18 13:24:30,291 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2775 transitions. Word has length 79 [2022-01-18 13:24:30,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:30,292 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2775 transitions. [2022-01-18 13:24:30,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2775 transitions. [2022-01-18 13:24:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:30,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:30,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:30,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 13:24:30,293 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1358735300, now seen corresponding path program 38 times [2022-01-18 13:24:30,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:30,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254831538] [2022-01-18 13:24:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:30,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:30,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:30,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254831538] [2022-01-18 13:24:30,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254831538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:30,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:30,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:30,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506196066] [2022-01-18 13:24:30,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:30,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:30,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:30,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:30,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:30,588 INFO L87 Difference]: Start difference. First operand 1117 states and 2775 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:32,095 INFO L93 Difference]: Finished difference Result 1338 states and 3314 transitions. [2022-01-18 13:24:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:24:32,095 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:32,097 INFO L225 Difference]: With dead ends: 1338 [2022-01-18 13:24:32,097 INFO L226 Difference]: Without dead ends: 1212 [2022-01-18 13:24:32,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=2928, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:24:32,098 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 319 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:32,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2944 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:24:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-01-18 13:24:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1081. [2022-01-18 13:24:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4925925925925925) internal successors, (2692), 1080 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2692 transitions. [2022-01-18 13:24:32,110 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2692 transitions. Word has length 79 [2022-01-18 13:24:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:32,110 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2692 transitions. [2022-01-18 13:24:32,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2692 transitions. [2022-01-18 13:24:32,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:32,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:32,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:32,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 13:24:32,112 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:32,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2072972578, now seen corresponding path program 39 times [2022-01-18 13:24:32,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:32,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024936222] [2022-01-18 13:24:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:32,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:32,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024936222] [2022-01-18 13:24:32,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024936222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:32,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:32,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:32,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277177682] [2022-01-18 13:24:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:32,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:32,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:32,460 INFO L87 Difference]: Start difference. First operand 1081 states and 2692 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:35,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:24:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:35,889 INFO L93 Difference]: Finished difference Result 1306 states and 3238 transitions. [2022-01-18 13:24:35,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:24:35,889 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:35,891 INFO L225 Difference]: With dead ends: 1306 [2022-01-18 13:24:35,891 INFO L226 Difference]: Without dead ends: 1197 [2022-01-18 13:24:35,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:24:35,892 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 357 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:35,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2623 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1058 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 13:24:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-01-18 13:24:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1113. [2022-01-18 13:24:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 2.4928057553956835) internal successors, (2772), 1112 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 2772 transitions. [2022-01-18 13:24:35,902 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 2772 transitions. Word has length 79 [2022-01-18 13:24:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:35,903 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 2772 transitions. [2022-01-18 13:24:35,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 2772 transitions. [2022-01-18 13:24:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:35,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:35,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:35,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 13:24:35,904 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1751303904, now seen corresponding path program 40 times [2022-01-18 13:24:35,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:35,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490408554] [2022-01-18 13:24:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:35,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:36,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:36,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490408554] [2022-01-18 13:24:36,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490408554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:36,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:36,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:36,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996295850] [2022-01-18 13:24:36,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:36,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:36,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:36,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:36,203 INFO L87 Difference]: Start difference. First operand 1113 states and 2772 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:39,042 INFO L93 Difference]: Finished difference Result 1364 states and 3385 transitions. [2022-01-18 13:24:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:24:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:39,044 INFO L225 Difference]: With dead ends: 1364 [2022-01-18 13:24:39,044 INFO L226 Difference]: Without dead ends: 1266 [2022-01-18 13:24:39,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:24:39,045 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 350 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:39,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2891 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 13:24:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-01-18 13:24:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1137. [2022-01-18 13:24:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 2.4911971830985915) internal successors, (2830), 1136 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 2830 transitions. [2022-01-18 13:24:39,056 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 2830 transitions. Word has length 79 [2022-01-18 13:24:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:39,057 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 2830 transitions. [2022-01-18 13:24:39,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 2830 transitions. [2022-01-18 13:24:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:39,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:39,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:39,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 13:24:39,058 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash -434771012, now seen corresponding path program 41 times [2022-01-18 13:24:39,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:39,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188588015] [2022-01-18 13:24:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:39,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:39,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:39,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188588015] [2022-01-18 13:24:39,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188588015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:39,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:39,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:39,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317357997] [2022-01-18 13:24:39,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:39,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:39,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:39,383 INFO L87 Difference]: Start difference. First operand 1137 states and 2830 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:40,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:40,602 INFO L93 Difference]: Finished difference Result 1347 states and 3332 transitions. [2022-01-18 13:24:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:24:40,603 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:40,604 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 13:24:40,604 INFO L226 Difference]: Without dead ends: 1204 [2022-01-18 13:24:40,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=257, Invalid=2823, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:24:40,605 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 349 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:40,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2730 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:24:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-01-18 13:24:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1105. [2022-01-18 13:24:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.483695652173913) internal successors, (2742), 1104 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2742 transitions. [2022-01-18 13:24:40,616 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2742 transitions. Word has length 79 [2022-01-18 13:24:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:40,616 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2742 transitions. [2022-01-18 13:24:40,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2742 transitions. [2022-01-18 13:24:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:40,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:40,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:40,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 13:24:40,618 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash -917420034, now seen corresponding path program 42 times [2022-01-18 13:24:40,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:40,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754026357] [2022-01-18 13:24:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:40,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:40,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:40,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754026357] [2022-01-18 13:24:40,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754026357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:40,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:40,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:24:40,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942312847] [2022-01-18 13:24:40,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:40,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:24:40,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:24:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:24:40,939 INFO L87 Difference]: Start difference. First operand 1105 states and 2742 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:43,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:43,112 INFO L93 Difference]: Finished difference Result 1407 states and 3485 transitions. [2022-01-18 13:24:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:24:43,112 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:43,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:43,114 INFO L225 Difference]: With dead ends: 1407 [2022-01-18 13:24:43,114 INFO L226 Difference]: Without dead ends: 1309 [2022-01-18 13:24:43,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=296, Invalid=3610, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:24:43,115 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 380 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:43,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 3098 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 13:24:43,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-01-18 13:24:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1133. [2022-01-18 13:24:43,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1132 states have (on average 2.48321554770318) internal successors, (2811), 1132 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:43,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 2811 transitions. [2022-01-18 13:24:43,133 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 2811 transitions. Word has length 79 [2022-01-18 13:24:43,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:43,133 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 2811 transitions. [2022-01-18 13:24:43,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 2811 transitions. [2022-01-18 13:24:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:43,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:43,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:43,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 13:24:43,135 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash 399112858, now seen corresponding path program 43 times [2022-01-18 13:24:43,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:43,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169657240] [2022-01-18 13:24:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:43,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:43,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:43,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169657240] [2022-01-18 13:24:43,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169657240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:43,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:43,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:24:43,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711447479] [2022-01-18 13:24:43,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:43,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:24:43,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:43,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:24:43,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:24:43,454 INFO L87 Difference]: Start difference. First operand 1133 states and 2811 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:45,016 INFO L93 Difference]: Finished difference Result 1378 states and 3403 transitions. [2022-01-18 13:24:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:24:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:45,018 INFO L225 Difference]: With dead ends: 1378 [2022-01-18 13:24:45,018 INFO L226 Difference]: Without dead ends: 1243 [2022-01-18 13:24:45,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=288, Invalid=3494, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:24:45,019 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 344 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 3510 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:45,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 3510 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:24:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-01-18 13:24:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1109. [2022-01-18 13:24:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1108 states have (on average 2.4810469314079424) internal successors, (2749), 1108 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 2749 transitions. [2022-01-18 13:24:45,030 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 2749 transitions. Word has length 79 [2022-01-18 13:24:45,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:45,030 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 2749 transitions. [2022-01-18 13:24:45,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 2749 transitions. [2022-01-18 13:24:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:45,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:45,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:45,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 13:24:45,032 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash -731402172, now seen corresponding path program 44 times [2022-01-18 13:24:45,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:45,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067336634] [2022-01-18 13:24:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:45,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:45,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:45,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067336634] [2022-01-18 13:24:45,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067336634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:45,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:45,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:45,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554401724] [2022-01-18 13:24:45,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:45,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:45,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:45,330 INFO L87 Difference]: Start difference. First operand 1109 states and 2749 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:46,718 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-01-18 13:24:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:24:46,718 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:46,720 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 13:24:46,720 INFO L226 Difference]: Without dead ends: 1173 [2022-01-18 13:24:46,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=2835, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:24:46,720 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 376 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:46,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2803 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:24:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-01-18 13:24:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1093. [2022-01-18 13:24:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.477106227106227) internal successors, (2705), 1092 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2705 transitions. [2022-01-18 13:24:46,730 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2705 transitions. Word has length 79 [2022-01-18 13:24:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:46,731 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2705 transitions. [2022-01-18 13:24:46,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2705 transitions. [2022-01-18 13:24:46,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:46,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:46,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:46,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-18 13:24:46,732 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:46,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1689438564, now seen corresponding path program 45 times [2022-01-18 13:24:46,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:46,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320973624] [2022-01-18 13:24:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:46,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:47,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:47,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320973624] [2022-01-18 13:24:47,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320973624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:47,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:47,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:47,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598168154] [2022-01-18 13:24:47,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:47,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:47,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:47,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:47,096 INFO L87 Difference]: Start difference. First operand 1093 states and 2705 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:49,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:49,236 INFO L93 Difference]: Finished difference Result 1381 states and 3401 transitions. [2022-01-18 13:24:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:24:49,236 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:49,238 INFO L225 Difference]: With dead ends: 1381 [2022-01-18 13:24:49,238 INFO L226 Difference]: Without dead ends: 1283 [2022-01-18 13:24:49,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=2936, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:24:49,239 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 331 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:49,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2991 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:24:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-01-18 13:24:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1141. [2022-01-18 13:24:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 2.481578947368421) internal successors, (2829), 1140 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 2829 transitions. [2022-01-18 13:24:49,250 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 2829 transitions. Word has length 79 [2022-01-18 13:24:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:49,250 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 2829 transitions. [2022-01-18 13:24:49,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 2829 transitions. [2022-01-18 13:24:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:49,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:49,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:49,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 13:24:49,252 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1288995840, now seen corresponding path program 46 times [2022-01-18 13:24:49,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431605669] [2022-01-18 13:24:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:49,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:49,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:49,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431605669] [2022-01-18 13:24:49,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431605669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:49,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:49,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:49,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991202201] [2022-01-18 13:24:49,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:49,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:49,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:49,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:49,540 INFO L87 Difference]: Start difference. First operand 1141 states and 2829 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:50,978 INFO L93 Difference]: Finished difference Result 1349 states and 3313 transitions. [2022-01-18 13:24:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:24:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:50,980 INFO L225 Difference]: With dead ends: 1349 [2022-01-18 13:24:50,980 INFO L226 Difference]: Without dead ends: 1214 [2022-01-18 13:24:50,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:24:50,981 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 347 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:50,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2810 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:24:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-01-18 13:24:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1117. [2022-01-18 13:24:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.475806451612903) internal successors, (2763), 1116 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2763 transitions. [2022-01-18 13:24:50,993 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2763 transitions. Word has length 79 [2022-01-18 13:24:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:50,993 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2763 transitions. [2022-01-18 13:24:50,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:50,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2763 transitions. [2022-01-18 13:24:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:50,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:50,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:50,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-18 13:24:50,995 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:50,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1637965892, now seen corresponding path program 47 times [2022-01-18 13:24:50,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:50,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755145802] [2022-01-18 13:24:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:50,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:51,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:51,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755145802] [2022-01-18 13:24:51,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755145802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:51,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:51,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:24:51,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079389741] [2022-01-18 13:24:51,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:51,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:24:51,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:51,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:24:51,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:24:51,265 INFO L87 Difference]: Start difference. First operand 1117 states and 2763 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:52,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:52,304 INFO L93 Difference]: Finished difference Result 1325 states and 3247 transitions. [2022-01-18 13:24:52,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:24:52,304 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:52,316 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 13:24:52,316 INFO L226 Difference]: Without dead ends: 1121 [2022-01-18 13:24:52,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:24:52,317 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 301 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:52,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2856 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-01-18 13:24:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1069. [2022-01-18 13:24:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.4709737827715355) internal successors, (2639), 1068 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2639 transitions. [2022-01-18 13:24:52,328 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2639 transitions. Word has length 79 [2022-01-18 13:24:52,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:52,328 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2639 transitions. [2022-01-18 13:24:52,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:52,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2639 transitions. [2022-01-18 13:24:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:52,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:52,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:52,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-18 13:24:52,329 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash 902399910, now seen corresponding path program 48 times [2022-01-18 13:24:52,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:52,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393673838] [2022-01-18 13:24:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:52,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:52,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:52,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393673838] [2022-01-18 13:24:52,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393673838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:52,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:52,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:24:52,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025714683] [2022-01-18 13:24:52,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:52,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:24:52,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:24:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:24:52,668 INFO L87 Difference]: Start difference. First operand 1069 states and 2639 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:53,700 INFO L93 Difference]: Finished difference Result 1297 states and 3199 transitions. [2022-01-18 13:24:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:24:53,700 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:53,701 INFO L225 Difference]: With dead ends: 1297 [2022-01-18 13:24:53,701 INFO L226 Difference]: Without dead ends: 1156 [2022-01-18 13:24:53,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=2330, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:24:53,702 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 329 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:53,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2497 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-01-18 13:24:53,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1069. [2022-01-18 13:24:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.493445692883895) internal successors, (2663), 1068 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2663 transitions. [2022-01-18 13:24:53,713 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2663 transitions. Word has length 79 [2022-01-18 13:24:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:53,713 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2663 transitions. [2022-01-18 13:24:53,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2663 transitions. [2022-01-18 13:24:53,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:53,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:53,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:53,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-18 13:24:53,715 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1342003044, now seen corresponding path program 49 times [2022-01-18 13:24:53,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:53,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651672749] [2022-01-18 13:24:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:53,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:54,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:54,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651672749] [2022-01-18 13:24:54,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651672749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:54,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:54,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:24:54,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693263465] [2022-01-18 13:24:54,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:54,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:24:54,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:24:54,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:24:54,004 INFO L87 Difference]: Start difference. First operand 1069 states and 2663 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:54,992 INFO L93 Difference]: Finished difference Result 1255 states and 3108 transitions. [2022-01-18 13:24:54,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:24:54,992 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:54,994 INFO L225 Difference]: With dead ends: 1255 [2022-01-18 13:24:54,994 INFO L226 Difference]: Without dead ends: 1141 [2022-01-18 13:24:54,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=1972, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:24:54,995 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 263 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:54,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2572 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-01-18 13:24:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1069. [2022-01-18 13:24:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.4897003745318353) internal successors, (2659), 1068 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2659 transitions. [2022-01-18 13:24:55,006 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2659 transitions. Word has length 79 [2022-01-18 13:24:55,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:55,006 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2659 transitions. [2022-01-18 13:24:55,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2659 transitions. [2022-01-18 13:24:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:55,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:55,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:55,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-18 13:24:55,008 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1708897474, now seen corresponding path program 50 times [2022-01-18 13:24:55,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:55,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173834628] [2022-01-18 13:24:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:55,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:55,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:55,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173834628] [2022-01-18 13:24:55,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173834628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:55,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:55,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:24:55,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810041760] [2022-01-18 13:24:55,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:55,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:24:55,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:24:55,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:24:55,290 INFO L87 Difference]: Start difference. First operand 1069 states and 2659 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:56,221 INFO L93 Difference]: Finished difference Result 1227 states and 3035 transitions. [2022-01-18 13:24:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:24:56,221 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:56,223 INFO L225 Difference]: With dead ends: 1227 [2022-01-18 13:24:56,223 INFO L226 Difference]: Without dead ends: 1121 [2022-01-18 13:24:56,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:24:56,223 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 277 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:56,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2425 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:24:56,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-01-18 13:24:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1061. [2022-01-18 13:24:56,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 2.491509433962264) internal successors, (2641), 1060 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 2641 transitions. [2022-01-18 13:24:56,239 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 2641 transitions. Word has length 79 [2022-01-18 13:24:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:56,239 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 2641 transitions. [2022-01-18 13:24:56,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 2641 transitions. [2022-01-18 13:24:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:56,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:56,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:56,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 13:24:56,241 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:56,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:56,241 INFO L85 PathProgramCache]: Analyzing trace with hash -523969382, now seen corresponding path program 51 times [2022-01-18 13:24:56,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:56,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597079420] [2022-01-18 13:24:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:56,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:56,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:56,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597079420] [2022-01-18 13:24:56,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597079420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:56,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:56,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:24:56,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753102717] [2022-01-18 13:24:56,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:56,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:24:56,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:56,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:24:56,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:24:56,556 INFO L87 Difference]: Start difference. First operand 1061 states and 2641 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:57,642 INFO L93 Difference]: Finished difference Result 1284 states and 3177 transitions. [2022-01-18 13:24:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:24:57,643 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:57,644 INFO L225 Difference]: With dead ends: 1284 [2022-01-18 13:24:57,644 INFO L226 Difference]: Without dead ends: 1186 [2022-01-18 13:24:57,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:24:57,645 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 312 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:57,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2472 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:24:57,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-18 13:24:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-01-18 13:24:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1084 states have (on average 2.4898523985239853) internal successors, (2699), 1084 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 2699 transitions. [2022-01-18 13:24:57,655 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 2699 transitions. Word has length 79 [2022-01-18 13:24:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:57,656 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 2699 transitions. [2022-01-18 13:24:57,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 2699 transitions. [2022-01-18 13:24:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:57,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:57,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:57,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-18 13:24:57,657 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:57,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash 792563510, now seen corresponding path program 52 times [2022-01-18 13:24:57,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:57,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588223172] [2022-01-18 13:24:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:57,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:57,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:57,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588223172] [2022-01-18 13:24:57,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588223172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:57,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:57,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:24:57,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555661655] [2022-01-18 13:24:57,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:57,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:24:57,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:57,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:24:57,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:24:57,939 INFO L87 Difference]: Start difference. First operand 1085 states and 2699 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:24:59,038 INFO L93 Difference]: Finished difference Result 1252 states and 3089 transitions. [2022-01-18 13:24:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:24:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:24:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:24:59,040 INFO L225 Difference]: With dead ends: 1252 [2022-01-18 13:24:59,040 INFO L226 Difference]: Without dead ends: 1109 [2022-01-18 13:24:59,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:24:59,041 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 293 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:24:59,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2576 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:24:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-01-18 13:24:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1053. [2022-01-18 13:24:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4895437262357416) internal successors, (2619), 1052 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2619 transitions. [2022-01-18 13:24:59,052 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2619 transitions. Word has length 79 [2022-01-18 13:24:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:24:59,053 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2619 transitions. [2022-01-18 13:24:59,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:24:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2619 transitions. [2022-01-18 13:24:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:24:59,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:24:59,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:24:59,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-18 13:24:59,054 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:24:59,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:24:59,055 INFO L85 PathProgramCache]: Analyzing trace with hash 309914488, now seen corresponding path program 53 times [2022-01-18 13:24:59,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:24:59,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751311398] [2022-01-18 13:24:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:24:59,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:24:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:24:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:24:59,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:24:59,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751311398] [2022-01-18 13:24:59,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751311398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:24:59,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:24:59,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:24:59,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490666077] [2022-01-18 13:24:59,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:24:59,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:24:59,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:24:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:24:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:24:59,376 INFO L87 Difference]: Start difference. First operand 1053 states and 2619 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:00,576 INFO L93 Difference]: Finished difference Result 1327 states and 3285 transitions. [2022-01-18 13:25:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:25:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:00,578 INFO L225 Difference]: With dead ends: 1327 [2022-01-18 13:25:00,578 INFO L226 Difference]: Without dead ends: 1229 [2022-01-18 13:25:00,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2831, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:25:00,579 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 327 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:00,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 2884 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-01-18 13:25:00,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1081. [2022-01-18 13:25:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.488888888888889) internal successors, (2688), 1080 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2688 transitions. [2022-01-18 13:25:00,592 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2688 transitions. Word has length 79 [2022-01-18 13:25:00,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:00,593 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2688 transitions. [2022-01-18 13:25:00,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2688 transitions. [2022-01-18 13:25:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:00,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:00,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:00,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 13:25:00,595 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:00,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1626447380, now seen corresponding path program 54 times [2022-01-18 13:25:00,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:00,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146306963] [2022-01-18 13:25:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:00,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:00,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:00,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146306963] [2022-01-18 13:25:00,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146306963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:00,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:00,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:00,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106335800] [2022-01-18 13:25:00,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:00,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:00,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:00,945 INFO L87 Difference]: Start difference. First operand 1081 states and 2688 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:02,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:02,154 INFO L93 Difference]: Finished difference Result 1283 states and 3168 transitions. [2022-01-18 13:25:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:25:02,154 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:02,155 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 13:25:02,156 INFO L226 Difference]: Without dead ends: 1148 [2022-01-18 13:25:02,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:25:02,156 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 311 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:02,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2999 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-01-18 13:25:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1057. [2022-01-18 13:25:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 2.4867424242424243) internal successors, (2626), 1056 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2626 transitions. [2022-01-18 13:25:02,166 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2626 transitions. Word has length 79 [2022-01-18 13:25:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:02,166 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2626 transitions. [2022-01-18 13:25:02,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2626 transitions. [2022-01-18 13:25:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:02,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:02,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:02,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-18 13:25:02,168 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash 495932350, now seen corresponding path program 55 times [2022-01-18 13:25:02,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:02,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802935255] [2022-01-18 13:25:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:02,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:02,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:02,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802935255] [2022-01-18 13:25:02,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802935255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:02,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:02,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:02,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295094920] [2022-01-18 13:25:02,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:02,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:02,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:02,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:02,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:02,462 INFO L87 Difference]: Start difference. First operand 1057 states and 2626 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:03,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:03,460 INFO L93 Difference]: Finished difference Result 1271 states and 3135 transitions. [2022-01-18 13:25:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:25:03,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:03,461 INFO L225 Difference]: With dead ends: 1271 [2022-01-18 13:25:03,461 INFO L226 Difference]: Without dead ends: 1105 [2022-01-18 13:25:03,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:25:03,462 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 318 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:03,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2661 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-01-18 13:25:03,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1049. [2022-01-18 13:25:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1048 states have (on average 2.4885496183206106) internal successors, (2608), 1048 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 2608 transitions. [2022-01-18 13:25:03,471 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 2608 transitions. Word has length 79 [2022-01-18 13:25:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:03,471 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 2608 transitions. [2022-01-18 13:25:03,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 2608 transitions. [2022-01-18 13:25:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:03,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:03,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:03,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-18 13:25:03,473 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:03,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:03,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1336687230, now seen corresponding path program 56 times [2022-01-18 13:25:03,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:03,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669142369] [2022-01-18 13:25:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:03,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:03,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:03,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669142369] [2022-01-18 13:25:03,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669142369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:03,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:03,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:03,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157246451] [2022-01-18 13:25:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:03,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:03,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:03,776 INFO L87 Difference]: Start difference. First operand 1049 states and 2608 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:05,041 INFO L93 Difference]: Finished difference Result 1329 states and 3282 transitions. [2022-01-18 13:25:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:25:05,042 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:05,043 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 13:25:05,043 INFO L226 Difference]: Without dead ends: 1231 [2022-01-18 13:25:05,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:25:05,044 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 318 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:05,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2792 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:05,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-01-18 13:25:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1097. [2022-01-18 13:25:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 2.4927007299270074) internal successors, (2732), 1096 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2732 transitions. [2022-01-18 13:25:05,054 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2732 transitions. Word has length 79 [2022-01-18 13:25:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:05,054 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2732 transitions. [2022-01-18 13:25:05,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2732 transitions. [2022-01-18 13:25:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:05,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:05,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:05,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-18 13:25:05,055 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:05,056 INFO L85 PathProgramCache]: Analyzing trace with hash -20154338, now seen corresponding path program 57 times [2022-01-18 13:25:05,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:05,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267022708] [2022-01-18 13:25:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:05,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:05,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:05,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267022708] [2022-01-18 13:25:05,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267022708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:05,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:05,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:05,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185509620] [2022-01-18 13:25:05,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:05,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:05,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:05,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:05,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:05,339 INFO L87 Difference]: Start difference. First operand 1097 states and 2732 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:06,526 INFO L93 Difference]: Finished difference Result 1297 states and 3194 transitions. [2022-01-18 13:25:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:25:06,526 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:06,528 INFO L225 Difference]: With dead ends: 1297 [2022-01-18 13:25:06,528 INFO L226 Difference]: Without dead ends: 1162 [2022-01-18 13:25:06,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=2629, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:25:06,529 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 317 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:06,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2758 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-18 13:25:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1073. [2022-01-18 13:25:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 2.486940298507463) internal successors, (2666), 1072 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2666 transitions. [2022-01-18 13:25:06,539 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2666 transitions. Word has length 79 [2022-01-18 13:25:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:06,539 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2666 transitions. [2022-01-18 13:25:06,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:06,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2666 transitions. [2022-01-18 13:25:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:06,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:06,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:06,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-18 13:25:06,540 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1388159902, now seen corresponding path program 58 times [2022-01-18 13:25:06,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:06,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470713331] [2022-01-18 13:25:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:06,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:06,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:06,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:06,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470713331] [2022-01-18 13:25:06,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470713331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:06,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:06,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:06,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562075134] [2022-01-18 13:25:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:06,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:06,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:06,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:06,798 INFO L87 Difference]: Start difference. First operand 1073 states and 2666 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:07,752 INFO L93 Difference]: Finished difference Result 1273 states and 3128 transitions. [2022-01-18 13:25:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:25:07,752 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:07,753 INFO L225 Difference]: With dead ends: 1273 [2022-01-18 13:25:07,753 INFO L226 Difference]: Without dead ends: 1085 [2022-01-18 13:25:07,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:25:07,754 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 303 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:07,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2831 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-01-18 13:25:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-01-18 13:25:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 2.4865384615384616) internal successors, (2586), 1040 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2586 transitions. [2022-01-18 13:25:07,764 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2586 transitions. Word has length 79 [2022-01-18 13:25:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:07,764 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2586 transitions. [2022-01-18 13:25:07,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2586 transitions. [2022-01-18 13:25:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:07,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:07,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:07,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-18 13:25:07,765 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:07,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1998693084, now seen corresponding path program 59 times [2022-01-18 13:25:07,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:07,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125890963] [2022-01-18 13:25:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:07,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:08,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:08,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125890963] [2022-01-18 13:25:08,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125890963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:08,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:08,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:25:08,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395129981] [2022-01-18 13:25:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:08,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:25:08,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:25:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:25:08,092 INFO L87 Difference]: Start difference. First operand 1041 states and 2586 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:09,554 INFO L93 Difference]: Finished difference Result 1369 states and 3388 transitions. [2022-01-18 13:25:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:25:09,555 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:09,556 INFO L225 Difference]: With dead ends: 1369 [2022-01-18 13:25:09,556 INFO L226 Difference]: Without dead ends: 1271 [2022-01-18 13:25:09,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=3502, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:25:09,557 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 355 mSDsluCounter, 3237 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:09,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 3264 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:09,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-01-18 13:25:09,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1093. [2022-01-18 13:25:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.491758241758242) internal successors, (2721), 1092 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-01-18 13:25:09,567 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-01-18 13:25:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:09,567 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-01-18 13:25:09,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-01-18 13:25:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:09,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:09,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:09,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-18 13:25:09,569 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:09,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash -682160192, now seen corresponding path program 60 times [2022-01-18 13:25:09,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:09,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6664177] [2022-01-18 13:25:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:09,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:09,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:09,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6664177] [2022-01-18 13:25:09,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6664177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:09,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:09,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:25:09,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617889628] [2022-01-18 13:25:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:09,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:25:09,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:09,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:25:09,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:25:09,875 INFO L87 Difference]: Start difference. First operand 1093 states and 2721 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:11,217 INFO L93 Difference]: Finished difference Result 1325 states and 3271 transitions. [2022-01-18 13:25:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:25:11,218 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:11,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:11,219 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 13:25:11,219 INFO L226 Difference]: Without dead ends: 1190 [2022-01-18 13:25:11,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=3388, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:25:11,219 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 341 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:11,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3233 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-01-18 13:25:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1069. [2022-01-18 13:25:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.485955056179775) internal successors, (2655), 1068 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-01-18 13:25:11,229 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-01-18 13:25:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:11,229 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-01-18 13:25:11,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-01-18 13:25:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:11,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:11,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:11,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-18 13:25:11,230 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:11,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2050165756, now seen corresponding path program 61 times [2022-01-18 13:25:11,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486067064] [2022-01-18 13:25:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:11,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:11,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:11,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486067064] [2022-01-18 13:25:11,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486067064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:11,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:11,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:11,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774545495] [2022-01-18 13:25:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:11,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:11,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:11,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:11,524 INFO L87 Difference]: Start difference. First operand 1069 states and 2655 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:12,622 INFO L93 Difference]: Finished difference Result 1289 states and 3172 transitions. [2022-01-18 13:25:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:25:12,622 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:12,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:12,624 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 13:25:12,624 INFO L226 Difference]: Without dead ends: 1109 [2022-01-18 13:25:12,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=2637, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:25:12,624 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 344 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:12,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2873 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-01-18 13:25:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1045. [2022-01-18 13:25:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 2.4837164750957856) internal successors, (2593), 1044 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2593 transitions. [2022-01-18 13:25:12,634 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2593 transitions. Word has length 79 [2022-01-18 13:25:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:12,634 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2593 transitions. [2022-01-18 13:25:12,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2593 transitions. [2022-01-18 13:25:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:12,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:12,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:12,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-18 13:25:12,635 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:12,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash -64673636, now seen corresponding path program 62 times [2022-01-18 13:25:12,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:12,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048564838] [2022-01-18 13:25:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:12,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:12,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048564838] [2022-01-18 13:25:12,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048564838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:12,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:12,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:12,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964777092] [2022-01-18 13:25:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:12,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:12,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:12,975 INFO L87 Difference]: Start difference. First operand 1045 states and 2593 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:14,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:14,163 INFO L93 Difference]: Finished difference Result 1304 states and 3207 transitions. [2022-01-18 13:25:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:25:14,163 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:14,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:14,165 INFO L225 Difference]: With dead ends: 1304 [2022-01-18 13:25:14,165 INFO L226 Difference]: Without dead ends: 1073 [2022-01-18 13:25:14,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=2066, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:25:14,165 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 306 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:14,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3098 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-01-18 13:25:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1029. [2022-01-18 13:25:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.4834630350194553) internal successors, (2553), 1028 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2553 transitions. [2022-01-18 13:25:14,174 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2553 transitions. Word has length 79 [2022-01-18 13:25:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:14,174 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2553 transitions. [2022-01-18 13:25:14,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2553 transitions. [2022-01-18 13:25:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:14,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:14,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:14,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-18 13:25:14,176 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:14,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1581719678, now seen corresponding path program 63 times [2022-01-18 13:25:14,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:14,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521484061] [2022-01-18 13:25:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:14,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:14,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:14,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521484061] [2022-01-18 13:25:14,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521484061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:14,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:14,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:14,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249073064] [2022-01-18 13:25:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:14,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:14,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:14,474 INFO L87 Difference]: Start difference. First operand 1029 states and 2553 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:15,791 INFO L93 Difference]: Finished difference Result 1345 states and 3322 transitions. [2022-01-18 13:25:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:25:15,792 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:15,793 INFO L225 Difference]: With dead ends: 1345 [2022-01-18 13:25:15,793 INFO L226 Difference]: Without dead ends: 1247 [2022-01-18 13:25:15,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=257, Invalid=3049, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:25:15,794 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 351 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:15,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 2864 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-01-18 13:25:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1089. [2022-01-18 13:25:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 2.4908088235294117) internal successors, (2710), 1088 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2710 transitions. [2022-01-18 13:25:15,809 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2710 transitions. Word has length 79 [2022-01-18 13:25:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:15,809 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2710 transitions. [2022-01-18 13:25:15,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2710 transitions. [2022-01-18 13:25:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:15,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:15,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:15,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-18 13:25:15,810 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1396714726, now seen corresponding path program 64 times [2022-01-18 13:25:15,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:15,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382047721] [2022-01-18 13:25:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:15,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:16,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:16,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382047721] [2022-01-18 13:25:16,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382047721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:16,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:16,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:16,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087122610] [2022-01-18 13:25:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:16,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:16,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:16,113 INFO L87 Difference]: Start difference. First operand 1089 states and 2710 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:17,358 INFO L93 Difference]: Finished difference Result 1301 states and 3205 transitions. [2022-01-18 13:25:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:25:17,358 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:17,360 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 13:25:17,360 INFO L226 Difference]: Without dead ends: 1166 [2022-01-18 13:25:17,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2943, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:25:17,360 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 321 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:17,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2982 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-18 13:25:17,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1065. [2022-01-18 13:25:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.4849624060150375) internal successors, (2644), 1064 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2644 transitions. [2022-01-18 13:25:17,370 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2644 transitions. Word has length 79 [2022-01-18 13:25:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:17,370 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2644 transitions. [2022-01-18 13:25:17,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:17,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2644 transitions. [2022-01-18 13:25:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:17,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:17,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:17,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-18 13:25:17,371 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1530247006, now seen corresponding path program 65 times [2022-01-18 13:25:17,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:17,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661115949] [2022-01-18 13:25:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:17,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:17,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:17,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661115949] [2022-01-18 13:25:17,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661115949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:17,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:17,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:17,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918038443] [2022-01-18 13:25:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:17,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:17,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:17,662 INFO L87 Difference]: Start difference. First operand 1065 states and 2644 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:18,653 INFO L93 Difference]: Finished difference Result 1265 states and 3106 transitions. [2022-01-18 13:25:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:25:18,654 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:18,655 INFO L225 Difference]: With dead ends: 1265 [2022-01-18 13:25:18,655 INFO L226 Difference]: Without dead ends: 1085 [2022-01-18 13:25:18,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:25:18,655 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 324 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:18,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2631 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-01-18 13:25:18,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-01-18 13:25:18,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 2.4826923076923078) internal successors, (2582), 1040 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2582 transitions. [2022-01-18 13:25:18,665 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2582 transitions. Word has length 79 [2022-01-18 13:25:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:18,665 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2582 transitions. [2022-01-18 13:25:18,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2582 transitions. [2022-01-18 13:25:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:18,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:18,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:18,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-18 13:25:18,666 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash -779228170, now seen corresponding path program 66 times [2022-01-18 13:25:18,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:18,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736177425] [2022-01-18 13:25:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:18,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:18,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:18,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736177425] [2022-01-18 13:25:18,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736177425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:18,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:18,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:18,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923993540] [2022-01-18 13:25:18,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:18,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:18,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:18,941 INFO L87 Difference]: Start difference. First operand 1041 states and 2582 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:19,717 INFO L93 Difference]: Finished difference Result 1288 states and 3163 transitions. [2022-01-18 13:25:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:25:19,717 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:19,719 INFO L225 Difference]: With dead ends: 1288 [2022-01-18 13:25:19,719 INFO L226 Difference]: Without dead ends: 1069 [2022-01-18 13:25:19,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=1722, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:25:19,719 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 319 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:19,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2352 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-01-18 13:25:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1037. [2022-01-18 13:25:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 1036 states have (on average 2.4816602316602316) internal successors, (2571), 1036 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 2571 transitions. [2022-01-18 13:25:19,728 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 2571 transitions. Word has length 79 [2022-01-18 13:25:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:19,728 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 2571 transitions. [2022-01-18 13:25:19,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 2571 transitions. [2022-01-18 13:25:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:19,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:19,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:19,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-18 13:25:19,729 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:19,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1175838728, now seen corresponding path program 67 times [2022-01-18 13:25:19,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:19,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090753673] [2022-01-18 13:25:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:19,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:20,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:20,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090753673] [2022-01-18 13:25:20,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090753673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:20,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:20,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:20,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673539704] [2022-01-18 13:25:20,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:20,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:20,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:20,027 INFO L87 Difference]: Start difference. First operand 1037 states and 2571 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:20,880 INFO L93 Difference]: Finished difference Result 1349 states and 3312 transitions. [2022-01-18 13:25:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:25:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:20,882 INFO L225 Difference]: With dead ends: 1349 [2022-01-18 13:25:20,882 INFO L226 Difference]: Without dead ends: 1064 [2022-01-18 13:25:20,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=1645, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:25:20,883 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 312 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:20,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2598 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:20,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-18 13:25:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1033. [2022-01-18 13:25:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1032 states have (on average 2.4844961240310077) internal successors, (2564), 1032 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 2564 transitions. [2022-01-18 13:25:20,892 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 2564 transitions. Word has length 79 [2022-01-18 13:25:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:20,892 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 2564 transitions. [2022-01-18 13:25:20,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 2564 transitions. [2022-01-18 13:25:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:20,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:20,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:20,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-18 13:25:20,894 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1728401762, now seen corresponding path program 68 times [2022-01-18 13:25:20,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:20,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469499653] [2022-01-18 13:25:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:20,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:21,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:21,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469499653] [2022-01-18 13:25:21,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469499653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:21,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:21,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:21,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247866718] [2022-01-18 13:25:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:21,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:21,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:21,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:21,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:21,173 INFO L87 Difference]: Start difference. First operand 1033 states and 2564 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:21,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:21,952 INFO L93 Difference]: Finished difference Result 1287 states and 3192 transitions. [2022-01-18 13:25:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:25:21,953 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:21,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:21,954 INFO L225 Difference]: With dead ends: 1287 [2022-01-18 13:25:21,954 INFO L226 Difference]: Without dead ends: 1157 [2022-01-18 13:25:21,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 13:25:21,955 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 241 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:21,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2265 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-01-18 13:25:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1101. [2022-01-18 13:25:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 2.4936363636363637) internal successors, (2743), 1100 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-01-18 13:25:21,965 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-01-18 13:25:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:21,965 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-01-18 13:25:21,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-01-18 13:25:21,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:21,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:21,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:21,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-18 13:25:21,966 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:21,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:21,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1713174368, now seen corresponding path program 69 times [2022-01-18 13:25:21,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:21,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797032368] [2022-01-18 13:25:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:21,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:22,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:22,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797032368] [2022-01-18 13:25:22,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797032368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:22,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:22,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:22,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667229252] [2022-01-18 13:25:22,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:22,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:22,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:22,236 INFO L87 Difference]: Start difference. First operand 1101 states and 2743 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:23,068 INFO L93 Difference]: Finished difference Result 1282 states and 3172 transitions. [2022-01-18 13:25:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:25:23,069 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:23,070 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 13:25:23,070 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 13:25:23,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:25:23,070 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 248 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:23,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 2585 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 13:25:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1105. [2022-01-18 13:25:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.4909420289855073) internal successors, (2750), 1104 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2750 transitions. [2022-01-18 13:25:23,080 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2750 transitions. Word has length 79 [2022-01-18 13:25:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:23,080 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2750 transitions. [2022-01-18 13:25:23,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2750 transitions. [2022-01-18 13:25:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:23,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:23,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:23,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-18 13:25:23,082 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1867555650, now seen corresponding path program 70 times [2022-01-18 13:25:23,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:23,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310052166] [2022-01-18 13:25:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:23,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:23,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:23,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310052166] [2022-01-18 13:25:23,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310052166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:23,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:23,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:23,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68427180] [2022-01-18 13:25:23,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:23,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:23,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:23,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:23,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:23,352 INFO L87 Difference]: Start difference. First operand 1105 states and 2750 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:24,108 INFO L93 Difference]: Finished difference Result 1250 states and 3088 transitions. [2022-01-18 13:25:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:25:24,108 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:24,110 INFO L225 Difference]: With dead ends: 1250 [2022-01-18 13:25:24,110 INFO L226 Difference]: Without dead ends: 1137 [2022-01-18 13:25:24,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:25:24,110 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 296 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:24,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2161 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-01-18 13:25:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1093. [2022-01-18 13:25:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.491758241758242) internal successors, (2721), 1092 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-01-18 13:25:24,120 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-01-18 13:25:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:24,120 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-01-18 13:25:24,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-01-18 13:25:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:24,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:24,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:24,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-18 13:25:24,122 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:24,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1308597058, now seen corresponding path program 71 times [2022-01-18 13:25:24,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:24,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798155262] [2022-01-18 13:25:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:24,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:24,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:24,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798155262] [2022-01-18 13:25:24,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798155262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:24,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:24,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:24,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059407463] [2022-01-18 13:25:24,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:24,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:24,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:24,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:24,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:24,397 INFO L87 Difference]: Start difference. First operand 1093 states and 2721 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:25,453 INFO L93 Difference]: Finished difference Result 1300 states and 3213 transitions. [2022-01-18 13:25:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:25:25,453 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:25,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:25,455 INFO L225 Difference]: With dead ends: 1300 [2022-01-18 13:25:25,455 INFO L226 Difference]: Without dead ends: 1202 [2022-01-18 13:25:25,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:25:25,455 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 254 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:25,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2379 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-01-18 13:25:25,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1117. [2022-01-18 13:25:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.490143369175627) internal successors, (2779), 1116 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-01-18 13:25:25,473 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-01-18 13:25:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:25,473 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-01-18 13:25:25,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-01-18 13:25:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:25,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:25,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:25,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-18 13:25:25,475 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash 7935834, now seen corresponding path program 72 times [2022-01-18 13:25:25,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:25,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148551862] [2022-01-18 13:25:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:25,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:25,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:25,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148551862] [2022-01-18 13:25:25,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148551862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:25,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:25,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:25,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540855957] [2022-01-18 13:25:25,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:25,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:25,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:25,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:25,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:25,718 INFO L87 Difference]: Start difference. First operand 1117 states and 2779 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:26,530 INFO L93 Difference]: Finished difference Result 1268 states and 3125 transitions. [2022-01-18 13:25:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:25:26,531 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:26,532 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 13:25:26,532 INFO L226 Difference]: Without dead ends: 1117 [2022-01-18 13:25:26,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:25:26,533 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 289 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:26,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2240 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-01-18 13:25:26,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1077. [2022-01-18 13:25:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4879182156133828) internal successors, (2677), 1076 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-01-18 13:25:26,548 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-01-18 13:25:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:26,548 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-01-18 13:25:26,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-01-18 13:25:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:26,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:26,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:26,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-18 13:25:26,550 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:26,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash 862026942, now seen corresponding path program 73 times [2022-01-18 13:25:26,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:26,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113256685] [2022-01-18 13:25:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:26,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:26,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:26,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113256685] [2022-01-18 13:25:26,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113256685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:26,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:26,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:26,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107709735] [2022-01-18 13:25:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:26,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:26,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:26,834 INFO L87 Difference]: Start difference. First operand 1077 states and 2677 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:27,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:27,893 INFO L93 Difference]: Finished difference Result 1335 states and 3299 transitions. [2022-01-18 13:25:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:25:27,893 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:27,894 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 13:25:27,894 INFO L226 Difference]: Without dead ends: 1237 [2022-01-18 13:25:27,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=2141, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:25:27,895 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 316 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:27,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2794 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:25:27,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-01-18 13:25:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1105. [2022-01-18 13:25:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.48731884057971) internal successors, (2746), 1104 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-01-18 13:25:27,905 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-01-18 13:25:27,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:27,905 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-01-18 13:25:27,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-01-18 13:25:27,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:27,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:27,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:27,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-18 13:25:27,907 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:27,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2116407462, now seen corresponding path program 74 times [2022-01-18 13:25:27,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:27,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26731305] [2022-01-18 13:25:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:27,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:28,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:28,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26731305] [2022-01-18 13:25:28,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26731305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:28,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:28,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:28,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794966617] [2022-01-18 13:25:28,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:28,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:28,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:28,209 INFO L87 Difference]: Start difference. First operand 1105 states and 2746 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:29,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:29,205 INFO L93 Difference]: Finished difference Result 1291 states and 3182 transitions. [2022-01-18 13:25:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:25:29,206 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:29,207 INFO L225 Difference]: With dead ends: 1291 [2022-01-18 13:25:29,207 INFO L226 Difference]: Without dead ends: 1156 [2022-01-18 13:25:29,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:25:29,208 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 301 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:29,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2504 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-01-18 13:25:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1081. [2022-01-18 13:25:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4851851851851854) internal successors, (2684), 1080 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2684 transitions. [2022-01-18 13:25:29,217 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2684 transitions. Word has length 79 [2022-01-18 13:25:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:29,218 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2684 transitions. [2022-01-18 13:25:29,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:29,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2684 transitions. [2022-01-18 13:25:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:29,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:29,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:29,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-18 13:25:29,219 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1048044804, now seen corresponding path program 75 times [2022-01-18 13:25:29,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:29,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981423917] [2022-01-18 13:25:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:29,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:29,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:29,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981423917] [2022-01-18 13:25:29,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981423917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:29,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:29,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:29,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242639912] [2022-01-18 13:25:29,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:29,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:29,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:29,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:29,509 INFO L87 Difference]: Start difference. First operand 1081 states and 2684 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:30,327 INFO L93 Difference]: Finished difference Result 1279 states and 3149 transitions. [2022-01-18 13:25:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:25:30,327 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:30,329 INFO L225 Difference]: With dead ends: 1279 [2022-01-18 13:25:30,329 INFO L226 Difference]: Without dead ends: 1109 [2022-01-18 13:25:30,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:25:30,329 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 276 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:30,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2701 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-01-18 13:25:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1069. [2022-01-18 13:25:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 2.485955056179775) internal successors, (2655), 1068 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-01-18 13:25:30,342 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-01-18 13:25:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:30,342 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-01-18 13:25:30,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-01-18 13:25:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:30,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:30,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:30,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-18 13:25:30,343 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:30,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:30,343 INFO L85 PathProgramCache]: Analyzing trace with hash 926730080, now seen corresponding path program 76 times [2022-01-18 13:25:30,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:30,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694745413] [2022-01-18 13:25:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:30,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:30,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:30,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694745413] [2022-01-18 13:25:30,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694745413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:30,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:30,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:30,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922661955] [2022-01-18 13:25:30,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:30,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:30,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:30,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:30,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:30,633 INFO L87 Difference]: Start difference. First operand 1069 states and 2655 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:32,782 INFO L93 Difference]: Finished difference Result 1333 states and 3285 transitions. [2022-01-18 13:25:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:25:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:32,784 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 13:25:32,784 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 13:25:32,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:25:32,785 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 304 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:32,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2549 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 13:25:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 13:25:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1117. [2022-01-18 13:25:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1116 states have (on average 2.490143369175627) internal successors, (2779), 1116 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-01-18 13:25:32,795 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-01-18 13:25:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:32,795 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-01-18 13:25:32,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-01-18 13:25:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:32,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:32,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:32,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-18 13:25:32,796 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:32,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2051704324, now seen corresponding path program 77 times [2022-01-18 13:25:32,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:32,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102620320] [2022-01-18 13:25:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:32,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:33,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:33,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102620320] [2022-01-18 13:25:33,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102620320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:33,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:33,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:33,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572277765] [2022-01-18 13:25:33,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:33,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:33,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:33,059 INFO L87 Difference]: Start difference. First operand 1117 states and 2779 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:34,343 INFO L93 Difference]: Finished difference Result 1301 states and 3197 transitions. [2022-01-18 13:25:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:25:34,344 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:34,345 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 13:25:34,345 INFO L226 Difference]: Without dead ends: 1166 [2022-01-18 13:25:34,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=1967, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:25:34,346 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 287 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:34,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2663 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:25:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-18 13:25:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1093. [2022-01-18 13:25:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.4844322344322345) internal successors, (2713), 1092 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2713 transitions. [2022-01-18 13:25:34,355 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2713 transitions. Word has length 79 [2022-01-18 13:25:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:34,355 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2713 transitions. [2022-01-18 13:25:34,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2713 transitions. [2022-01-18 13:25:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:34,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:34,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:34,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-18 13:25:34,356 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:34,357 INFO L85 PathProgramCache]: Analyzing trace with hash 875257408, now seen corresponding path program 78 times [2022-01-18 13:25:34,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:34,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116111446] [2022-01-18 13:25:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:34,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:34,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:34,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116111446] [2022-01-18 13:25:34,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116111446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:34,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:34,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:34,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81708863] [2022-01-18 13:25:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:34,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:34,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:34,646 INFO L87 Difference]: Start difference. First operand 1093 states and 2713 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:35,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:35,485 INFO L93 Difference]: Finished difference Result 1277 states and 3131 transitions. [2022-01-18 13:25:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:25:35,486 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:35,487 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 13:25:35,487 INFO L226 Difference]: Without dead ends: 1081 [2022-01-18 13:25:35,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:25:35,487 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 259 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:35,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2724 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:35,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-01-18 13:25:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1053. [2022-01-18 13:25:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4819391634980987) internal successors, (2611), 1052 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-01-18 13:25:35,497 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-01-18 13:25:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:35,497 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-01-18 13:25:35,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-01-18 13:25:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:35,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:35,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:35,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-18 13:25:35,498 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:35,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash 951326560, now seen corresponding path program 79 times [2022-01-18 13:25:35,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:35,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680120211] [2022-01-18 13:25:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:35,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:35,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:35,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680120211] [2022-01-18 13:25:35,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680120211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:35,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:35,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:35,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116609752] [2022-01-18 13:25:35,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:35,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:35,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:35,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:35,818 INFO L87 Difference]: Start difference. First operand 1053 states and 2611 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:37,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:37,597 INFO L93 Difference]: Finished difference Result 1365 states and 3369 transitions. [2022-01-18 13:25:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:25:37,598 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:37,599 INFO L225 Difference]: With dead ends: 1365 [2022-01-18 13:25:37,600 INFO L226 Difference]: Without dead ends: 1267 [2022-01-18 13:25:37,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:25:37,600 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 339 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:37,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2854 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:25:37,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-18 13:25:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1105. [2022-01-18 13:25:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.48731884057971) internal successors, (2746), 1104 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-01-18 13:25:37,612 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-01-18 13:25:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:37,612 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-01-18 13:25:37,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-01-18 13:25:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:37,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:37,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:37,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-18 13:25:37,613 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:37,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2027107844, now seen corresponding path program 80 times [2022-01-18 13:25:37,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:37,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813618470] [2022-01-18 13:25:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:37,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:37,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:37,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813618470] [2022-01-18 13:25:37,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813618470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:37,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:37,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:37,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137987379] [2022-01-18 13:25:37,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:37,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:37,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:37,928 INFO L87 Difference]: Start difference. First operand 1105 states and 2746 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:39,342 INFO L93 Difference]: Finished difference Result 1321 states and 3252 transitions. [2022-01-18 13:25:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:25:39,342 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:39,343 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 13:25:39,343 INFO L226 Difference]: Without dead ends: 1186 [2022-01-18 13:25:39,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:25:39,344 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 341 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:39,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2699 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:25:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-18 13:25:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1081. [2022-01-18 13:25:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4814814814814814) internal successors, (2680), 1080 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2680 transitions. [2022-01-18 13:25:39,354 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2680 transitions. Word has length 79 [2022-01-18 13:25:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:39,354 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2680 transitions. [2022-01-18 13:25:39,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2680 transitions. [2022-01-18 13:25:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:39,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:39,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:39,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-18 13:25:39,355 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:39,355 INFO L85 PathProgramCache]: Analyzing trace with hash 899853888, now seen corresponding path program 81 times [2022-01-18 13:25:39,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:39,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917084265] [2022-01-18 13:25:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:39,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:39,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:39,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917084265] [2022-01-18 13:25:39,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917084265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:39,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:39,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:39,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661430205] [2022-01-18 13:25:39,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:39,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:39,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:39,624 INFO L87 Difference]: Start difference. First operand 1081 states and 2680 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:40,532 INFO L93 Difference]: Finished difference Result 1285 states and 3153 transitions. [2022-01-18 13:25:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:25:40,532 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:40,533 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 13:25:40,534 INFO L226 Difference]: Without dead ends: 1105 [2022-01-18 13:25:40,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1975, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:25:40,534 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 298 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:40,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2625 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-01-18 13:25:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1057. [2022-01-18 13:25:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 2.4791666666666665) internal successors, (2618), 1056 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2618 transitions. [2022-01-18 13:25:40,544 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2618 transitions. Word has length 79 [2022-01-18 13:25:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:40,544 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2618 transitions. [2022-01-18 13:25:40,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2618 transitions. [2022-01-18 13:25:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:40,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:40,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:40,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-18 13:25:40,545 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:40,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:40,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1409621288, now seen corresponding path program 82 times [2022-01-18 13:25:40,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:40,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853495092] [2022-01-18 13:25:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:40,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:40,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:40,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853495092] [2022-01-18 13:25:40,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853495092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:40,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:40,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:40,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624000581] [2022-01-18 13:25:40,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:40,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:40,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:40,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:40,851 INFO L87 Difference]: Start difference. First operand 1057 states and 2618 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:41,636 INFO L93 Difference]: Finished difference Result 1300 states and 3188 transitions. [2022-01-18 13:25:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:25:41,637 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:41,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:41,638 INFO L225 Difference]: With dead ends: 1300 [2022-01-18 13:25:41,638 INFO L226 Difference]: Without dead ends: 1073 [2022-01-18 13:25:41,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:25:41,639 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 286 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:41,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2552 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-01-18 13:25:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1045. [2022-01-18 13:25:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 2.4760536398467434) internal successors, (2585), 1044 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2585 transitions. [2022-01-18 13:25:41,648 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2585 transitions. Word has length 79 [2022-01-18 13:25:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:41,648 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2585 transitions. [2022-01-18 13:25:41,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2585 transitions. [2022-01-18 13:25:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:41,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:41,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:41,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-18 13:25:41,649 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash -944710466, now seen corresponding path program 83 times [2022-01-18 13:25:41,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:41,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041910693] [2022-01-18 13:25:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:41,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:41,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:41,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041910693] [2022-01-18 13:25:41,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041910693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:41,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:41,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:41,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601552688] [2022-01-18 13:25:41,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:41,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:41,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:41,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:41,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:41,977 INFO L87 Difference]: Start difference. First operand 1045 states and 2585 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:43,276 INFO L93 Difference]: Finished difference Result 1361 states and 3354 transitions. [2022-01-18 13:25:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:25:43,276 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:43,278 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 13:25:43,278 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 13:25:43,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:25:43,279 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 312 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:43,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2974 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 13:25:43,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1105. [2022-01-18 13:25:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 2.483695652173913) internal successors, (2742), 1104 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2742 transitions. [2022-01-18 13:25:43,289 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2742 transitions. Word has length 79 [2022-01-18 13:25:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:43,289 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2742 transitions. [2022-01-18 13:25:43,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2742 transitions. [2022-01-18 13:25:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:43,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:43,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:43,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-18 13:25:43,290 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash 371822426, now seen corresponding path program 84 times [2022-01-18 13:25:43,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:43,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181539470] [2022-01-18 13:25:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:43,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:43,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:43,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181539470] [2022-01-18 13:25:43,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181539470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:43,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:43,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:43,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503491918] [2022-01-18 13:25:43,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:43,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:43,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:43,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:43,583 INFO L87 Difference]: Start difference. First operand 1105 states and 2742 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:44,999 INFO L93 Difference]: Finished difference Result 1317 states and 3237 transitions. [2022-01-18 13:25:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:25:44,999 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:45,001 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 13:25:45,001 INFO L226 Difference]: Without dead ends: 1182 [2022-01-18 13:25:45,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=2730, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:25:45,001 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 346 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:45,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2689 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:25:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-18 13:25:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1081. [2022-01-18 13:25:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.477777777777778) internal successors, (2676), 1080 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2676 transitions. [2022-01-18 13:25:45,011 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2676 transitions. Word has length 79 [2022-01-18 13:25:45,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:45,012 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2676 transitions. [2022-01-18 13:25:45,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2676 transitions. [2022-01-18 13:25:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:45,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:45,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:45,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-18 13:25:45,013 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:45,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:45,013 INFO L85 PathProgramCache]: Analyzing trace with hash -996183138, now seen corresponding path program 85 times [2022-01-18 13:25:45,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:45,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785923749] [2022-01-18 13:25:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:45,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:45,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:45,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785923749] [2022-01-18 13:25:45,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785923749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:45,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:45,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:45,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109957729] [2022-01-18 13:25:45,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:45,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:45,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:45,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:45,279 INFO L87 Difference]: Start difference. First operand 1081 states and 2676 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:46,276 INFO L93 Difference]: Finished difference Result 1281 states and 3138 transitions. [2022-01-18 13:25:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:25:46,276 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:46,277 INFO L225 Difference]: With dead ends: 1281 [2022-01-18 13:25:46,277 INFO L226 Difference]: Without dead ends: 1101 [2022-01-18 13:25:46,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:25:46,278 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 289 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:46,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2741 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-01-18 13:25:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1057. [2022-01-18 13:25:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 2.475378787878788) internal successors, (2614), 1056 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2614 transitions. [2022-01-18 13:25:46,287 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2614 transitions. Word has length 79 [2022-01-18 13:25:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:46,287 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2614 transitions. [2022-01-18 13:25:46,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2614 transitions. [2022-01-18 13:25:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:46,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:46,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:46,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-18 13:25:46,288 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash 989308982, now seen corresponding path program 86 times [2022-01-18 13:25:46,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:46,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291033416] [2022-01-18 13:25:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:46,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:46,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:46,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291033416] [2022-01-18 13:25:46,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291033416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:46,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:46,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:46,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356797234] [2022-01-18 13:25:46,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:46,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:46,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:46,552 INFO L87 Difference]: Start difference. First operand 1057 states and 2614 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:47,374 INFO L93 Difference]: Finished difference Result 1304 states and 3195 transitions. [2022-01-18 13:25:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:25:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:47,375 INFO L225 Difference]: With dead ends: 1304 [2022-01-18 13:25:47,375 INFO L226 Difference]: Without dead ends: 1061 [2022-01-18 13:25:47,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:25:47,376 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 300 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:47,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2486 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-01-18 13:25:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-01-18 13:25:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.4795719844357977) internal successors, (2549), 1028 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-01-18 13:25:47,385 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-01-18 13:25:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:47,385 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-01-18 13:25:47,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-01-18 13:25:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:47,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:47,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:47,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-18 13:25:47,386 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1571781226, now seen corresponding path program 87 times [2022-01-18 13:25:47,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:47,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962301774] [2022-01-18 13:25:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:47,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:47,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:47,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962301774] [2022-01-18 13:25:47,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962301774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:47,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:47,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:47,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748775838] [2022-01-18 13:25:47,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:47,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:47,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:47,672 INFO L87 Difference]: Start difference. First operand 1029 states and 2549 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:48,501 INFO L93 Difference]: Finished difference Result 1298 states and 3178 transitions. [2022-01-18 13:25:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:25:48,501 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:48,503 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 13:25:48,503 INFO L226 Difference]: Without dead ends: 1029 [2022-01-18 13:25:48,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:25:48,503 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 297 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:48,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2678 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-01-18 13:25:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1013. [2022-01-18 13:25:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 2.4792490118577075) internal successors, (2509), 1012 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2509 transitions. [2022-01-18 13:25:48,512 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2509 transitions. Word has length 79 [2022-01-18 13:25:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:48,512 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2509 transitions. [2022-01-18 13:25:48,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:48,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2509 transitions. [2022-01-18 13:25:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:48,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:48,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:48,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-18 13:25:48,513 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash 881796286, now seen corresponding path program 88 times [2022-01-18 13:25:48,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:48,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023518898] [2022-01-18 13:25:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:48,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:48,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:48,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023518898] [2022-01-18 13:25:48,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023518898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:48,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:48,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:25:48,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133843498] [2022-01-18 13:25:48,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:48,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:25:48,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:48,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:25:48,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:25:48,814 INFO L87 Difference]: Start difference. First operand 1013 states and 2509 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:50,315 INFO L93 Difference]: Finished difference Result 1321 states and 3256 transitions. [2022-01-18 13:25:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:25:50,315 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:50,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:50,317 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 13:25:50,317 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 13:25:50,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2942, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:25:50,318 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 344 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:50,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2981 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:25:50,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 13:25:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1077. [2022-01-18 13:25:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 2.4879182156133828) internal successors, (2677), 1076 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-01-18 13:25:50,330 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-01-18 13:25:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:50,330 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-01-18 13:25:50,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-01-18 13:25:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:50,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:50,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-18 13:25:50,331 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2096638118, now seen corresponding path program 89 times [2022-01-18 13:25:50,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395136426] [2022-01-18 13:25:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:50,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:50,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:50,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395136426] [2022-01-18 13:25:50,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395136426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:50,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:50,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:25:50,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470486809] [2022-01-18 13:25:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:50,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:25:50,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:25:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:25:50,680 INFO L87 Difference]: Start difference. First operand 1077 states and 2677 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:51,969 INFO L93 Difference]: Finished difference Result 1277 states and 3139 transitions. [2022-01-18 13:25:51,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:25:51,970 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:51,971 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 13:25:51,971 INFO L226 Difference]: Without dead ends: 1142 [2022-01-18 13:25:51,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=2838, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:25:51,971 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 330 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:51,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2831 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:25:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-01-18 13:25:51,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1053. [2022-01-18 13:25:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 2.4819391634980987) internal successors, (2611), 1052 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-01-18 13:25:51,981 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-01-18 13:25:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:51,981 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-01-18 13:25:51,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-01-18 13:25:51,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:51,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:51,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:51,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-18 13:25:51,982 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:51,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:51,982 INFO L85 PathProgramCache]: Analyzing trace with hash 830323614, now seen corresponding path program 90 times [2022-01-18 13:25:51,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:51,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880784662] [2022-01-18 13:25:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:51,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:52,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:52,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880784662] [2022-01-18 13:25:52,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880784662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:52,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:52,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:25:52,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422772241] [2022-01-18 13:25:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:52,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:25:52,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:52,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:25:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:25:52,273 INFO L87 Difference]: Start difference. First operand 1053 states and 2611 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:53,218 INFO L93 Difference]: Finished difference Result 1241 states and 3040 transitions. [2022-01-18 13:25:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:25:53,218 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:53,219 INFO L225 Difference]: With dead ends: 1241 [2022-01-18 13:25:53,219 INFO L226 Difference]: Without dead ends: 1061 [2022-01-18 13:25:53,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=2157, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:25:53,220 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 303 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:53,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2607 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-01-18 13:25:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-01-18 13:25:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.4795719844357977) internal successors, (2549), 1028 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-01-18 13:25:53,229 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-01-18 13:25:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:53,229 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-01-18 13:25:53,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-01-18 13:25:53,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:53,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:53,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:53,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-18 13:25:53,230 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:53,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1479151562, now seen corresponding path program 91 times [2022-01-18 13:25:53,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:53,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601545065] [2022-01-18 13:25:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:53,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:53,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:53,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601545065] [2022-01-18 13:25:53,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601545065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:53,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:53,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:53,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388050555] [2022-01-18 13:25:53,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:53,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:53,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:53,503 INFO L87 Difference]: Start difference. First operand 1029 states and 2549 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:54,302 INFO L93 Difference]: Finished difference Result 1264 states and 3097 transitions. [2022-01-18 13:25:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:25:54,302 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:54,303 INFO L225 Difference]: With dead ends: 1264 [2022-01-18 13:25:54,303 INFO L226 Difference]: Without dead ends: 1045 [2022-01-18 13:25:54,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:25:54,304 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 312 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:54,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2476 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:54,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-01-18 13:25:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1025. [2022-01-18 13:25:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1024 states have (on average 2.478515625) internal successors, (2538), 1024 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 2538 transitions. [2022-01-18 13:25:54,313 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 2538 transitions. Word has length 79 [2022-01-18 13:25:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:54,313 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 2538 transitions. [2022-01-18 13:25:54,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 2538 transitions. [2022-01-18 13:25:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:54,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:54,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:54,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-18 13:25:54,314 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:54,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:54,315 INFO L85 PathProgramCache]: Analyzing trace with hash 475915336, now seen corresponding path program 92 times [2022-01-18 13:25:54,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:54,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818910822] [2022-01-18 13:25:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:54,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:54,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:54,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818910822] [2022-01-18 13:25:54,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818910822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:54,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:54,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:54,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021671369] [2022-01-18 13:25:54,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:54,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:54,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:54,652 INFO L87 Difference]: Start difference. First operand 1025 states and 2538 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:55,602 INFO L93 Difference]: Finished difference Result 1294 states and 3167 transitions. [2022-01-18 13:25:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:25:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:55,603 INFO L225 Difference]: With dead ends: 1294 [2022-01-18 13:25:55,603 INFO L226 Difference]: Without dead ends: 1033 [2022-01-18 13:25:55,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=1806, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:25:55,604 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 313 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:55,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2818 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-01-18 13:25:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1017. [2022-01-18 13:25:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 2.4763779527559056) internal successors, (2516), 1016 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2516 transitions. [2022-01-18 13:25:55,612 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2516 transitions. Word has length 79 [2022-01-18 13:25:55,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:55,613 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2516 transitions. [2022-01-18 13:25:55,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:55,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2516 transitions. [2022-01-18 13:25:55,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:55,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:55,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:55,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-18 13:25:55,614 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1425757590, now seen corresponding path program 93 times [2022-01-18 13:25:55,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:55,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591976370] [2022-01-18 13:25:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:55,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:55,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:55,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591976370] [2022-01-18 13:25:55,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591976370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:55,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:55,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:55,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409015736] [2022-01-18 13:25:55,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:55,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:55,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:55,910 INFO L87 Difference]: Start difference. First operand 1017 states and 2516 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:56,689 INFO L93 Difference]: Finished difference Result 1289 states and 3147 transitions. [2022-01-18 13:25:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:25:56,689 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:56,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:56,691 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 13:25:56,691 INFO L226 Difference]: Without dead ends: 991 [2022-01-18 13:25:56,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=1567, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:25:56,691 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 323 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:56,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2536 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:25:56,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-18 13:25:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-01-18 13:25:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 2.48989898989899) internal successors, (2465), 990 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 2465 transitions. [2022-01-18 13:25:56,700 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 2465 transitions. Word has length 79 [2022-01-18 13:25:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:56,700 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 2465 transitions. [2022-01-18 13:25:56,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 2465 transitions. [2022-01-18 13:25:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:56,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:56,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:56,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-18 13:25:56,701 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:56,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash 192804102, now seen corresponding path program 94 times [2022-01-18 13:25:56,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:56,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323813662] [2022-01-18 13:25:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:56,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:56,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:56,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323813662] [2022-01-18 13:25:56,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323813662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:56,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:56,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:25:56,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531947321] [2022-01-18 13:25:56,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:56,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:25:56,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:56,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:25:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:25:56,961 INFO L87 Difference]: Start difference. First operand 991 states and 2465 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:57,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:57,835 INFO L93 Difference]: Finished difference Result 1337 states and 3346 transitions. [2022-01-18 13:25:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:25:57,835 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:57,837 INFO L225 Difference]: With dead ends: 1337 [2022-01-18 13:25:57,837 INFO L226 Difference]: Without dead ends: 1207 [2022-01-18 13:25:57,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:25:57,837 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 303 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:57,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2333 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-18 13:25:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1099. [2022-01-18 13:25:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5081967213114753) internal successors, (2754), 1098 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2754 transitions. [2022-01-18 13:25:57,848 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2754 transitions. Word has length 79 [2022-01-18 13:25:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:57,848 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2754 transitions. [2022-01-18 13:25:57,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2754 transitions. [2022-01-18 13:25:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:57,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:57,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:57,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-18 13:25:57,850 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:57,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash -660587064, now seen corresponding path program 95 times [2022-01-18 13:25:57,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:57,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597941240] [2022-01-18 13:25:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:57,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:58,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:58,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597941240] [2022-01-18 13:25:58,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597941240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:58,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:58,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:58,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4548572] [2022-01-18 13:25:58,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:58,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:58,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:58,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:58,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:58,142 INFO L87 Difference]: Start difference. First operand 1099 states and 2754 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:25:59,162 INFO L93 Difference]: Finished difference Result 1348 states and 3366 transitions. [2022-01-18 13:25:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:25:59,162 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:25:59,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:25:59,164 INFO L225 Difference]: With dead ends: 1348 [2022-01-18 13:25:59,164 INFO L226 Difference]: Without dead ends: 1250 [2022-01-18 13:25:59,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2228, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:25:59,165 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 309 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:25:59,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2714 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:25:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-01-18 13:25:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1103. [2022-01-18 13:25:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.5054446460980038) internal successors, (2761), 1102 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2761 transitions. [2022-01-18 13:25:59,177 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2761 transitions. Word has length 79 [2022-01-18 13:25:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:25:59,178 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2761 transitions. [2022-01-18 13:25:59,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:25:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2761 transitions. [2022-01-18 13:25:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:25:59,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:25:59,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:25:59,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-18 13:25:59,179 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:25:59,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:25:59,180 INFO L85 PathProgramCache]: Analyzing trace with hash 53650214, now seen corresponding path program 96 times [2022-01-18 13:25:59,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:25:59,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084786544] [2022-01-18 13:25:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:25:59,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:25:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:25:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:25:59,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:25:59,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084786544] [2022-01-18 13:25:59,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084786544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:25:59,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:25:59,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:25:59,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618761761] [2022-01-18 13:25:59,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:25:59,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:25:59,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:25:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:25:59,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:25:59,453 INFO L87 Difference]: Start difference. First operand 1103 states and 2761 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:00,459 INFO L93 Difference]: Finished difference Result 1331 states and 3317 transitions. [2022-01-18 13:26:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:26:00,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:00,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:00,461 INFO L225 Difference]: With dead ends: 1331 [2022-01-18 13:26:00,461 INFO L226 Difference]: Without dead ends: 1218 [2022-01-18 13:26:00,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:26:00,461 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 295 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:00,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2717 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-01-18 13:26:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1091. [2022-01-18 13:26:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.5027522935779816) internal successors, (2728), 1090 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2728 transitions. [2022-01-18 13:26:00,471 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2728 transitions. Word has length 79 [2022-01-18 13:26:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:00,471 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2728 transitions. [2022-01-18 13:26:00,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2728 transitions. [2022-01-18 13:26:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:00,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:00,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:00,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-18 13:26:00,473 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:00,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash 379098440, now seen corresponding path program 97 times [2022-01-18 13:26:00,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:00,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991709598] [2022-01-18 13:26:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:00,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:00,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:00,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991709598] [2022-01-18 13:26:00,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991709598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:00,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:00,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:00,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364979743] [2022-01-18 13:26:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:00,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:00,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:00,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:00,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:00,728 INFO L87 Difference]: Start difference. First operand 1091 states and 2728 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:01,536 INFO L93 Difference]: Finished difference Result 1309 states and 3257 transitions. [2022-01-18 13:26:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:26:01,537 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:01,538 INFO L225 Difference]: With dead ends: 1309 [2022-01-18 13:26:01,538 INFO L226 Difference]: Without dead ends: 1159 [2022-01-18 13:26:01,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=1556, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:26:01,539 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 282 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:01,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 2344 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-01-18 13:26:01,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1087. [2022-01-18 13:26:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.501841620626151) internal successors, (2717), 1086 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:01,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2717 transitions. [2022-01-18 13:26:01,548 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2717 transitions. Word has length 79 [2022-01-18 13:26:01,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:01,548 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2717 transitions. [2022-01-18 13:26:01,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2717 transitions. [2022-01-18 13:26:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:01,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:01,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:01,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-18 13:26:01,550 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:01,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1240680774, now seen corresponding path program 98 times [2022-01-18 13:26:01,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:01,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780079152] [2022-01-18 13:26:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:01,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:01,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:01,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780079152] [2022-01-18 13:26:01,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780079152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:01,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:01,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:01,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962457086] [2022-01-18 13:26:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:01,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:01,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:01,842 INFO L87 Difference]: Start difference. First operand 1087 states and 2717 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:03,569 INFO L93 Difference]: Finished difference Result 1322 states and 3286 transitions. [2022-01-18 13:26:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:26:03,570 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:03,571 INFO L225 Difference]: With dead ends: 1322 [2022-01-18 13:26:03,571 INFO L226 Difference]: Without dead ends: 1224 [2022-01-18 13:26:03,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:26:03,571 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 275 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:03,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2396 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 13:26:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-01-18 13:26:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1111. [2022-01-18 13:26:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.5) internal successors, (2775), 1110 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2775 transitions. [2022-01-18 13:26:03,581 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2775 transitions. Word has length 79 [2022-01-18 13:26:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:03,581 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2775 transitions. [2022-01-18 13:26:03,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2775 transitions. [2022-01-18 13:26:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:03,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:03,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:03,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-18 13:26:03,582 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:03,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1737753630, now seen corresponding path program 99 times [2022-01-18 13:26:03,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:03,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717103068] [2022-01-18 13:26:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:03,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:03,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:03,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717103068] [2022-01-18 13:26:03,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717103068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:03,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:03,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:03,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028640916] [2022-01-18 13:26:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:03,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:03,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:03,828 INFO L87 Difference]: Start difference. First operand 1111 states and 2775 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:04,593 INFO L93 Difference]: Finished difference Result 1305 states and 3233 transitions. [2022-01-18 13:26:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:26:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:04,595 INFO L225 Difference]: With dead ends: 1305 [2022-01-18 13:26:04,595 INFO L226 Difference]: Without dead ends: 1146 [2022-01-18 13:26:04,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:26:04,595 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 286 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:04,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2249 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-01-18 13:26:04,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1063. [2022-01-18 13:26:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.5) internal successors, (2655), 1062 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2655 transitions. [2022-01-18 13:26:04,605 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2655 transitions. Word has length 79 [2022-01-18 13:26:04,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:04,605 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2655 transitions. [2022-01-18 13:26:04,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:04,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2655 transitions. [2022-01-18 13:26:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:04,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:04,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:04,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-18 13:26:04,606 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:04,606 INFO L85 PathProgramCache]: Analyzing trace with hash 846263976, now seen corresponding path program 100 times [2022-01-18 13:26:04,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:04,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455964362] [2022-01-18 13:26:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:04,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:04,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:04,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455964362] [2022-01-18 13:26:04,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455964362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:04,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:04,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:04,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5148591] [2022-01-18 13:26:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:04,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:04,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:04,866 INFO L87 Difference]: Start difference. First operand 1063 states and 2655 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:05,701 INFO L93 Difference]: Finished difference Result 1301 states and 3239 transitions. [2022-01-18 13:26:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:26:05,701 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:05,703 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 13:26:05,703 INFO L226 Difference]: Without dead ends: 1171 [2022-01-18 13:26:05,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:26:05,704 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 293 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:05,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2156 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-01-18 13:26:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1083. [2022-01-18 13:26:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.497227356746765) internal successors, (2702), 1082 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-01-18 13:26:05,714 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-01-18 13:26:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:05,714 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-01-18 13:26:05,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-01-18 13:26:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:05,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:05,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:05,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-18 13:26:05,715 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash -7127190, now seen corresponding path program 101 times [2022-01-18 13:26:05,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:05,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604704526] [2022-01-18 13:26:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:05,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:05,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:05,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604704526] [2022-01-18 13:26:05,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604704526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:05,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:05,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:05,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810749428] [2022-01-18 13:26:05,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:05,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:05,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:05,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:05,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:05,990 INFO L87 Difference]: Start difference. First operand 1083 states and 2702 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:06,911 INFO L93 Difference]: Finished difference Result 1292 states and 3208 transitions. [2022-01-18 13:26:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:26:06,911 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:06,913 INFO L225 Difference]: With dead ends: 1292 [2022-01-18 13:26:06,913 INFO L226 Difference]: Without dead ends: 1194 [2022-01-18 13:26:06,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:26:06,914 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 316 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:06,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2515 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-01-18 13:26:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-01-18 13:26:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.494475138121547) internal successors, (2709), 1086 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-01-18 13:26:06,930 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-01-18 13:26:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:06,930 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-01-18 13:26:06,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-01-18 13:26:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:06,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:06,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:06,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-18 13:26:06,932 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:06,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 707110088, now seen corresponding path program 102 times [2022-01-18 13:26:06,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:06,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24657434] [2022-01-18 13:26:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:06,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:07,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:07,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24657434] [2022-01-18 13:26:07,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24657434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:07,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:07,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:07,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919175585] [2022-01-18 13:26:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:07,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:07,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:07,220 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:08,123 INFO L93 Difference]: Finished difference Result 1275 states and 3159 transitions. [2022-01-18 13:26:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:26:08,123 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:08,125 INFO L225 Difference]: With dead ends: 1275 [2022-01-18 13:26:08,125 INFO L226 Difference]: Without dead ends: 1162 [2022-01-18 13:26:08,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:26:08,125 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 305 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:08,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2557 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-18 13:26:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1075. [2022-01-18 13:26:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4990689013035383) internal successors, (2684), 1074 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2684 transitions. [2022-01-18 13:26:08,135 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2684 transitions. Word has length 79 [2022-01-18 13:26:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:08,135 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2684 transitions. [2022-01-18 13:26:08,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2684 transitions. [2022-01-18 13:26:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:08,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:08,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:08,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-18 13:26:08,136 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1032558314, now seen corresponding path program 103 times [2022-01-18 13:26:08,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:08,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204801592] [2022-01-18 13:26:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:08,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:08,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:08,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204801592] [2022-01-18 13:26:08,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204801592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:08,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:08,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:08,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565487640] [2022-01-18 13:26:08,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:08,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:08,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:08,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:08,397 INFO L87 Difference]: Start difference. First operand 1075 states and 2684 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:09,249 INFO L93 Difference]: Finished difference Result 1281 states and 3180 transitions. [2022-01-18 13:26:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:26:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:09,251 INFO L225 Difference]: With dead ends: 1281 [2022-01-18 13:26:09,251 INFO L226 Difference]: Without dead ends: 1131 [2022-01-18 13:26:09,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:26:09,251 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 237 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:09,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2271 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-01-18 13:26:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1071. [2022-01-18 13:26:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4981308411214953) internal successors, (2673), 1070 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2673 transitions. [2022-01-18 13:26:09,260 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2673 transitions. Word has length 79 [2022-01-18 13:26:09,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:09,260 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2673 transitions. [2022-01-18 13:26:09,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:09,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2673 transitions. [2022-01-18 13:26:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:09,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:09,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:09,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-18 13:26:09,262 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash 325977350, now seen corresponding path program 104 times [2022-01-18 13:26:09,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:09,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016311207] [2022-01-18 13:26:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:09,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:09,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:09,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016311207] [2022-01-18 13:26:09,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016311207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:09,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:09,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:09,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127071883] [2022-01-18 13:26:09,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:09,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:09,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:09,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:09,540 INFO L87 Difference]: Start difference. First operand 1071 states and 2673 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:10,312 INFO L93 Difference]: Finished difference Result 1305 states and 3234 transitions. [2022-01-18 13:26:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 13:26:10,312 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:10,313 INFO L225 Difference]: With dead ends: 1305 [2022-01-18 13:26:10,313 INFO L226 Difference]: Without dead ends: 1103 [2022-01-18 13:26:10,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 13:26:10,314 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 234 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:10,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 2563 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-01-18 13:26:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-01-18 13:26:10,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.4961759082217974) internal successors, (2611), 1046 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2611 transitions. [2022-01-18 13:26:10,323 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2611 transitions. Word has length 79 [2022-01-18 13:26:10,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:10,323 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2611 transitions. [2022-01-18 13:26:10,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:10,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2611 transitions. [2022-01-18 13:26:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:10,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:10,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:10,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-18 13:26:10,324 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:10,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1521068648, now seen corresponding path program 105 times [2022-01-18 13:26:10,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:10,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607401648] [2022-01-18 13:26:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:10,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:10,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:10,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607401648] [2022-01-18 13:26:10,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607401648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:10,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:10,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:10,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109251123] [2022-01-18 13:26:10,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:10,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:10,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:10,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:10,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:10,595 INFO L87 Difference]: Start difference. First operand 1047 states and 2611 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:11,596 INFO L93 Difference]: Finished difference Result 1329 states and 3316 transitions. [2022-01-18 13:26:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:26:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:11,598 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 13:26:11,598 INFO L226 Difference]: Without dead ends: 1199 [2022-01-18 13:26:11,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=229, Invalid=2321, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:26:11,599 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 337 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:11,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2524 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:11,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-01-18 13:26:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1087. [2022-01-18 13:26:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.498158379373849) internal successors, (2713), 1086 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-01-18 13:26:11,608 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-01-18 13:26:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:11,608 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-01-18 13:26:11,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-01-18 13:26:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:11,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:11,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:11,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-18 13:26:11,610 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash 667677482, now seen corresponding path program 106 times [2022-01-18 13:26:11,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:11,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597603767] [2022-01-18 13:26:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:11,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:11,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:11,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597603767] [2022-01-18 13:26:11,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597603767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:11,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:11,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:11,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475755955] [2022-01-18 13:26:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:11,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:11,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:11,885 INFO L87 Difference]: Start difference. First operand 1087 states and 2713 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:12,881 INFO L93 Difference]: Finished difference Result 1320 states and 3285 transitions. [2022-01-18 13:26:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:26:12,882 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:12,883 INFO L225 Difference]: With dead ends: 1320 [2022-01-18 13:26:12,883 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 13:26:12,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=2222, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:26:12,884 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 264 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:12,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2733 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 13:26:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1091. [2022-01-18 13:26:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4954128440366974) internal successors, (2720), 1090 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-01-18 13:26:12,893 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-01-18 13:26:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:12,893 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-01-18 13:26:12,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-01-18 13:26:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:12,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:12,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:12,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-18 13:26:12,895 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1381914760, now seen corresponding path program 107 times [2022-01-18 13:26:12,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:12,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320573002] [2022-01-18 13:26:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:12,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:13,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320573002] [2022-01-18 13:26:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320573002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:13,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:13,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:13,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282934504] [2022-01-18 13:26:13,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:13,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:13,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:13,164 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:14,178 INFO L93 Difference]: Finished difference Result 1303 states and 3236 transitions. [2022-01-18 13:26:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:26:14,179 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:14,180 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 13:26:14,180 INFO L226 Difference]: Without dead ends: 1190 [2022-01-18 13:26:14,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=2222, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:26:14,181 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 293 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:14,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2654 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-01-18 13:26:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1079. [2022-01-18 13:26:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4925788497217067) internal successors, (2687), 1078 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-01-18 13:26:14,191 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-01-18 13:26:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:14,191 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-01-18 13:26:14,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-01-18 13:26:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:14,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:14,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:14,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-18 13:26:14,192 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1707362986, now seen corresponding path program 108 times [2022-01-18 13:26:14,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:14,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668301926] [2022-01-18 13:26:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:14,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:14,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:14,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668301926] [2022-01-18 13:26:14,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668301926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:14,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:14,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:14,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747215865] [2022-01-18 13:26:14,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:14,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:14,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:14,476 INFO L87 Difference]: Start difference. First operand 1079 states and 2687 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:15,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:15,398 INFO L93 Difference]: Finished difference Result 1317 states and 3267 transitions. [2022-01-18 13:26:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:26:15,399 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:15,400 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 13:26:15,400 INFO L226 Difference]: Without dead ends: 1167 [2022-01-18 13:26:15,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:26:15,401 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 294 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:15,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2552 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:15,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-01-18 13:26:15,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1075. [2022-01-18 13:26:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:26:15,410 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:26:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:15,410 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:26:15,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:26:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:15,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:15,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:15,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-18 13:26:15,412 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:15,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:15,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1726021976, now seen corresponding path program 109 times [2022-01-18 13:26:15,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:15,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801746133] [2022-01-18 13:26:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:15,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:15,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:15,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801746133] [2022-01-18 13:26:15,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801746133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:15,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:15,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:15,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365784793] [2022-01-18 13:26:15,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:15,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:15,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:15,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:15,667 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:16,650 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-01-18 13:26:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:26:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:16,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:16,652 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 13:26:16,652 INFO L226 Difference]: Without dead ends: 1200 [2022-01-18 13:26:16,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1781, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:26:16,652 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 270 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:16,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2428 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:26:16,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-01-18 13:26:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1099. [2022-01-18 13:26:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:26:16,662 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:26:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:16,662 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:26:16,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:26:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:16,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:16,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:16,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-18 13:26:16,663 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:16,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:16,663 INFO L85 PathProgramCache]: Analyzing trace with hash -409489084, now seen corresponding path program 110 times [2022-01-18 13:26:16,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:16,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592746503] [2022-01-18 13:26:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:16,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:16,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:16,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592746503] [2022-01-18 13:26:16,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592746503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:16,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:16,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:16,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300600606] [2022-01-18 13:26:16,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:16,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:16,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:16,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:16,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:16,963 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:17,809 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-01-18 13:26:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:26:17,810 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:17,811 INFO L225 Difference]: With dead ends: 1266 [2022-01-18 13:26:17,811 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 13:26:17,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:26:17,812 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 292 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:17,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2389 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 13:26:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-01-18 13:26:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.493333333333333) internal successors, (2618), 1050 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2618 transitions. [2022-01-18 13:26:17,821 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2618 transitions. Word has length 79 [2022-01-18 13:26:17,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:17,821 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2618 transitions. [2022-01-18 13:26:17,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2618 transitions. [2022-01-18 13:26:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:17,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:17,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:17,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-18 13:26:17,822 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash 924168038, now seen corresponding path program 111 times [2022-01-18 13:26:17,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:17,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913400367] [2022-01-18 13:26:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:17,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:18,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:18,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913400367] [2022-01-18 13:26:18,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913400367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:18,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:18,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:18,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53766292] [2022-01-18 13:26:18,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:18,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:18,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:18,086 INFO L87 Difference]: Start difference. First operand 1051 states and 2618 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:18,891 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-01-18 13:26:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:26:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:18,892 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 13:26:18,893 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 13:26:18,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:26:18,893 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 291 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:18,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2196 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 13:26:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-01-18 13:26:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-01-18 13:26:18,902 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-01-18 13:26:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:18,903 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-01-18 13:26:18,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-01-18 13:26:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:18,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:18,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:18,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-18 13:26:18,904 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:18,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash 70776872, now seen corresponding path program 112 times [2022-01-18 13:26:18,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:18,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031511397] [2022-01-18 13:26:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:18,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:19,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:19,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031511397] [2022-01-18 13:26:19,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031511397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:19,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:19,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:19,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008275836] [2022-01-18 13:26:19,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:19,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:19,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:19,174 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:19,986 INFO L93 Difference]: Finished difference Result 1272 states and 3149 transitions. [2022-01-18 13:26:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:26:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:19,988 INFO L225 Difference]: With dead ends: 1272 [2022-01-18 13:26:19,988 INFO L226 Difference]: Without dead ends: 1174 [2022-01-18 13:26:19,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:26:19,989 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 296 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:19,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2221 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-01-18 13:26:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1087. [2022-01-18 13:26:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.490791896869245) internal successors, (2705), 1086 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:20,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-01-18 13:26:20,001 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-01-18 13:26:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:20,001 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-01-18 13:26:20,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-01-18 13:26:20,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:20,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:20,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:20,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-18 13:26:20,002 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash 785014150, now seen corresponding path program 113 times [2022-01-18 13:26:20,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:20,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405910842] [2022-01-18 13:26:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:20,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:20,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:20,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405910842] [2022-01-18 13:26:20,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405910842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:20,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:20,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:20,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118383033] [2022-01-18 13:26:20,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:20,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:20,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:20,278 INFO L87 Difference]: Start difference. First operand 1087 states and 2705 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:21,120 INFO L93 Difference]: Finished difference Result 1240 states and 3065 transitions. [2022-01-18 13:26:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:26:21,120 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:21,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:21,122 INFO L225 Difference]: With dead ends: 1240 [2022-01-18 13:26:21,122 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 13:26:21,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:26:21,122 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 262 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:21,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2357 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 13:26:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-01-18 13:26:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:26:21,131 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:26:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:21,132 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:26:21,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:26:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:21,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:21,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:21,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-18 13:26:21,133 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1343972742, now seen corresponding path program 114 times [2022-01-18 13:26:21,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:21,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772602198] [2022-01-18 13:26:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:21,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:21,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:21,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772602198] [2022-01-18 13:26:21,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772602198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:21,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:21,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:21,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408648173] [2022-01-18 13:26:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:21,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:21,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:21,392 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:22,504 INFO L93 Difference]: Finished difference Result 1290 states and 3190 transitions. [2022-01-18 13:26:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:26:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:22,506 INFO L225 Difference]: With dead ends: 1290 [2022-01-18 13:26:22,506 INFO L226 Difference]: Without dead ends: 1192 [2022-01-18 13:26:22,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:26:22,507 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 299 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:22,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2499 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:26:22,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-01-18 13:26:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1099. [2022-01-18 13:26:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:26:22,516 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:26:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:22,516 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:26:22,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:26:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:22,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:22,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:22,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-18 13:26:22,518 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:22,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:22,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1634461662, now seen corresponding path program 115 times [2022-01-18 13:26:22,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:22,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537645163] [2022-01-18 13:26:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:22,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:22,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:22,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537645163] [2022-01-18 13:26:22,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537645163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:22,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:22,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:22,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031419139] [2022-01-18 13:26:22,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:22,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:22,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:22,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:22,759 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:23,573 INFO L93 Difference]: Finished difference Result 1258 states and 3102 transitions. [2022-01-18 13:26:23,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:26:23,573 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:23,575 INFO L225 Difference]: With dead ends: 1258 [2022-01-18 13:26:23,575 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 13:26:23,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:26:23,575 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 276 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:23,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2467 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 13:26:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1059. [2022-01-18 13:26:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 13:26:23,584 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 13:26:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:23,584 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 13:26:23,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:23,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 13:26:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:23,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:23,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:23,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-18 13:26:23,585 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:23,585 INFO L85 PathProgramCache]: Analyzing trace with hash -780370554, now seen corresponding path program 116 times [2022-01-18 13:26:23,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:23,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226738365] [2022-01-18 13:26:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:23,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:23,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:23,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226738365] [2022-01-18 13:26:23,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226738365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:23,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:23,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:23,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819317178] [2022-01-18 13:26:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:23,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:23,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:23,852 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:26,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:26:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:26,891 INFO L93 Difference]: Finished difference Result 1389 states and 3402 transitions. [2022-01-18 13:26:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:26:26,891 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:26,893 INFO L225 Difference]: With dead ends: 1389 [2022-01-18 13:26:26,893 INFO L226 Difference]: Without dead ends: 1291 [2022-01-18 13:26:26,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:26:26,893 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 360 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:26,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2521 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 959 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 13:26:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-01-18 13:26:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1075. [2022-01-18 13:26:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4878957169459963) internal successors, (2672), 1074 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:26,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2672 transitions. [2022-01-18 13:26:26,903 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2672 transitions. Word has length 79 [2022-01-18 13:26:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:26,903 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2672 transitions. [2022-01-18 13:26:26,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2672 transitions. [2022-01-18 13:26:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:26,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:26,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:26,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-18 13:26:26,904 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash -66133276, now seen corresponding path program 117 times [2022-01-18 13:26:26,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:26,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067349534] [2022-01-18 13:26:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:26,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:27,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:27,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067349534] [2022-01-18 13:26:27,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067349534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:27,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:27,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:27,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595360456] [2022-01-18 13:26:27,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:27,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:27,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:27,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:27,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:27,179 INFO L87 Difference]: Start difference. First operand 1075 states and 2672 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:28,159 INFO L93 Difference]: Finished difference Result 1281 states and 3159 transitions. [2022-01-18 13:26:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:26:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:28,160 INFO L225 Difference]: With dead ends: 1281 [2022-01-18 13:26:28,160 INFO L226 Difference]: Without dead ends: 1130 [2022-01-18 13:26:28,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:26:28,161 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 311 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:28,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2486 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2022-01-18 13:26:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1063. [2022-01-18 13:26:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4849340866290017) internal successors, (2639), 1062 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-01-18 13:26:28,170 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-01-18 13:26:28,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:28,170 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-01-18 13:26:28,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-01-18 13:26:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:28,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:28,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:28,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-18 13:26:28,171 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:28,171 INFO L85 PathProgramCache]: Analyzing trace with hash -594352692, now seen corresponding path program 118 times [2022-01-18 13:26:28,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:28,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708361549] [2022-01-18 13:26:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:28,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:28,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:28,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708361549] [2022-01-18 13:26:28,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708361549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:28,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:28,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:28,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65932401] [2022-01-18 13:26:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:28,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:28,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:28,429 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:29,259 INFO L93 Difference]: Finished difference Result 1253 states and 3082 transitions. [2022-01-18 13:26:29,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:26:29,259 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:29,260 INFO L225 Difference]: With dead ends: 1253 [2022-01-18 13:26:29,260 INFO L226 Difference]: Without dead ends: 1071 [2022-01-18 13:26:29,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:26:29,261 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 263 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:29,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2583 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-01-18 13:26:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1039. [2022-01-18 13:26:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.494219653179191) internal successors, (2589), 1038 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2589 transitions. [2022-01-18 13:26:29,270 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2589 transitions. Word has length 79 [2022-01-18 13:26:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:29,270 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2589 transitions. [2022-01-18 13:26:29,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2589 transitions. [2022-01-18 13:26:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:29,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:29,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:29,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-18 13:26:29,272 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:29,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash -594705146, now seen corresponding path program 119 times [2022-01-18 13:26:29,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:29,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575410795] [2022-01-18 13:26:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:29,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:29,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575410795] [2022-01-18 13:26:29,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575410795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:29,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:29,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:29,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008615482] [2022-01-18 13:26:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:29,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:29,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:29,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:29,549 INFO L87 Difference]: Start difference. First operand 1039 states and 2589 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:30,994 INFO L93 Difference]: Finished difference Result 1325 states and 3305 transitions. [2022-01-18 13:26:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:26:30,994 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:30,996 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 13:26:30,996 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 13:26:30,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:26:30,996 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 340 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:30,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2447 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:26:30,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 13:26:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1099. [2022-01-18 13:26:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5009107468123863) internal successors, (2746), 1098 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:31,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-01-18 13:26:31,007 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-01-18 13:26:31,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:31,007 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-01-18 13:26:31,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-01-18 13:26:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:31,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:31,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:31,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-18 13:26:31,009 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1448096312, now seen corresponding path program 120 times [2022-01-18 13:26:31,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:31,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574224405] [2022-01-18 13:26:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:31,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:31,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:31,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574224405] [2022-01-18 13:26:31,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574224405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:31,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:31,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:31,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133545892] [2022-01-18 13:26:31,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:31,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:31,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:31,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:31,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:31,293 INFO L87 Difference]: Start difference. First operand 1099 states and 2746 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:32,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:32,908 INFO L93 Difference]: Finished difference Result 1324 states and 3296 transitions. [2022-01-18 13:26:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:26:32,908 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:32,909 INFO L225 Difference]: With dead ends: 1324 [2022-01-18 13:26:32,909 INFO L226 Difference]: Without dead ends: 1226 [2022-01-18 13:26:32,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:26:32,910 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 323 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:32,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2550 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:26:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-01-18 13:26:32,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1103. [2022-01-18 13:26:32,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4981851179673322) internal successors, (2753), 1102 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2753 transitions. [2022-01-18 13:26:32,920 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2753 transitions. Word has length 79 [2022-01-18 13:26:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:32,920 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2753 transitions. [2022-01-18 13:26:32,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2753 transitions. [2022-01-18 13:26:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:32,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:32,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:32,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-18 13:26:32,922 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:32,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash -733859034, now seen corresponding path program 121 times [2022-01-18 13:26:32,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:32,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218220581] [2022-01-18 13:26:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:32,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:33,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:33,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218220581] [2022-01-18 13:26:33,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218220581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:33,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:33,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:33,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907599358] [2022-01-18 13:26:33,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:33,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:33,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:33,194 INFO L87 Difference]: Start difference. First operand 1103 states and 2753 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:34,200 INFO L93 Difference]: Finished difference Result 1307 states and 3247 transitions. [2022-01-18 13:26:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:26:34,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:34,201 INFO L225 Difference]: With dead ends: 1307 [2022-01-18 13:26:34,201 INFO L226 Difference]: Without dead ends: 1194 [2022-01-18 13:26:34,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:26:34,202 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 324 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:34,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2599 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-01-18 13:26:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1091. [2022-01-18 13:26:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4954128440366974) internal successors, (2720), 1090 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-01-18 13:26:34,211 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-01-18 13:26:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:34,211 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-01-18 13:26:34,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-01-18 13:26:34,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:34,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:34,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:34,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-18 13:26:34,213 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:34,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:34,213 INFO L85 PathProgramCache]: Analyzing trace with hash -408410808, now seen corresponding path program 122 times [2022-01-18 13:26:34,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:34,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338887978] [2022-01-18 13:26:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:34,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:34,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:34,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338887978] [2022-01-18 13:26:34,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338887978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:34,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:34,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:34,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362848312] [2022-01-18 13:26:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:34,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:34,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:34,506 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:35,509 INFO L93 Difference]: Finished difference Result 1301 states and 3227 transitions. [2022-01-18 13:26:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:26:35,509 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:35,510 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 13:26:35,510 INFO L226 Difference]: Without dead ends: 1151 [2022-01-18 13:26:35,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:26:35,511 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 265 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:35,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 2694 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:26:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-01-18 13:26:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1087. [2022-01-18 13:26:35,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.494475138121547) internal successors, (2709), 1086 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:35,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-01-18 13:26:35,521 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-01-18 13:26:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:35,521 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-01-18 13:26:35,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:35,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-01-18 13:26:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:35,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:35,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:35,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-18 13:26:35,522 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:35,522 INFO L85 PathProgramCache]: Analyzing trace with hash 453171526, now seen corresponding path program 123 times [2022-01-18 13:26:35,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:35,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24633030] [2022-01-18 13:26:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:35,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:35,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24633030] [2022-01-18 13:26:35,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24633030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:35,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:35,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:35,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554386182] [2022-01-18 13:26:35,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:35,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:35,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:35,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:35,796 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:36,964 INFO L93 Difference]: Finished difference Result 1306 states and 3234 transitions. [2022-01-18 13:26:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:26:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:36,965 INFO L225 Difference]: With dead ends: 1306 [2022-01-18 13:26:36,966 INFO L226 Difference]: Without dead ends: 1208 [2022-01-18 13:26:36,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1861, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:26:36,966 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 275 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:36,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2598 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:26:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-01-18 13:26:36,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1111. [2022-01-18 13:26:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.492792792792793) internal successors, (2767), 1110 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-01-18 13:26:36,975 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-01-18 13:26:36,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:36,976 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-01-18 13:26:36,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-01-18 13:26:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:36,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:36,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:36,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-18 13:26:36,977 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:36,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1769704418, now seen corresponding path program 124 times [2022-01-18 13:26:36,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:36,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146711774] [2022-01-18 13:26:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:36,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:37,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:37,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146711774] [2022-01-18 13:26:37,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146711774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:37,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:37,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:37,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72373011] [2022-01-18 13:26:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:37,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:37,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:37,215 INFO L87 Difference]: Start difference. First operand 1111 states and 2767 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:38,118 INFO L93 Difference]: Finished difference Result 1274 states and 3146 transitions. [2022-01-18 13:26:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:26:38,118 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:38,120 INFO L225 Difference]: With dead ends: 1274 [2022-01-18 13:26:38,120 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 13:26:38,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:26:38,120 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 252 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:38,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 2542 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 13:26:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-01-18 13:26:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.492467043314501) internal successors, (2647), 1062 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2647 transitions. [2022-01-18 13:26:38,130 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2647 transitions. Word has length 79 [2022-01-18 13:26:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:38,130 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2647 transitions. [2022-01-18 13:26:38,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2647 transitions. [2022-01-18 13:26:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:38,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:38,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:38,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-18 13:26:38,132 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash -253094584, now seen corresponding path program 125 times [2022-01-18 13:26:38,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:38,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708433736] [2022-01-18 13:26:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:38,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:38,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:38,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708433736] [2022-01-18 13:26:38,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708433736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:38,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:38,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:38,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083655105] [2022-01-18 13:26:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:38,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:38,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:38,388 INFO L87 Difference]: Start difference. First operand 1063 states and 2647 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:39,226 INFO L93 Difference]: Finished difference Result 1269 states and 3147 transitions. [2022-01-18 13:26:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:26:39,227 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:39,228 INFO L225 Difference]: With dead ends: 1269 [2022-01-18 13:26:39,228 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 13:26:39,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:26:39,229 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 240 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:39,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 2492 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 13:26:39,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1087. [2022-01-18 13:26:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.494475138121547) internal successors, (2709), 1086 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-01-18 13:26:39,238 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-01-18 13:26:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:39,238 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-01-18 13:26:39,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-01-18 13:26:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:39,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:39,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:39,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-18 13:26:39,239 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash -619989014, now seen corresponding path program 126 times [2022-01-18 13:26:39,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:39,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908820840] [2022-01-18 13:26:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:39,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:39,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:39,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908820840] [2022-01-18 13:26:39,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908820840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:39,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:39,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:39,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736203504] [2022-01-18 13:26:39,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:39,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:39,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:39,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:39,494 INFO L87 Difference]: Start difference. First operand 1087 states and 2709 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:40,363 INFO L93 Difference]: Finished difference Result 1280 states and 3171 transitions. [2022-01-18 13:26:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:26:40,364 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:40,365 INFO L225 Difference]: With dead ends: 1280 [2022-01-18 13:26:40,365 INFO L226 Difference]: Without dead ends: 1182 [2022-01-18 13:26:40,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:26:40,366 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 249 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:40,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 2341 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-18 13:26:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1091. [2022-01-18 13:26:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.491743119266055) internal successors, (2716), 1090 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2716 transitions. [2022-01-18 13:26:40,375 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2716 transitions. Word has length 79 [2022-01-18 13:26:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:40,375 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2716 transitions. [2022-01-18 13:26:40,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2716 transitions. [2022-01-18 13:26:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:40,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:40,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:40,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-18 13:26:40,377 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:40,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash 94248264, now seen corresponding path program 127 times [2022-01-18 13:26:40,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:40,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872958920] [2022-01-18 13:26:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:40,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:40,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:40,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872958920] [2022-01-18 13:26:40,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872958920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:40,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:40,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:40,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651282428] [2022-01-18 13:26:40,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:40,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:40,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:40,646 INFO L87 Difference]: Start difference. First operand 1091 states and 2716 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:41,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:41,490 INFO L93 Difference]: Finished difference Result 1248 states and 3087 transitions. [2022-01-18 13:26:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:26:41,490 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:41,492 INFO L225 Difference]: With dead ends: 1248 [2022-01-18 13:26:41,492 INFO L226 Difference]: Without dead ends: 1139 [2022-01-18 13:26:41,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:26:41,492 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 283 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:41,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2288 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-18 13:26:41,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1083. [2022-01-18 13:26:41,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-01-18 13:26:41,502 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-01-18 13:26:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:41,502 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-01-18 13:26:41,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-01-18 13:26:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:41,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:41,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:41,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-18 13:26:41,503 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 564939078, now seen corresponding path program 128 times [2022-01-18 13:26:41,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:41,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827684062] [2022-01-18 13:26:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:41,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:41,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:41,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827684062] [2022-01-18 13:26:41,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827684062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:41,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:41,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:41,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135639265] [2022-01-18 13:26:41,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:41,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:41,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:41,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:41,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:41,758 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:42,770 INFO L93 Difference]: Finished difference Result 1302 states and 3223 transitions. [2022-01-18 13:26:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:26:42,771 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:42,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:42,772 INFO L225 Difference]: With dead ends: 1302 [2022-01-18 13:26:42,772 INFO L226 Difference]: Without dead ends: 1204 [2022-01-18 13:26:42,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:26:42,773 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 276 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:42,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2420 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:26:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-01-18 13:26:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1107. [2022-01-18 13:26:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.491862567811935) internal successors, (2756), 1106 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-01-18 13:26:42,783 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-01-18 13:26:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:42,783 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-01-18 13:26:42,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-01-18 13:26:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:42,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:42,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:42,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-18 13:26:42,785 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1881471970, now seen corresponding path program 129 times [2022-01-18 13:26:42,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:42,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828261641] [2022-01-18 13:26:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:42,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:43,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:43,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828261641] [2022-01-18 13:26:43,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828261641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:43,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:43,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:43,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253894607] [2022-01-18 13:26:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:43,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:43,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:43,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:43,028 INFO L87 Difference]: Start difference. First operand 1107 states and 2756 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:43,860 INFO L93 Difference]: Finished difference Result 1270 states and 3135 transitions. [2022-01-18 13:26:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:26:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:43,861 INFO L225 Difference]: With dead ends: 1270 [2022-01-18 13:26:43,862 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 13:26:43,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:26:43,862 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 298 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:43,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2269 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:43,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 13:26:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-01-18 13:26:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:26:43,871 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:26:43,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:43,872 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:26:43,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:43,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:26:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:43,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:43,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:43,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-18 13:26:43,873 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1398822948, now seen corresponding path program 130 times [2022-01-18 13:26:43,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:43,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439901961] [2022-01-18 13:26:43,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:43,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:44,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439901961] [2022-01-18 13:26:44,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439901961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:44,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:44,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:44,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619589025] [2022-01-18 13:26:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:44,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:44,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:44,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:44,162 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:45,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:45,809 INFO L93 Difference]: Finished difference Result 1345 states and 3331 transitions. [2022-01-18 13:26:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:26:45,809 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:45,811 INFO L225 Difference]: With dead ends: 1345 [2022-01-18 13:26:45,811 INFO L226 Difference]: Without dead ends: 1247 [2022-01-18 13:26:45,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:26:45,811 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 308 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:45,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 2827 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:26:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-01-18 13:26:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1103. [2022-01-18 13:26:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4909255898366607) internal successors, (2745), 1102 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-01-18 13:26:45,821 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-01-18 13:26:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:45,822 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-01-18 13:26:45,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-01-18 13:26:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:45,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:45,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:45,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-18 13:26:45,823 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1579611456, now seen corresponding path program 131 times [2022-01-18 13:26:45,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:45,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651811153] [2022-01-18 13:26:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:45,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:46,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:46,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651811153] [2022-01-18 13:26:46,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651811153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:46,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:46,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:26:46,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732863575] [2022-01-18 13:26:46,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:46,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:26:46,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:26:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:26:46,091 INFO L87 Difference]: Start difference. First operand 1103 states and 2745 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:47,148 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-01-18 13:26:47,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:26:47,149 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:47,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:47,150 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 13:26:47,150 INFO L226 Difference]: Without dead ends: 1166 [2022-01-18 13:26:47,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:26:47,151 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 334 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:47,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2681 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-18 13:26:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1079. [2022-01-18 13:26:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4888682745825603) internal successors, (2683), 1078 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-01-18 13:26:47,160 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-01-18 13:26:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:47,160 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-01-18 13:26:47,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-01-18 13:26:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:47,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:47,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:47,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-18 13:26:47,161 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:47,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1584840810, now seen corresponding path program 132 times [2022-01-18 13:26:47,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:47,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856201018] [2022-01-18 13:26:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:47,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:47,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:47,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856201018] [2022-01-18 13:26:47,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856201018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:47,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:47,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:47,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380757726] [2022-01-18 13:26:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:47,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:47,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:47,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:47,417 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:48,283 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-01-18 13:26:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:26:48,283 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:48,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:48,285 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 13:26:48,285 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 13:26:48,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:26:48,285 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 300 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:48,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2597 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 13:26:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-01-18 13:26:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 13:26:48,294 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 13:26:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:48,294 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 13:26:48,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:48,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 13:26:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:48,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:48,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:48,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-18 13:26:48,296 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:48,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2026530828, now seen corresponding path program 133 times [2022-01-18 13:26:48,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:48,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222701115] [2022-01-18 13:26:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:48,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:48,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:48,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222701115] [2022-01-18 13:26:48,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222701115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:48,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:48,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:48,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366822205] [2022-01-18 13:26:48,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:48,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:48,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:48,550 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:49,968 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-01-18 13:26:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:26:49,968 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:49,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:49,970 INFO L225 Difference]: With dead ends: 1327 [2022-01-18 13:26:49,970 INFO L226 Difference]: Without dead ends: 1229 [2022-01-18 13:26:49,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:26:49,970 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 261 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:49,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2642 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:26:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-01-18 13:26:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1111. [2022-01-18 13:26:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.492792792792793) internal successors, (2767), 1110 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-01-18 13:26:49,986 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-01-18 13:26:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:49,986 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-01-18 13:26:49,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-01-18 13:26:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:49,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:49,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:49,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-18 13:26:49,987 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:49,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash -951903576, now seen corresponding path program 134 times [2022-01-18 13:26:49,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:49,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582548270] [2022-01-18 13:26:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:49,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:50,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:50,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582548270] [2022-01-18 13:26:50,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582548270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:50,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:50,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:26:50,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301373496] [2022-01-18 13:26:50,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:50,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:26:50,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:26:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:26:50,244 INFO L87 Difference]: Start difference. First operand 1111 states and 2767 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:51,195 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-01-18 13:26:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:26:51,195 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:51,197 INFO L225 Difference]: With dead ends: 1295 [2022-01-18 13:26:51,197 INFO L226 Difference]: Without dead ends: 1160 [2022-01-18 13:26:51,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:26:51,197 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 300 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:51,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2489 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:26:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-01-18 13:26:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1087. [2022-01-18 13:26:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 13:26:51,207 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 13:26:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:51,207 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 13:26:51,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 13:26:51,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:51,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:51,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:51,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-18 13:26:51,208 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1975058156, now seen corresponding path program 135 times [2022-01-18 13:26:51,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:51,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680324667] [2022-01-18 13:26:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:51,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:51,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680324667] [2022-01-18 13:26:51,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680324667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:51,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:51,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 13:26:51,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134029884] [2022-01-18 13:26:51,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:51,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:26:51,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:51,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:26:51,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:26:51,458 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:52,210 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-01-18 13:26:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 13:26:52,210 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:52,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:52,211 INFO L225 Difference]: With dead ends: 1271 [2022-01-18 13:26:52,211 INFO L226 Difference]: Without dead ends: 1051 [2022-01-18 13:26:52,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:26:52,212 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 248 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:52,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 2524 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:26:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-01-18 13:26:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1023. [2022-01-18 13:26:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 2.4902152641878668) internal successors, (2545), 1022 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2545 transitions. [2022-01-18 13:26:52,220 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2545 transitions. Word has length 79 [2022-01-18 13:26:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:52,221 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2545 transitions. [2022-01-18 13:26:52,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2545 transitions. [2022-01-18 13:26:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:52,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:52,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:52,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-18 13:26:52,222 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1998707450, now seen corresponding path program 136 times [2022-01-18 13:26:52,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:52,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929656768] [2022-01-18 13:26:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:52,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:52,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:52,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929656768] [2022-01-18 13:26:52,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929656768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:52,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:52,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:26:52,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833195010] [2022-01-18 13:26:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:52,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:26:52,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:52,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:26:52,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:26:52,511 INFO L87 Difference]: Start difference. First operand 1023 states and 2545 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:53,868 INFO L93 Difference]: Finished difference Result 1353 states and 3382 transitions. [2022-01-18 13:26:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:26:53,869 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:53,870 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:26:53,870 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 13:26:53,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:26:53,871 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 369 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:53,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2780 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:26:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 13:26:53,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1087. [2022-01-18 13:26:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.498158379373849) internal successors, (2713), 1086 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-01-18 13:26:53,880 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-01-18 13:26:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:53,880 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-01-18 13:26:53,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-01-18 13:26:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:53,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:53,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:53,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-18 13:26:53,882 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1442868680, now seen corresponding path program 137 times [2022-01-18 13:26:53,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:53,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404572198] [2022-01-18 13:26:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:53,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:54,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:54,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404572198] [2022-01-18 13:26:54,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404572198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:54,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:54,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:26:54,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840233112] [2022-01-18 13:26:54,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:54,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:26:54,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:54,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:26:54,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:26:54,173 INFO L87 Difference]: Start difference. First operand 1087 states and 2713 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:56,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:26:57,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:26:57,607 INFO L93 Difference]: Finished difference Result 1388 states and 3464 transitions. [2022-01-18 13:26:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:26:57,607 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:26:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:26:57,609 INFO L225 Difference]: With dead ends: 1388 [2022-01-18 13:26:57,609 INFO L226 Difference]: Without dead ends: 1290 [2022-01-18 13:26:57,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 13:26:57,610 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 325 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:26:57,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 3151 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1240 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 13:26:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-01-18 13:26:57,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1115. [2022-01-18 13:26:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4937163375224416) internal successors, (2778), 1114 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2778 transitions. [2022-01-18 13:26:57,619 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2778 transitions. Word has length 79 [2022-01-18 13:26:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:26:57,620 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2778 transitions. [2022-01-18 13:26:57,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:26:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2778 transitions. [2022-01-18 13:26:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:26:57,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:26:57,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:26:57,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-18 13:26:57,621 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:26:57,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:26:57,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2137861338, now seen corresponding path program 138 times [2022-01-18 13:26:57,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:26:57,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810313530] [2022-01-18 13:26:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:26:57,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:26:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:26:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:26:57,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:26:57,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810313530] [2022-01-18 13:26:57,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810313530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:26:57,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:26:57,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:26:57,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11050584] [2022-01-18 13:26:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:26:57,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:26:57,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:26:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:26:57,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:26:57,904 INFO L87 Difference]: Start difference. First operand 1115 states and 2778 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:00,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:27:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:01,124 INFO L93 Difference]: Finished difference Result 1359 states and 3382 transitions. [2022-01-18 13:27:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:27:01,125 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:01,126 INFO L225 Difference]: With dead ends: 1359 [2022-01-18 13:27:01,126 INFO L226 Difference]: Without dead ends: 1246 [2022-01-18 13:27:01,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=2923, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:27:01,127 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 345 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:01,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2808 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1124 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:27:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-01-18 13:27:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1103. [2022-01-18 13:27:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4909255898366607) internal successors, (2745), 1102 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-01-18 13:27:01,137 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-01-18 13:27:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:01,137 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-01-18 13:27:01,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-01-18 13:27:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:01,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:01,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:01,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-18 13:27:01,138 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:01,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1812413112, now seen corresponding path program 139 times [2022-01-18 13:27:01,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:01,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487192343] [2022-01-18 13:27:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:01,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:01,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:01,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487192343] [2022-01-18 13:27:01,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487192343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:01,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:01,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:01,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836350536] [2022-01-18 13:27:01,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:01,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:01,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:01,423 INFO L87 Difference]: Start difference. First operand 1103 states and 2745 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:04,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:27:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:04,920 INFO L93 Difference]: Finished difference Result 1377 states and 3424 transitions. [2022-01-18 13:27:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:27:04,920 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:04,922 INFO L225 Difference]: With dead ends: 1377 [2022-01-18 13:27:04,922 INFO L226 Difference]: Without dead ends: 1227 [2022-01-18 13:27:04,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=3042, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:27:04,923 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 375 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:04,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 2853 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1119 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 13:27:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-01-18 13:27:04,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1099. [2022-01-18 13:27:04,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:27:04,932 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:27:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:04,932 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:27:04,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:04,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:27:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:04,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:04,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:04,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-18 13:27:04,934 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:04,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash -950830778, now seen corresponding path program 140 times [2022-01-18 13:27:04,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:04,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445159309] [2022-01-18 13:27:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:04,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:05,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:05,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445159309] [2022-01-18 13:27:05,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445159309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:05,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:05,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:05,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448926796] [2022-01-18 13:27:05,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:05,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:05,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:05,218 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:06,638 INFO L93 Difference]: Finished difference Result 1362 states and 3380 transitions. [2022-01-18 13:27:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:27:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:06,640 INFO L225 Difference]: With dead ends: 1362 [2022-01-18 13:27:06,640 INFO L226 Difference]: Without dead ends: 1264 [2022-01-18 13:27:06,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=2412, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:27:06,640 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 300 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:06,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2688 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:27:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-01-18 13:27:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1123. [2022-01-18 13:27:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4884135472370765) internal successors, (2792), 1122 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2792 transitions. [2022-01-18 13:27:06,650 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2792 transitions. Word has length 79 [2022-01-18 13:27:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:06,650 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2792 transitions. [2022-01-18 13:27:06,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2792 transitions. [2022-01-18 13:27:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:06,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:06,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:06,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-18 13:27:06,651 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:06,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash 365702114, now seen corresponding path program 141 times [2022-01-18 13:27:06,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:06,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625634208] [2022-01-18 13:27:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:06,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:06,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:06,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625634208] [2022-01-18 13:27:06,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625634208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:06,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:06,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:06,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499667630] [2022-01-18 13:27:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:06,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:06,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:06,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:06,899 INFO L87 Difference]: Start difference. First operand 1123 states and 2792 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:08,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:08,141 INFO L93 Difference]: Finished difference Result 1345 states and 3327 transitions. [2022-01-18 13:27:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:27:08,141 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:08,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:08,142 INFO L225 Difference]: With dead ends: 1345 [2022-01-18 13:27:08,142 INFO L226 Difference]: Without dead ends: 1186 [2022-01-18 13:27:08,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:27:08,143 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 322 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:08,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2660 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:27:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-18 13:27:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1075. [2022-01-18 13:27:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 13:27:08,153 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 13:27:08,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:08,153 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 13:27:08,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 13:27:08,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:08,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:08,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:08,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-18 13:27:08,154 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:08,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:08,154 INFO L85 PathProgramCache]: Analyzing trace with hash 845968070, now seen corresponding path program 142 times [2022-01-18 13:27:08,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:08,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616246282] [2022-01-18 13:27:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:08,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:08,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:08,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616246282] [2022-01-18 13:27:08,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616246282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:08,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:08,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:08,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464673350] [2022-01-18 13:27:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:08,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:08,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:08,430 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:09,474 INFO L93 Difference]: Finished difference Result 1332 states and 3306 transitions. [2022-01-18 13:27:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:27:09,475 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:09,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:09,476 INFO L225 Difference]: With dead ends: 1332 [2022-01-18 13:27:09,476 INFO L226 Difference]: Without dead ends: 1234 [2022-01-18 13:27:09,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=247, Invalid=2509, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:27:09,477 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 290 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:09,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2593 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-18 13:27:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1103. [2022-01-18 13:27:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4872958257713247) internal successors, (2741), 1102 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2741 transitions. [2022-01-18 13:27:09,487 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2741 transitions. Word has length 79 [2022-01-18 13:27:09,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:09,487 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2741 transitions. [2022-01-18 13:27:09,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:09,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2741 transitions. [2022-01-18 13:27:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:09,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:09,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:09,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-18 13:27:09,488 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:09,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1560205348, now seen corresponding path program 143 times [2022-01-18 13:27:09,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:09,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443705078] [2022-01-18 13:27:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:09,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:09,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:09,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443705078] [2022-01-18 13:27:09,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443705078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:09,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:09,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:09,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050108685] [2022-01-18 13:27:09,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:09,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:09,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:09,750 INFO L87 Difference]: Start difference. First operand 1103 states and 2741 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:10,780 INFO L93 Difference]: Finished difference Result 1315 states and 3257 transitions. [2022-01-18 13:27:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:27:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:10,782 INFO L225 Difference]: With dead ends: 1315 [2022-01-18 13:27:10,782 INFO L226 Difference]: Without dead ends: 1186 [2022-01-18 13:27:10,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=247, Invalid=2509, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:27:10,783 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 340 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:10,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2534 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-18 13:27:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1075. [2022-01-18 13:27:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:27:10,792 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:27:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:10,793 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:27:10,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:27:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:10,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:10,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:10,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-18 13:27:10,794 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:10,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1657096888, now seen corresponding path program 144 times [2022-01-18 13:27:10,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:10,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013242180] [2022-01-18 13:27:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:10,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:11,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:11,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013242180] [2022-01-18 13:27:11,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013242180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:11,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:11,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:11,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684823116] [2022-01-18 13:27:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:11,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:11,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:11,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:11,061 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:12,048 INFO L93 Difference]: Finished difference Result 1285 states and 3187 transitions. [2022-01-18 13:27:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:27:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:12,050 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 13:27:12,050 INFO L226 Difference]: Without dead ends: 1167 [2022-01-18 13:27:12,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=2138, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:27:12,051 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 264 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:12,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2723 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-01-18 13:27:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1071. [2022-01-18 13:27:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4906542056074765) internal successors, (2665), 1070 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-01-18 13:27:12,060 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-01-18 13:27:12,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:12,060 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-01-18 13:27:12,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:12,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-01-18 13:27:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:12,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:12,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:12,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-18 13:27:12,061 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:12,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash -839063226, now seen corresponding path program 145 times [2022-01-18 13:27:12,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:12,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342813839] [2022-01-18 13:27:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:12,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:12,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:12,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342813839] [2022-01-18 13:27:12,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342813839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:12,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:12,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:12,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304375810] [2022-01-18 13:27:12,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:12,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:12,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:12,329 INFO L87 Difference]: Start difference. First operand 1071 states and 2665 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:13,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:13,467 INFO L93 Difference]: Finished difference Result 1318 states and 3267 transitions. [2022-01-18 13:27:13,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:27:13,468 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:13,469 INFO L225 Difference]: With dead ends: 1318 [2022-01-18 13:27:13,469 INFO L226 Difference]: Without dead ends: 1220 [2022-01-18 13:27:13,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:27:13,470 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 322 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:13,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2512 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:27:13,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-01-18 13:27:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1095. [2022-01-18 13:27:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.489031078610603) internal successors, (2723), 1094 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-01-18 13:27:13,480 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-01-18 13:27:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:13,480 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-01-18 13:27:13,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-01-18 13:27:13,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:13,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:13,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:13,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-18 13:27:13,481 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash 477469666, now seen corresponding path program 146 times [2022-01-18 13:27:13,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:13,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921187197] [2022-01-18 13:27:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:13,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:13,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:13,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921187197] [2022-01-18 13:27:13,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921187197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:13,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:13,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:13,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621732527] [2022-01-18 13:27:13,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:13,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:13,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:13,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:13,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:13,743 INFO L87 Difference]: Start difference. First operand 1095 states and 2723 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:14,773 INFO L93 Difference]: Finished difference Result 1286 states and 3179 transitions. [2022-01-18 13:27:14,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:27:14,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:14,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:14,775 INFO L225 Difference]: With dead ends: 1286 [2022-01-18 13:27:14,775 INFO L226 Difference]: Without dead ends: 1143 [2022-01-18 13:27:14,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:27:14,775 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 298 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:14,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2740 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:14,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-01-18 13:27:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1063. [2022-01-18 13:27:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 13:27:14,785 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 13:27:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:14,785 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 13:27:14,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 13:27:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:14,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:14,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:14,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-18 13:27:14,786 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash -5179356, now seen corresponding path program 147 times [2022-01-18 13:27:14,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:14,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983066233] [2022-01-18 13:27:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:14,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:15,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983066233] [2022-01-18 13:27:15,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983066233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:15,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:15,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:15,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097392377] [2022-01-18 13:27:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:15,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:15,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:15,068 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:16,292 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-01-18 13:27:16,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:27:16,292 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:16,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:16,294 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 13:27:16,294 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 13:27:16,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:27:16,294 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 311 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:16,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 3047 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:27:16,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 13:27:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-01-18 13:27:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-01-18 13:27:16,304 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-01-18 13:27:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:16,304 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-01-18 13:27:16,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-01-18 13:27:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:16,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:16,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:16,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-18 13:27:16,306 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:16,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:16,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1311353536, now seen corresponding path program 148 times [2022-01-18 13:27:16,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:16,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102035752] [2022-01-18 13:27:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:16,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:16,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:16,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102035752] [2022-01-18 13:27:16,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102035752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:16,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:16,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:16,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075240338] [2022-01-18 13:27:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:16,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:16,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:16,580 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:17,816 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-01-18 13:27:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:27:17,816 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:17,818 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 13:27:17,818 INFO L226 Difference]: Without dead ends: 1182 [2022-01-18 13:27:17,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:27:17,818 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 335 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:17,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 2911 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:27:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-18 13:27:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-01-18 13:27:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4859287054409007) internal successors, (2650), 1066 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-01-18 13:27:17,827 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-01-18 13:27:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:17,828 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-01-18 13:27:17,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-01-18 13:27:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:17,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:17,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:17,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-18 13:27:17,829 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash 180838506, now seen corresponding path program 149 times [2022-01-18 13:27:17,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:17,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177330195] [2022-01-18 13:27:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:17,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:18,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:18,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177330195] [2022-01-18 13:27:18,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177330195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:18,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:18,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:18,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931876441] [2022-01-18 13:27:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:18,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:18,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:18,092 INFO L87 Difference]: Start difference. First operand 1067 states and 2650 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:19,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:19,071 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-01-18 13:27:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:27:19,071 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:19,073 INFO L225 Difference]: With dead ends: 1305 [2022-01-18 13:27:19,073 INFO L226 Difference]: Without dead ends: 1131 [2022-01-18 13:27:19,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:27:19,073 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 324 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:19,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2691 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-01-18 13:27:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-01-18 13:27:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 13:27:19,082 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 13:27:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:19,082 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 13:27:19,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:19,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 13:27:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:19,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:19,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:19,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-18 13:27:19,084 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:19,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:19,084 INFO L85 PathProgramCache]: Analyzing trace with hash 622528524, now seen corresponding path program 150 times [2022-01-18 13:27:19,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:19,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722239241] [2022-01-18 13:27:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:19,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:19,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:19,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722239241] [2022-01-18 13:27:19,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722239241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:19,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:19,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:19,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292817453] [2022-01-18 13:27:19,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:19,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:19,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:19,345 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:20,583 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-01-18 13:27:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:27:20,584 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:20,585 INFO L225 Difference]: With dead ends: 1339 [2022-01-18 13:27:20,585 INFO L226 Difference]: Without dead ends: 1241 [2022-01-18 13:27:20,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:27:20,586 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 298 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:20,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2734 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:27:20,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-01-18 13:27:20,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1099. [2022-01-18 13:27:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:27:20,596 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:27:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:20,596 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:27:20,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:27:20,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:20,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:20,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:20,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-18 13:27:20,597 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:20,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:20,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1939061416, now seen corresponding path program 151 times [2022-01-18 13:27:20,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:20,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551680031] [2022-01-18 13:27:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:20,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:20,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:20,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551680031] [2022-01-18 13:27:20,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551680031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:20,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:20,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:20,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932562629] [2022-01-18 13:27:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:20,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:20,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:20,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:20,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:20,843 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:21,883 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-01-18 13:27:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:27:21,884 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:21,885 INFO L225 Difference]: With dead ends: 1307 [2022-01-18 13:27:21,885 INFO L226 Difference]: Without dead ends: 1172 [2022-01-18 13:27:21,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=225, Invalid=2325, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:27:21,886 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 296 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:21,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2843 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-01-18 13:27:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2022-01-18 13:27:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 13:27:21,895 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 13:27:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:21,895 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 13:27:21,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 13:27:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:21,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:21,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:21,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-18 13:27:21,896 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash 571055852, now seen corresponding path program 152 times [2022-01-18 13:27:21,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132689066] [2022-01-18 13:27:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:21,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:22,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:22,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132689066] [2022-01-18 13:27:22,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132689066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:22,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:22,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:22,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166975399] [2022-01-18 13:27:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:22,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:22,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:22,145 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:23,006 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-01-18 13:27:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:27:23,006 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:23,007 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 13:27:23,008 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 13:27:23,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:27:23,008 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 283 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:23,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2474 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 13:27:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1027. [2022-01-18 13:27:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.487329434697856) internal successors, (2552), 1026 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2552 transitions. [2022-01-18 13:27:23,016 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2552 transitions. Word has length 79 [2022-01-18 13:27:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:23,017 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2552 transitions. [2022-01-18 13:27:23,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2552 transitions. [2022-01-18 13:27:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:23,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:23,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:23,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-18 13:27:23,018 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1880465684, now seen corresponding path program 153 times [2022-01-18 13:27:23,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:23,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723215112] [2022-01-18 13:27:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:23,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:23,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:23,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723215112] [2022-01-18 13:27:23,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723215112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:23,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:23,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:23,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294621750] [2022-01-18 13:27:23,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:23,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:23,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:23,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:23,270 INFO L87 Difference]: Start difference. First operand 1027 states and 2552 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:24,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:24,054 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-01-18 13:27:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:27:24,055 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:24,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:24,056 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 13:27:24,056 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 13:27:24,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:27:24,056 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 281 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:24,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2188 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:24,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 13:27:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-01-18 13:27:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-01-18 13:27:24,066 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-01-18 13:27:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:24,066 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-01-18 13:27:24,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-01-18 13:27:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:24,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:24,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:24,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-18 13:27:24,067 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1561110446, now seen corresponding path program 154 times [2022-01-18 13:27:24,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:24,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594332056] [2022-01-18 13:27:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:24,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:24,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:24,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594332056] [2022-01-18 13:27:24,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594332056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:24,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:24,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:24,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018449383] [2022-01-18 13:27:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:24,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:24,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:24,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:24,326 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:25,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:25,191 INFO L93 Difference]: Finished difference Result 1280 states and 3171 transitions. [2022-01-18 13:27:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:27:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:25,193 INFO L225 Difference]: With dead ends: 1280 [2022-01-18 13:27:25,193 INFO L226 Difference]: Without dead ends: 1182 [2022-01-18 13:27:25,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:27:25,193 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 287 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:25,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2381 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-18 13:27:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1087. [2022-01-18 13:27:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.490791896869245) internal successors, (2705), 1086 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-01-18 13:27:25,203 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-01-18 13:27:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:25,203 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-01-18 13:27:25,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-01-18 13:27:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:25,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:25,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:25,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-18 13:27:25,204 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2019619572, now seen corresponding path program 155 times [2022-01-18 13:27:25,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:25,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66931384] [2022-01-18 13:27:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:25,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:25,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:25,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66931384] [2022-01-18 13:27:25,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66931384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:25,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:25,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:25,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256826859] [2022-01-18 13:27:25,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:25,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:25,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:25,487 INFO L87 Difference]: Start difference. First operand 1087 states and 2705 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:26,314 INFO L93 Difference]: Finished difference Result 1248 states and 3087 transitions. [2022-01-18 13:27:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:27:26,315 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:26,316 INFO L225 Difference]: With dead ends: 1248 [2022-01-18 13:27:26,316 INFO L226 Difference]: Without dead ends: 1135 [2022-01-18 13:27:26,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:27:26,317 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 298 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:26,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2190 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-01-18 13:27:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1075. [2022-01-18 13:27:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:27:26,326 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:27:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:26,326 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:27:26,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:27:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:26,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:26,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:26,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-18 13:27:26,327 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1460660980, now seen corresponding path program 156 times [2022-01-18 13:27:26,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:26,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413945169] [2022-01-18 13:27:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:26,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:26,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:26,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413945169] [2022-01-18 13:27:26,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413945169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:26,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:26,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:26,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535990687] [2022-01-18 13:27:26,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:26,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:26,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:26,577 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:27,538 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-01-18 13:27:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:27:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:27,540 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 13:27:27,540 INFO L226 Difference]: Without dead ends: 1200 [2022-01-18 13:27:27,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:27:27,541 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 292 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:27,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2302 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-01-18 13:27:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1099. [2022-01-18 13:27:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:27:27,550 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:27:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:27,550 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:27:27,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:27:27,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:27,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:27,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:27,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-18 13:27:27,552 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:27,552 INFO L85 PathProgramCache]: Analyzing trace with hash -144128088, now seen corresponding path program 157 times [2022-01-18 13:27:27,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:27,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434908399] [2022-01-18 13:27:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:27,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:27,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:27,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434908399] [2022-01-18 13:27:27,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434908399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:27,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:27,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:27,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601933651] [2022-01-18 13:27:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:27,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:27,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:27,807 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:28,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:28,620 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-01-18 13:27:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:27:28,620 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:28,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:28,622 INFO L225 Difference]: With dead ends: 1266 [2022-01-18 13:27:28,622 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 13:27:28,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:27:28,622 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 271 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:28,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2275 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 13:27:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1059. [2022-01-18 13:27:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 13:27:28,631 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 13:27:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:28,631 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 13:27:28,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 13:27:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:28,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:28,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:28,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-18 13:27:28,632 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash 709963020, now seen corresponding path program 158 times [2022-01-18 13:27:28,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:28,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834883741] [2022-01-18 13:27:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:28,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:28,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:28,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834883741] [2022-01-18 13:27:28,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834883741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:28,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:28,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:28,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441863828] [2022-01-18 13:27:28,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:28,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:28,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:28,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:28,896 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:30,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:30,153 INFO L93 Difference]: Finished difference Result 1333 states and 3298 transitions. [2022-01-18 13:27:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:27:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:30,155 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 13:27:30,155 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 13:27:30,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:27:30,155 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 279 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:30,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2954 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:27:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 13:27:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1087. [2022-01-18 13:27:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 13:27:30,165 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 13:27:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:30,165 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 13:27:30,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 13:27:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:30,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:30,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:30,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-18 13:27:30,166 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:30,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2026495912, now seen corresponding path program 159 times [2022-01-18 13:27:30,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:30,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481362137] [2022-01-18 13:27:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:30,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:30,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:30,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481362137] [2022-01-18 13:27:30,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481362137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:30,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:30,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:30,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238664164] [2022-01-18 13:27:30,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:30,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:30,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:30,427 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:31,432 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-01-18 13:27:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:27:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:31,434 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 13:27:31,434 INFO L226 Difference]: Without dead ends: 1154 [2022-01-18 13:27:31,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:27:31,434 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 321 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:31,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2540 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-01-18 13:27:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1063. [2022-01-18 13:27:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4849340866290017) internal successors, (2639), 1062 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-01-18 13:27:31,443 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-01-18 13:27:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:31,444 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-01-18 13:27:31,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:31,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-01-18 13:27:31,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:31,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:31,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:31,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-18 13:27:31,445 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:31,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash 895980882, now seen corresponding path program 160 times [2022-01-18 13:27:31,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:31,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672380290] [2022-01-18 13:27:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:31,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:31,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:31,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672380290] [2022-01-18 13:27:31,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672380290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:31,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:31,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:31,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432963768] [2022-01-18 13:27:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:31,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:31,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:31,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:31,705 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:32,586 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-01-18 13:27:32,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:27:32,586 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:32,588 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 13:27:32,588 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 13:27:32,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:27:32,588 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 305 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:32,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2464 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 13:27:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-01-18 13:27:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 13:27:32,597 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 13:27:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:32,597 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 13:27:32,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 13:27:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:32,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:32,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:32,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-18 13:27:32,599 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash 774666158, now seen corresponding path program 161 times [2022-01-18 13:27:32,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:32,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251256113] [2022-01-18 13:27:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:32,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:32,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251256113] [2022-01-18 13:27:32,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251256113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:32,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:32,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:32,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300670455] [2022-01-18 13:27:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:32,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:32,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:32,879 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:33,984 INFO L93 Difference]: Finished difference Result 1331 states and 3284 transitions. [2022-01-18 13:27:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:27:33,985 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:33,986 INFO L225 Difference]: With dead ends: 1331 [2022-01-18 13:27:33,986 INFO L226 Difference]: Without dead ends: 1233 [2022-01-18 13:27:33,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:27:33,986 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 270 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:33,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2716 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:27:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-01-18 13:27:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1099. [2022-01-18 13:27:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:27:33,996 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:27:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:33,996 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:27:33,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:33,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:27:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:33,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:33,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:33,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-18 13:27:33,997 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2091199050, now seen corresponding path program 162 times [2022-01-18 13:27:33,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:33,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851533140] [2022-01-18 13:27:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:33,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:34,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:34,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851533140] [2022-01-18 13:27:34,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851533140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:34,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:34,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:34,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971201563] [2022-01-18 13:27:34,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:34,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:34,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:34,283 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:35,432 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-01-18 13:27:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:27:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:35,433 INFO L225 Difference]: With dead ends: 1299 [2022-01-18 13:27:35,433 INFO L226 Difference]: Without dead ends: 1164 [2022-01-18 13:27:35,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:27:35,434 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 287 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:35,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2698 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:27:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-18 13:27:35,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1075. [2022-01-18 13:27:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 13:27:35,443 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 13:27:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:35,443 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 13:27:35,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 13:27:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:35,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:35,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:35,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-18 13:27:35,444 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash 723193486, now seen corresponding path program 163 times [2022-01-18 13:27:35,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:35,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206321990] [2022-01-18 13:27:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:35,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:35,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:35,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206321990] [2022-01-18 13:27:35,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206321990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:35,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:35,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:35,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891879466] [2022-01-18 13:27:35,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:35,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:35,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:35,709 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:36,542 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-01-18 13:27:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:27:36,542 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:36,543 INFO L225 Difference]: With dead ends: 1275 [2022-01-18 13:27:36,543 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 13:27:36,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:27:36,544 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 288 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:36,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2477 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 13:27:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1035. [2022-01-18 13:27:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.481624758220503) internal successors, (2566), 1034 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-01-18 13:27:36,552 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-01-18 13:27:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:36,553 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-01-18 13:27:36,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-01-18 13:27:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:36,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:36,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:36,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-18 13:27:36,554 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash 799262638, now seen corresponding path program 164 times [2022-01-18 13:27:36,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:36,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707356761] [2022-01-18 13:27:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:36,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:36,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:36,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707356761] [2022-01-18 13:27:36,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707356761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:36,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:36,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:36,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826326926] [2022-01-18 13:27:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:36,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:36,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:36,843 INFO L87 Difference]: Start difference. First operand 1035 states and 2566 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:38,983 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-01-18 13:27:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:27:38,983 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:38,985 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 13:27:38,985 INFO L226 Difference]: Without dead ends: 1249 [2022-01-18 13:27:38,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:27:38,985 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 294 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:38,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 3159 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:27:38,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-01-18 13:27:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1087. [2022-01-18 13:27:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 13:27:38,995 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 13:27:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:38,995 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 13:27:38,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 13:27:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:38,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:38,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:38,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-18 13:27:38,997 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2115795530, now seen corresponding path program 165 times [2022-01-18 13:27:38,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:38,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594914552] [2022-01-18 13:27:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:38,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:39,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:39,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594914552] [2022-01-18 13:27:39,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594914552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:39,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:39,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:39,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078089035] [2022-01-18 13:27:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:39,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:39,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:39,266 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:40,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:40,692 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-01-18 13:27:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:27:40,692 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:40,694 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 13:27:40,694 INFO L226 Difference]: Without dead ends: 1168 [2022-01-18 13:27:40,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:27:40,695 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 296 mSDsluCounter, 3111 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:40,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 3138 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:27:40,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-01-18 13:27:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-01-18 13:27:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.481167608286252) internal successors, (2635), 1062 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-01-18 13:27:40,705 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-01-18 13:27:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:40,705 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-01-18 13:27:40,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-01-18 13:27:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:40,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:40,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:40,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-18 13:27:40,706 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:40,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash 747789966, now seen corresponding path program 166 times [2022-01-18 13:27:40,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:40,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857801408] [2022-01-18 13:27:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:40,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:41,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:41,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857801408] [2022-01-18 13:27:41,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857801408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:41,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:41,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:41,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414470429] [2022-01-18 13:27:41,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:41,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:41,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:41,003 INFO L87 Difference]: Start difference. First operand 1063 states and 2635 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:41,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:41,975 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-01-18 13:27:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:27:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:41,977 INFO L225 Difference]: With dead ends: 1267 [2022-01-18 13:27:41,977 INFO L226 Difference]: Without dead ends: 1087 [2022-01-18 13:27:41,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:27:41,977 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 271 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:41,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2911 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:27:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-01-18 13:27:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-01-18 13:27:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.478805394990366) internal successors, (2573), 1038 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-01-18 13:27:41,986 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-01-18 13:27:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:41,986 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-01-18 13:27:41,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-01-18 13:27:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:41,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:41,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:41,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-18 13:27:41,987 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1561685210, now seen corresponding path program 167 times [2022-01-18 13:27:41,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:41,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183951421] [2022-01-18 13:27:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:41,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:42,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:42,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183951421] [2022-01-18 13:27:42,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183951421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:42,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:42,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:27:42,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418599102] [2022-01-18 13:27:42,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:42,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:27:42,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:42,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:27:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:27:42,245 INFO L87 Difference]: Start difference. First operand 1039 states and 2573 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:42,990 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-01-18 13:27:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:27:42,991 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:42,992 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 13:27:42,992 INFO L226 Difference]: Without dead ends: 1043 [2022-01-18 13:27:42,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:27:42,992 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 275 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:42,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2510 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:27:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-01-18 13:27:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1015. [2022-01-18 13:27:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 2.4881656804733727) internal successors, (2523), 1014 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2523 transitions. [2022-01-18 13:27:43,001 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2523 transitions. Word has length 79 [2022-01-18 13:27:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:43,001 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2523 transitions. [2022-01-18 13:27:43,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2523 transitions. [2022-01-18 13:27:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:43,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:43,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:43,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-18 13:27:43,002 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash 441084520, now seen corresponding path program 168 times [2022-01-18 13:27:43,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313897449] [2022-01-18 13:27:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:43,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:43,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:43,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313897449] [2022-01-18 13:27:43,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313897449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:43,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:43,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:43,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893820639] [2022-01-18 13:27:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:43,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:43,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:43,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:43,296 INFO L87 Difference]: Start difference. First operand 1015 states and 2523 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:44,643 INFO L93 Difference]: Finished difference Result 1337 states and 3338 transitions. [2022-01-18 13:27:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:27:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:44,645 INFO L225 Difference]: With dead ends: 1337 [2022-01-18 13:27:44,645 INFO L226 Difference]: Without dead ends: 1207 [2022-01-18 13:27:44,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:27:44,645 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 303 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:44,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2810 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:27:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-18 13:27:44,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1099. [2022-01-18 13:27:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5009107468123863) internal successors, (2746), 1098 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-01-18 13:27:44,655 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-01-18 13:27:44,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:44,655 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-01-18 13:27:44,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:44,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-01-18 13:27:44,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:44,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:44,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:44,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-18 13:27:44,656 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:44,657 INFO L85 PathProgramCache]: Analyzing trace with hash -412306646, now seen corresponding path program 169 times [2022-01-18 13:27:44,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:44,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414679704] [2022-01-18 13:27:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:44,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:44,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:44,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414679704] [2022-01-18 13:27:44,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414679704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:44,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:44,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:44,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161506281] [2022-01-18 13:27:44,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:44,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:44,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:44,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:44,945 INFO L87 Difference]: Start difference. First operand 1099 states and 2746 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:47,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:27:48,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:48,354 INFO L93 Difference]: Finished difference Result 1372 states and 3420 transitions. [2022-01-18 13:27:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:27:48,354 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:48,356 INFO L225 Difference]: With dead ends: 1372 [2022-01-18 13:27:48,356 INFO L226 Difference]: Without dead ends: 1274 [2022-01-18 13:27:48,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=3138, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:27:48,356 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 347 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:48,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2947 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1164 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 13:27:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-01-18 13:27:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1127. [2022-01-18 13:27:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.496447602131439) internal successors, (2811), 1126 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2811 transitions. [2022-01-18 13:27:48,366 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2811 transitions. Word has length 79 [2022-01-18 13:27:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:48,366 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2811 transitions. [2022-01-18 13:27:48,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2811 transitions. [2022-01-18 13:27:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:48,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:48,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:48,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-18 13:27:48,368 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:48,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:48,368 INFO L85 PathProgramCache]: Analyzing trace with hash 301930632, now seen corresponding path program 170 times [2022-01-18 13:27:48,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:48,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303955535] [2022-01-18 13:27:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:48,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:48,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:48,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303955535] [2022-01-18 13:27:48,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303955535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:48,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:48,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:48,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172118499] [2022-01-18 13:27:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:48,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:48,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:48,648 INFO L87 Difference]: Start difference. First operand 1127 states and 2811 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:50,828 INFO L93 Difference]: Finished difference Result 1347 states and 3349 transitions. [2022-01-18 13:27:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:27:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:50,830 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 13:27:50,830 INFO L226 Difference]: Without dead ends: 1234 [2022-01-18 13:27:50,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=2819, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:27:50,831 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 315 mSDsluCounter, 2914 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:50,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2977 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 13:27:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-18 13:27:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1119. [2022-01-18 13:27:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.4910554561717353) internal successors, (2785), 1118 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2785 transitions. [2022-01-18 13:27:50,840 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2785 transitions. Word has length 79 [2022-01-18 13:27:50,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:50,840 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2785 transitions. [2022-01-18 13:27:50,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2785 transitions. [2022-01-18 13:27:50,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:50,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:50,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:50,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-18 13:27:50,842 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:50,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash 627378858, now seen corresponding path program 171 times [2022-01-18 13:27:50,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:50,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903601438] [2022-01-18 13:27:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:50,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:51,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:51,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903601438] [2022-01-18 13:27:51,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903601438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:51,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:51,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:27:51,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90169203] [2022-01-18 13:27:51,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:51,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:27:51,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:27:51,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:27:51,125 INFO L87 Difference]: Start difference. First operand 1119 states and 2785 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:52,400 INFO L93 Difference]: Finished difference Result 1341 states and 3325 transitions. [2022-01-18 13:27:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:27:52,400 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:52,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:52,401 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 13:27:52,401 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:27:52,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=2523, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:27:52,402 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 285 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:52,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2877 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:27:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:27:52,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1115. [2022-01-18 13:27:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.490125673249551) internal successors, (2774), 1114 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2774 transitions. [2022-01-18 13:27:52,411 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2774 transitions. Word has length 79 [2022-01-18 13:27:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:52,411 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2774 transitions. [2022-01-18 13:27:52,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2774 transitions. [2022-01-18 13:27:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:52,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:52,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:52,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-18 13:27:52,413 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:52,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1488961192, now seen corresponding path program 172 times [2022-01-18 13:27:52,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:52,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395793369] [2022-01-18 13:27:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:52,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:52,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:52,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395793369] [2022-01-18 13:27:52,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395793369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:52,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:52,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:52,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629631872] [2022-01-18 13:27:52,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:52,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:52,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:52,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:52,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:52,691 INFO L87 Difference]: Start difference. First operand 1115 states and 2774 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:54,688 INFO L93 Difference]: Finished difference Result 1346 states and 3332 transitions. [2022-01-18 13:27:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:27:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:54,690 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 13:27:54,690 INFO L226 Difference]: Without dead ends: 1248 [2022-01-18 13:27:54,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:27:54,690 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 291 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:54,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2725 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:27:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-01-18 13:27:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1139. [2022-01-18 13:27:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4885764499121263) internal successors, (2832), 1138 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2832 transitions. [2022-01-18 13:27:54,700 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2832 transitions. Word has length 79 [2022-01-18 13:27:54,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:54,700 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2832 transitions. [2022-01-18 13:27:54,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2832 transitions. [2022-01-18 13:27:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:54,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:54,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:54,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-18 13:27:54,701 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1489473212, now seen corresponding path program 173 times [2022-01-18 13:27:54,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:54,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15758089] [2022-01-18 13:27:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:54,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:54,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:54,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15758089] [2022-01-18 13:27:54,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15758089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:54,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:54,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:54,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124868493] [2022-01-18 13:27:54,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:54,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:54,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:54,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:54,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:54,952 INFO L87 Difference]: Start difference. First operand 1139 states and 2832 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:58,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:27:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:27:58,791 INFO L93 Difference]: Finished difference Result 1338 states and 3302 transitions. [2022-01-18 13:27:58,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:27:58,792 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:27:58,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:27:58,793 INFO L225 Difference]: With dead ends: 1338 [2022-01-18 13:27:58,793 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 13:27:58,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:27:58,794 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 319 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:27:58,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2697 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1056 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-01-18 13:27:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 13:27:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1115. [2022-01-18 13:27:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.490125673249551) internal successors, (2774), 1114 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2774 transitions. [2022-01-18 13:27:58,803 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2774 transitions. Word has length 79 [2022-01-18 13:27:58,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:27:58,803 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2774 transitions. [2022-01-18 13:27:58,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:27:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2774 transitions. [2022-01-18 13:27:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:27:58,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:27:58,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:27:58,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-18 13:27:58,805 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:27:58,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:27:58,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1009207256, now seen corresponding path program 174 times [2022-01-18 13:27:58,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:27:58,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271878986] [2022-01-18 13:27:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:27:58,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:27:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:27:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:27:59,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:27:59,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271878986] [2022-01-18 13:27:59,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271878986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:27:59,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:27:59,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:27:59,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172976177] [2022-01-18 13:27:59,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:27:59,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:27:59,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:27:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:27:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:27:59,074 INFO L87 Difference]: Start difference. First operand 1115 states and 2774 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:00,392 INFO L93 Difference]: Finished difference Result 1356 states and 3368 transitions. [2022-01-18 13:28:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:28:00,392 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:00,394 INFO L225 Difference]: With dead ends: 1356 [2022-01-18 13:28:00,394 INFO L226 Difference]: Without dead ends: 1246 [2022-01-18 13:28:00,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:28:00,394 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 277 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:00,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2640 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:28:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-01-18 13:28:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1131. [2022-01-18 13:28:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.493805309734513) internal successors, (2818), 1130 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2818 transitions. [2022-01-18 13:28:00,404 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2818 transitions. Word has length 79 [2022-01-18 13:28:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:00,404 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2818 transitions. [2022-01-18 13:28:00,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2818 transitions. [2022-01-18 13:28:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:00,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:00,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:00,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-18 13:28:00,406 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1580521506, now seen corresponding path program 175 times [2022-01-18 13:28:00,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:00,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785252128] [2022-01-18 13:28:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:00,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:00,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:00,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785252128] [2022-01-18 13:28:00,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785252128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:00,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:00,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:00,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214787407] [2022-01-18 13:28:00,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:00,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:00,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:00,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:00,652 INFO L87 Difference]: Start difference. First operand 1131 states and 2818 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:03,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:03,910 INFO L93 Difference]: Finished difference Result 1388 states and 3439 transitions. [2022-01-18 13:28:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:28:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:03,912 INFO L225 Difference]: With dead ends: 1388 [2022-01-18 13:28:03,912 INFO L226 Difference]: Without dead ends: 1209 [2022-01-18 13:28:03,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=2506, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:28:03,912 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 295 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:03,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2955 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1157 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 13:28:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-01-18 13:28:03,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1103. [2022-01-18 13:28:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4872958257713247) internal successors, (2741), 1102 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2741 transitions. [2022-01-18 13:28:03,922 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2741 transitions. Word has length 79 [2022-01-18 13:28:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:03,922 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2741 transitions. [2022-01-18 13:28:03,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2741 transitions. [2022-01-18 13:28:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:03,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:03,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:03,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-18 13:28:03,924 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash 782695082, now seen corresponding path program 176 times [2022-01-18 13:28:03,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:03,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798989763] [2022-01-18 13:28:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:03,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:04,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:04,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798989763] [2022-01-18 13:28:04,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798989763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:04,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:04,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:04,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175443558] [2022-01-18 13:28:04,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:04,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:04,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:04,188 INFO L87 Difference]: Start difference. First operand 1103 states and 2741 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:05,201 INFO L93 Difference]: Finished difference Result 1297 states and 3208 transitions. [2022-01-18 13:28:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:28:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:05,202 INFO L225 Difference]: With dead ends: 1297 [2022-01-18 13:28:05,202 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 13:28:05,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:28:05,203 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 255 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:05,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 2757 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:28:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 13:28:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1103. [2022-01-18 13:28:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.483666061705989) internal successors, (2737), 1102 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2737 transitions. [2022-01-18 13:28:05,212 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2737 transitions. Word has length 79 [2022-01-18 13:28:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:05,213 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2737 transitions. [2022-01-18 13:28:05,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2737 transitions. [2022-01-18 13:28:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:05,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:05,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:05,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-18 13:28:05,214 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:05,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1130037930, now seen corresponding path program 177 times [2022-01-18 13:28:05,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:05,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756155861] [2022-01-18 13:28:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:05,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:05,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756155861] [2022-01-18 13:28:05,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756155861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:05,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:05,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:05,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24160227] [2022-01-18 13:28:05,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:05,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:05,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:05,479 INFO L87 Difference]: Start difference. First operand 1103 states and 2737 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:07,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:08,932 INFO L93 Difference]: Finished difference Result 1272 states and 3141 transitions. [2022-01-18 13:28:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:28:08,932 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:08,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:08,934 INFO L225 Difference]: With dead ends: 1272 [2022-01-18 13:28:08,934 INFO L226 Difference]: Without dead ends: 1163 [2022-01-18 13:28:08,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=2136, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:28:08,934 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 307 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:08,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2412 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 961 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 13:28:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-01-18 13:28:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1095. [2022-01-18 13:28:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.4853747714808043) internal successors, (2719), 1094 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2719 transitions. [2022-01-18 13:28:08,943 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2719 transitions. Word has length 79 [2022-01-18 13:28:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:08,943 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2719 transitions. [2022-01-18 13:28:08,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2719 transitions. [2022-01-18 13:28:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:08,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:08,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:08,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-18 13:28:08,945 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:08,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1600728744, now seen corresponding path program 178 times [2022-01-18 13:28:08,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:08,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378592038] [2022-01-18 13:28:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:08,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:09,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:09,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378592038] [2022-01-18 13:28:09,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378592038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:09,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:09,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:09,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719287716] [2022-01-18 13:28:09,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:09,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:09,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:09,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:09,214 INFO L87 Difference]: Start difference. First operand 1095 states and 2719 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:12,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:12,804 INFO L93 Difference]: Finished difference Result 1257 states and 3106 transitions. [2022-01-18 13:28:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:28:12,804 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:12,806 INFO L225 Difference]: With dead ends: 1257 [2022-01-18 13:28:12,806 INFO L226 Difference]: Without dead ends: 1139 [2022-01-18 13:28:12,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:28:12,806 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 300 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:12,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2370 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 931 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-01-18 13:28:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-18 13:28:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1075. [2022-01-18 13:28:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:28:12,815 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:28:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:12,815 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:28:12,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:12,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:28:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:12,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:12,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:12,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-18 13:28:12,816 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:12,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:12,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1860354682, now seen corresponding path program 179 times [2022-01-18 13:28:12,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:12,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443210325] [2022-01-18 13:28:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:12,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:13,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:13,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443210325] [2022-01-18 13:28:13,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443210325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:13,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:13,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:28:13,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014533947] [2022-01-18 13:28:13,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:13,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:28:13,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:13,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:28:13,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:28:13,093 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:15,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:18,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:18,653 INFO L93 Difference]: Finished difference Result 1437 states and 3534 transitions. [2022-01-18 13:28:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:28:18,653 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:18,655 INFO L225 Difference]: With dead ends: 1437 [2022-01-18 13:28:18,655 INFO L226 Difference]: Without dead ends: 1339 [2022-01-18 13:28:18,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=3142, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:28:18,655 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 365 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 46 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:18,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 3096 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1187 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-01-18 13:28:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-01-18 13:28:18,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1091. [2022-01-18 13:28:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.491743119266055) internal successors, (2716), 1090 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2716 transitions. [2022-01-18 13:28:18,665 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2716 transitions. Word has length 79 [2022-01-18 13:28:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:18,665 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2716 transitions. [2022-01-18 13:28:18,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2716 transitions. [2022-01-18 13:28:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:18,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:18,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:18,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-01-18 13:28:18,667 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1146117404, now seen corresponding path program 180 times [2022-01-18 13:28:18,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:18,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103556736] [2022-01-18 13:28:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:18,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:18,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:18,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103556736] [2022-01-18 13:28:18,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103556736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:18,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:18,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:28:18,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676025900] [2022-01-18 13:28:18,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:18,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:28:18,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:28:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:28:18,943 INFO L87 Difference]: Start difference. First operand 1091 states and 2716 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:20,513 INFO L93 Difference]: Finished difference Result 1329 states and 3291 transitions. [2022-01-18 13:28:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:28:20,513 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:20,515 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 13:28:20,515 INFO L226 Difference]: Without dead ends: 1178 [2022-01-18 13:28:20,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=266, Invalid=2926, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:28:20,515 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 360 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:20,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2934 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:28:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-01-18 13:28:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1079. [2022-01-18 13:28:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4888682745825603) internal successors, (2683), 1078 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-01-18 13:28:20,525 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-01-18 13:28:20,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:20,525 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-01-18 13:28:20,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:20,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-01-18 13:28:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:20,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:20,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:20,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-01-18 13:28:20,526 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:20,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1674336820, now seen corresponding path program 181 times [2022-01-18 13:28:20,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:20,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620777581] [2022-01-18 13:28:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:20,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:20,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:20,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620777581] [2022-01-18 13:28:20,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620777581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:20,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:20,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:20,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526435708] [2022-01-18 13:28:20,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:20,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:20,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:20,799 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:21,861 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-01-18 13:28:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:28:21,861 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:21,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:21,862 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 13:28:21,862 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 13:28:21,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:28:21,863 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 296 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:21,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2984 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:28:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 13:28:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-01-18 13:28:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 13:28:21,872 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 13:28:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:21,872 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 13:28:21,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 13:28:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:21,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:21,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:21,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-01-18 13:28:21,874 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1232646802, now seen corresponding path program 182 times [2022-01-18 13:28:21,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:21,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518935648] [2022-01-18 13:28:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:21,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:22,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518935648] [2022-01-18 13:28:22,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518935648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:22,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:22,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:22,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866952736] [2022-01-18 13:28:22,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:22,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:22,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:22,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:22,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:22,143 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:24,529 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-01-18 13:28:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:28:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:24,531 INFO L225 Difference]: With dead ends: 1339 [2022-01-18 13:28:24,531 INFO L226 Difference]: Without dead ends: 1241 [2022-01-18 13:28:24,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=231, Invalid=2421, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:28:24,532 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 309 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:24,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2771 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 13:28:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-01-18 13:28:24,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1111. [2022-01-18 13:28:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.492792792792793) internal successors, (2767), 1110 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-01-18 13:28:24,541 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-01-18 13:28:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:24,541 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-01-18 13:28:24,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-01-18 13:28:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:24,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:24,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:24,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-01-18 13:28:24,543 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:24,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash 83886090, now seen corresponding path program 183 times [2022-01-18 13:28:24,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:24,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026192877] [2022-01-18 13:28:24,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:24,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:24,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:24,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026192877] [2022-01-18 13:28:24,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026192877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:24,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:24,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:24,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961366134] [2022-01-18 13:28:24,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:24,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:24,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:24,797 INFO L87 Difference]: Start difference. First operand 1111 states and 2767 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:27,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:29,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:29,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:29,934 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-01-18 13:28:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:28:29,934 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:29,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:29,936 INFO L225 Difference]: With dead ends: 1307 [2022-01-18 13:28:29,936 INFO L226 Difference]: Without dead ends: 1172 [2022-01-18 13:28:29,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=2333, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:28:29,936 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 312 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:29,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2594 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 976 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-01-18 13:28:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-01-18 13:28:29,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1087. [2022-01-18 13:28:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 13:28:29,946 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 13:28:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:29,946 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 13:28:29,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 13:28:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:29,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:29,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:29,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-01-18 13:28:29,948 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:29,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1284119474, now seen corresponding path program 184 times [2022-01-18 13:28:29,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:29,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377398595] [2022-01-18 13:28:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:29,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:30,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:30,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377398595] [2022-01-18 13:28:30,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377398595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:30,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:30,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:30,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198698897] [2022-01-18 13:28:30,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:30,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:30,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:30,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:30,205 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:31,101 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-01-18 13:28:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:28:31,101 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:31,102 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 13:28:31,102 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 13:28:31,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:28:31,103 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 277 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:31,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2510 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 13:28:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-01-18 13:28:31,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.4865125240847785) internal successors, (2581), 1038 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2581 transitions. [2022-01-18 13:28:31,112 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2581 transitions. Word has length 79 [2022-01-18 13:28:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:31,112 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2581 transitions. [2022-01-18 13:28:31,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2581 transitions. [2022-01-18 13:28:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:31,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:31,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:31,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-01-18 13:28:31,114 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:31,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash -399222648, now seen corresponding path program 185 times [2022-01-18 13:28:31,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:31,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103989600] [2022-01-18 13:28:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:31,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:31,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:31,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103989600] [2022-01-18 13:28:31,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103989600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:31,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:31,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:31,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291824324] [2022-01-18 13:28:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:31,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:31,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:31,375 INFO L87 Difference]: Start difference. First operand 1039 states and 2581 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:32,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:32,246 INFO L93 Difference]: Finished difference Result 1257 states and 3114 transitions. [2022-01-18 13:28:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:28:32,246 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:32,248 INFO L225 Difference]: With dead ends: 1257 [2022-01-18 13:28:32,248 INFO L226 Difference]: Without dead ends: 1143 [2022-01-18 13:28:32,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:28:32,248 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 248 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:32,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 2254 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:32,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-01-18 13:28:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1075. [2022-01-18 13:28:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:28:32,257 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:28:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:32,257 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:28:32,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:28:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:32,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:32,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:32,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-01-18 13:28:32,258 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:32,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash -766117078, now seen corresponding path program 186 times [2022-01-18 13:28:32,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:32,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136799178] [2022-01-18 13:28:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:32,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:32,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:32,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136799178] [2022-01-18 13:28:32,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136799178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:32,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:32,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:32,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203757300] [2022-01-18 13:28:32,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:32,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:32,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:32,517 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:33,424 INFO L93 Difference]: Finished difference Result 1268 states and 3138 transitions. [2022-01-18 13:28:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:28:33,424 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:33,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:33,426 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 13:28:33,426 INFO L226 Difference]: Without dead ends: 1170 [2022-01-18 13:28:33,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:28:33,426 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 240 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:33,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 2569 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-01-18 13:28:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1079. [2022-01-18 13:28:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4888682745825603) internal successors, (2683), 1078 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-01-18 13:28:33,436 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-01-18 13:28:33,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:33,436 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-01-18 13:28:33,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-01-18 13:28:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:33,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:33,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:33,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-01-18 13:28:33,437 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:33,437 INFO L85 PathProgramCache]: Analyzing trace with hash -51879800, now seen corresponding path program 187 times [2022-01-18 13:28:33,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:33,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11693401] [2022-01-18 13:28:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:33,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:33,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:33,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11693401] [2022-01-18 13:28:33,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11693401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:33,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:33,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:33,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721855036] [2022-01-18 13:28:33,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:33,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:33,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:33,722 INFO L87 Difference]: Start difference. First operand 1079 states and 2683 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:34,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:34,587 INFO L93 Difference]: Finished difference Result 1236 states and 3054 transitions. [2022-01-18 13:28:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:28:34,588 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:34,589 INFO L225 Difference]: With dead ends: 1236 [2022-01-18 13:28:34,589 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 13:28:34,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:28:34,590 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 254 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:34,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2371 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 13:28:34,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1071. [2022-01-18 13:28:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4906542056074765) internal successors, (2665), 1070 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-01-18 13:28:34,599 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-01-18 13:28:34,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:34,599 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-01-18 13:28:34,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:34,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-01-18 13:28:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:34,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:34,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:34,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-01-18 13:28:34,600 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 418811014, now seen corresponding path program 188 times [2022-01-18 13:28:34,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:34,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549039393] [2022-01-18 13:28:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:34,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:34,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:34,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549039393] [2022-01-18 13:28:34,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549039393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:34,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:34,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:34,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725664366] [2022-01-18 13:28:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:34,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:34,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:34,853 INFO L87 Difference]: Start difference. First operand 1071 states and 2665 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:37,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:38,081 INFO L93 Difference]: Finished difference Result 1370 states and 3360 transitions. [2022-01-18 13:28:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:28:38,081 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:38,083 INFO L225 Difference]: With dead ends: 1370 [2022-01-18 13:28:38,083 INFO L226 Difference]: Without dead ends: 1272 [2022-01-18 13:28:38,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=213, Invalid=2043, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:28:38,084 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 288 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:38,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2404 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 943 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 13:28:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-01-18 13:28:38,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1083. [2022-01-18 13:28:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.489833641404806) internal successors, (2694), 1082 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2694 transitions. [2022-01-18 13:28:38,094 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2694 transitions. Word has length 79 [2022-01-18 13:28:38,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:38,094 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2694 transitions. [2022-01-18 13:28:38,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:38,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2694 transitions. [2022-01-18 13:28:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:38,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:38,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:38,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-01-18 13:28:38,095 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:38,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:38,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1133048292, now seen corresponding path program 189 times [2022-01-18 13:28:38,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:38,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4123910] [2022-01-18 13:28:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:38,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:38,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:38,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4123910] [2022-01-18 13:28:38,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4123910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:38,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:38,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:38,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413143762] [2022-01-18 13:28:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:38,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:38,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:38,361 INFO L87 Difference]: Start difference. First operand 1083 states and 2694 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:41,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:41,279 INFO L93 Difference]: Finished difference Result 1274 states and 3146 transitions. [2022-01-18 13:28:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:28:41,279 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:41,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:41,280 INFO L225 Difference]: With dead ends: 1274 [2022-01-18 13:28:41,280 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 13:28:41,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:28:41,281 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 296 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:41,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2508 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 950 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 13:28:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 13:28:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-01-18 13:28:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 13:28:41,290 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 13:28:41,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:41,290 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 13:28:41,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:41,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 13:28:41,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:41,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:41,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:41,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-01-18 13:28:41,291 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:41,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1252694884, now seen corresponding path program 190 times [2022-01-18 13:28:41,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:41,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372457640] [2022-01-18 13:28:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:41,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:41,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:41,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372457640] [2022-01-18 13:28:41,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372457640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:41,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:41,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:41,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749616555] [2022-01-18 13:28:41,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:41,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:41,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:41,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:41,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:41,560 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:42,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:42,703 INFO L93 Difference]: Finished difference Result 1333 states and 3298 transitions. [2022-01-18 13:28:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:28:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:42,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:42,705 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 13:28:42,705 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 13:28:42,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:28:42,705 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 277 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:42,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2931 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:28:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 13:28:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1091. [2022-01-18 13:28:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-01-18 13:28:42,715 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-01-18 13:28:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:42,716 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-01-18 13:28:42,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-01-18 13:28:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:42,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:42,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:42,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-01-18 13:28:42,717 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:42,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:42,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1725739520, now seen corresponding path program 191 times [2022-01-18 13:28:42,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:42,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179887352] [2022-01-18 13:28:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:42,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:42,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179887352] [2022-01-18 13:28:42,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179887352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:42,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:42,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:42,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749414993] [2022-01-18 13:28:42,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:42,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:42,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:42,966 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:43,981 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-01-18 13:28:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:28:43,981 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:43,983 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 13:28:43,983 INFO L226 Difference]: Without dead ends: 1154 [2022-01-18 13:28:43,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:28:43,983 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 314 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:43,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2653 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-01-18 13:28:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1067. [2022-01-18 13:28:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4859287054409007) internal successors, (2650), 1066 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-01-18 13:28:43,992 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-01-18 13:28:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:43,992 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-01-18 13:28:43,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-01-18 13:28:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:43,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:43,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:43,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-01-18 13:28:43,993 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1438712746, now seen corresponding path program 192 times [2022-01-18 13:28:43,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:43,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805287364] [2022-01-18 13:28:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:43,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:44,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:44,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805287364] [2022-01-18 13:28:44,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805287364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:44,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:44,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:44,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670188048] [2022-01-18 13:28:44,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:44,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:44,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:44,261 INFO L87 Difference]: Start difference. First operand 1067 states and 2650 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:45,094 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-01-18 13:28:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:28:45,094 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:45,095 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 13:28:45,095 INFO L226 Difference]: Without dead ends: 1111 [2022-01-18 13:28:45,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:28:45,096 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 300 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:45,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2302 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-01-18 13:28:45,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1059. [2022-01-18 13:28:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 13:28:45,105 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 13:28:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:45,105 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 13:28:45,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 13:28:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:45,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:45,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:45,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-01-18 13:28:45,106 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash -393906834, now seen corresponding path program 193 times [2022-01-18 13:28:45,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:45,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707646326] [2022-01-18 13:28:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:45,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:45,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:45,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707646326] [2022-01-18 13:28:45,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707646326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:45,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:45,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:45,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284823443] [2022-01-18 13:28:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:45,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:45,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:45,372 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:48,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:28:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:48,468 INFO L93 Difference]: Finished difference Result 1335 states and 3295 transitions. [2022-01-18 13:28:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:28:48,469 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:48,470 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 13:28:48,470 INFO L226 Difference]: Without dead ends: 1237 [2022-01-18 13:28:48,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=2243, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:28:48,470 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 259 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:48,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2862 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1104 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:28:48,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-01-18 13:28:48,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1107. [2022-01-18 13:28:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.491862567811935) internal successors, (2756), 1106 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-01-18 13:28:48,480 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-01-18 13:28:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:48,480 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-01-18 13:28:48,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-01-18 13:28:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:48,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:48,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:48,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-01-18 13:28:48,481 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:48,481 INFO L85 PathProgramCache]: Analyzing trace with hash 922626058, now seen corresponding path program 194 times [2022-01-18 13:28:48,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:48,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417610949] [2022-01-18 13:28:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:48,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:48,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417610949] [2022-01-18 13:28:48,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417610949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:48,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:48,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:48,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94188682] [2022-01-18 13:28:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:48,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:48,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:48,728 INFO L87 Difference]: Start difference. First operand 1107 states and 2756 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:49,722 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-01-18 13:28:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:28:49,722 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:49,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:49,723 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 13:28:49,723 INFO L226 Difference]: Without dead ends: 1168 [2022-01-18 13:28:49,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:28:49,724 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 301 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:49,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2539 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-01-18 13:28:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1083. [2022-01-18 13:28:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4861367837338264) internal successors, (2690), 1082 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:49,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-01-18 13:28:49,733 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-01-18 13:28:49,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:49,733 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-01-18 13:28:49,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:49,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-01-18 13:28:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:49,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:49,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:49,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-01-18 13:28:49,734 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash -445379506, now seen corresponding path program 195 times [2022-01-18 13:28:49,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:49,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920885238] [2022-01-18 13:28:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:49,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:49,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:49,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920885238] [2022-01-18 13:28:49,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920885238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:49,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:49,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:49,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960214725] [2022-01-18 13:28:49,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:49,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:49,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:49,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:49,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:49,995 INFO L87 Difference]: Start difference. First operand 1083 states and 2690 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:50,859 INFO L93 Difference]: Finished difference Result 1279 states and 3141 transitions. [2022-01-18 13:28:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:28:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:50,860 INFO L225 Difference]: With dead ends: 1279 [2022-01-18 13:28:50,860 INFO L226 Difference]: Without dead ends: 1091 [2022-01-18 13:28:50,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:28:50,861 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 271 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:50,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2319 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:28:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-01-18 13:28:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-01-18 13:28:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 13:28:50,870 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 13:28:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:50,870 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 13:28:50,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 13:28:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:50,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:50,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:50,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-01-18 13:28:50,871 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1055912688, now seen corresponding path program 196 times [2022-01-18 13:28:50,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:50,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837946090] [2022-01-18 13:28:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:50,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:51,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:51,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837946090] [2022-01-18 13:28:51,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837946090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:51,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:51,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:28:51,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917880663] [2022-01-18 13:28:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:51,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:28:51,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:51,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:28:51,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:28:51,153 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:52,795 INFO L93 Difference]: Finished difference Result 1375 states and 3401 transitions. [2022-01-18 13:28:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:28:52,795 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:52,797 INFO L225 Difference]: With dead ends: 1375 [2022-01-18 13:28:52,797 INFO L226 Difference]: Without dead ends: 1277 [2022-01-18 13:28:52,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=3045, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:28:52,797 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 323 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:52,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2894 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:28:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-01-18 13:28:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1103. [2022-01-18 13:28:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4909255898366607) internal successors, (2745), 1102 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-01-18 13:28:52,808 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-01-18 13:28:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:52,809 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-01-18 13:28:52,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-01-18 13:28:52,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:52,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:52,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:52,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-01-18 13:28:52,810 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash 260620204, now seen corresponding path program 197 times [2022-01-18 13:28:52,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:52,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62342056] [2022-01-18 13:28:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:52,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:53,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:53,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62342056] [2022-01-18 13:28:53,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62342056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:53,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:53,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:28:53,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585923050] [2022-01-18 13:28:53,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:53,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:28:53,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:53,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:28:53,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:28:53,092 INFO L87 Difference]: Start difference. First operand 1103 states and 2745 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:54,342 INFO L93 Difference]: Finished difference Result 1331 states and 3284 transitions. [2022-01-18 13:28:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:28:54,343 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:54,344 INFO L225 Difference]: With dead ends: 1331 [2022-01-18 13:28:54,344 INFO L226 Difference]: Without dead ends: 1196 [2022-01-18 13:28:54,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=2939, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:28:54,345 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 325 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:54,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2878 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:28:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-01-18 13:28:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1079. [2022-01-18 13:28:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.485157699443414) internal successors, (2679), 1078 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2679 transitions. [2022-01-18 13:28:54,360 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2679 transitions. Word has length 79 [2022-01-18 13:28:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:54,360 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2679 transitions. [2022-01-18 13:28:54,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2679 transitions. [2022-01-18 13:28:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:54,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:54,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:54,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-01-18 13:28:54,362 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1107385360, now seen corresponding path program 198 times [2022-01-18 13:28:54,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:54,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044928424] [2022-01-18 13:28:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:54,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:54,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:54,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044928424] [2022-01-18 13:28:54,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044928424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:54,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:54,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:54,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156009838] [2022-01-18 13:28:54,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:54,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:54,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:54,612 INFO L87 Difference]: Start difference. First operand 1079 states and 2679 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:55,565 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-01-18 13:28:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:28:55,566 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:55,567 INFO L225 Difference]: With dead ends: 1295 [2022-01-18 13:28:55,567 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 13:28:55,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=206, Invalid=2244, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:28:55,567 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 298 mSDsluCounter, 2628 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:55,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2658 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 13:28:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1055. [2022-01-18 13:28:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 2.48292220113852) internal successors, (2617), 1054 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-01-18 13:28:55,576 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-01-18 13:28:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:55,576 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-01-18 13:28:55,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-01-18 13:28:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:55,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:55,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:55,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-01-18 13:28:55,578 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash 878106760, now seen corresponding path program 199 times [2022-01-18 13:28:55,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348749284] [2022-01-18 13:28:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:55,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:55,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:55,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348749284] [2022-01-18 13:28:55,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348749284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:55,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:55,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:28:55,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634850768] [2022-01-18 13:28:55,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:55,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:28:55,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:28:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:28:55,856 INFO L87 Difference]: Start difference. First operand 1055 states and 2617 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:56,700 INFO L93 Difference]: Finished difference Result 1310 states and 3220 transitions. [2022-01-18 13:28:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:28:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:56,702 INFO L225 Difference]: With dead ends: 1310 [2022-01-18 13:28:56,702 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 13:28:56,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:28:56,702 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 274 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:56,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2716 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:28:56,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 13:28:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-01-18 13:28:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.4826589595375723) internal successors, (2577), 1038 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-01-18 13:28:56,711 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-01-18 13:28:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:56,711 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-01-18 13:28:56,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-01-18 13:28:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:56,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:56,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:56,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-01-18 13:28:56,712 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash -817748414, now seen corresponding path program 200 times [2022-01-18 13:28:56,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:56,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532101536] [2022-01-18 13:28:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:56,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:57,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:57,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532101536] [2022-01-18 13:28:57,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532101536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:57,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:57,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:57,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919948170] [2022-01-18 13:28:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:57,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:57,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:57,005 INFO L87 Difference]: Start difference. First operand 1039 states and 2577 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:28:58,189 INFO L93 Difference]: Finished difference Result 1355 states and 3346 transitions. [2022-01-18 13:28:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:28:58,190 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:28:58,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:28:58,191 INFO L225 Difference]: With dead ends: 1355 [2022-01-18 13:28:58,191 INFO L226 Difference]: Without dead ends: 1257 [2022-01-18 13:28:58,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:28:58,192 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 296 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:28:58,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2795 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:28:58,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-01-18 13:28:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1099. [2022-01-18 13:28:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:28:58,201 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:28:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:28:58,201 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:28:58,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:28:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:28:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:28:58,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:28:58,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:28:58,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-01-18 13:28:58,202 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:28:58,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:28:58,203 INFO L85 PathProgramCache]: Analyzing trace with hash 498784478, now seen corresponding path program 201 times [2022-01-18 13:28:58,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:28:58,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952359117] [2022-01-18 13:28:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:28:58,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:28:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:28:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:28:58,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:28:58,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952359117] [2022-01-18 13:28:58,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952359117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:28:58,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:28:58,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:28:58,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801233549] [2022-01-18 13:28:58,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:28:58,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:28:58,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:28:58,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:28:58,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:28:58,452 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:01,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:01,585 INFO L93 Difference]: Finished difference Result 1311 states and 3229 transitions. [2022-01-18 13:29:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:29:01,585 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:01,587 INFO L225 Difference]: With dead ends: 1311 [2022-01-18 13:29:01,587 INFO L226 Difference]: Without dead ends: 1176 [2022-01-18 13:29:01,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:29:01,587 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 330 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:01,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2511 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 973 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:29:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-01-18 13:29:01,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1075. [2022-01-18 13:29:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 13:29:01,597 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 13:29:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:01,597 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 13:29:01,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 13:29:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:01,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:01,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:01,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-01-18 13:29:01,598 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash -869221086, now seen corresponding path program 202 times [2022-01-18 13:29:01,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:01,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108551391] [2022-01-18 13:29:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:01,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:01,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:01,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108551391] [2022-01-18 13:29:01,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108551391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:01,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:01,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:29:01,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835199454] [2022-01-18 13:29:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:01,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:29:01,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:01,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:29:01,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:29:01,887 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:03,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:03,220 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-01-18 13:29:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:29:03,220 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:03,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:03,222 INFO L225 Difference]: With dead ends: 1275 [2022-01-18 13:29:03,222 INFO L226 Difference]: Without dead ends: 1095 [2022-01-18 13:29:03,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:29:03,222 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 301 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:03,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2293 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:29:03,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-01-18 13:29:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1051. [2022-01-18 13:29:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.481904761904762) internal successors, (2606), 1050 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2606 transitions. [2022-01-18 13:29:03,231 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2606 transitions. Word has length 79 [2022-01-18 13:29:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:03,231 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2606 transitions. [2022-01-18 13:29:03,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2606 transitions. [2022-01-18 13:29:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:03,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:03,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:03,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-01-18 13:29:03,232 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1116271034, now seen corresponding path program 203 times [2022-01-18 13:29:03,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:03,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461817439] [2022-01-18 13:29:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:03,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:03,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:03,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461817439] [2022-01-18 13:29:03,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461817439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:03,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:03,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 13:29:03,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383355861] [2022-01-18 13:29:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:03,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:29:03,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:29:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:29:03,511 INFO L87 Difference]: Start difference. First operand 1051 states and 2606 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:04,247 INFO L93 Difference]: Finished difference Result 1298 states and 3187 transitions. [2022-01-18 13:29:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 13:29:04,247 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:04,248 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 13:29:04,248 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 13:29:04,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:29:04,249 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 272 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:04,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2433 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:29:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 13:29:04,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1047. [2022-01-18 13:29:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.480879541108987) internal successors, (2595), 1046 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2595 transitions. [2022-01-18 13:29:04,257 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2595 transitions. Word has length 79 [2022-01-18 13:29:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:04,257 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2595 transitions. [2022-01-18 13:29:04,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2595 transitions. [2022-01-18 13:29:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:04,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:04,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:04,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-01-18 13:29:04,259 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:04,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1223629364, now seen corresponding path program 204 times [2022-01-18 13:29:04,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:04,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953067783] [2022-01-18 13:29:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:04,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:04,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:04,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953067783] [2022-01-18 13:29:04,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953067783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:04,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:04,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 13:29:04,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060180329] [2022-01-18 13:29:04,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:04,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:29:04,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:29:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:29:04,510 INFO L87 Difference]: Start difference. First operand 1047 states and 2595 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:05,206 INFO L93 Difference]: Finished difference Result 1316 states and 3224 transitions. [2022-01-18 13:29:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 13:29:05,207 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:05,208 INFO L225 Difference]: With dead ends: 1316 [2022-01-18 13:29:05,208 INFO L226 Difference]: Without dead ends: 1015 [2022-01-18 13:29:05,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 13:29:05,208 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 299 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:05,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2211 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:29:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-01-18 13:29:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 999. [2022-01-18 13:29:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 2.4839679358717435) internal successors, (2479), 998 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2479 transitions. [2022-01-18 13:29:05,231 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2479 transitions. Word has length 79 [2022-01-18 13:29:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:05,231 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 2479 transitions. [2022-01-18 13:29:05,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2479 transitions. [2022-01-18 13:29:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:05,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:05,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:05,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-01-18 13:29:05,232 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:05,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:05,233 INFO L85 PathProgramCache]: Analyzing trace with hash -183029144, now seen corresponding path program 205 times [2022-01-18 13:29:05,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:05,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428588490] [2022-01-18 13:29:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:05,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:05,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:05,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428588490] [2022-01-18 13:29:05,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428588490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:05,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:05,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:29:05,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500587066] [2022-01-18 13:29:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:05,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:29:05,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:29:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:29:05,532 INFO L87 Difference]: Start difference. First operand 999 states and 2479 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:07,933 INFO L93 Difference]: Finished difference Result 1353 states and 3382 transitions. [2022-01-18 13:29:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 13:29:07,933 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:07,935 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:29:07,935 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 13:29:07,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=3610, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:29:07,937 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 341 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:07,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3224 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 13:29:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 13:29:07,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1087. [2022-01-18 13:29:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.498158379373849) internal successors, (2713), 1086 states have internal predecessors, (2713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-01-18 13:29:07,946 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-01-18 13:29:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:07,947 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-01-18 13:29:07,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-01-18 13:29:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:07,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:07,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:07,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-01-18 13:29:07,948 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1036420310, now seen corresponding path program 206 times [2022-01-18 13:29:07,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:07,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626048995] [2022-01-18 13:29:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:07,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:08,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:08,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626048995] [2022-01-18 13:29:08,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626048995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:08,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:08,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:29:08,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834284337] [2022-01-18 13:29:08,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:08,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:29:08,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:29:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:29:08,241 INFO L87 Difference]: Start difference. First operand 1087 states and 2713 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:10,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:11,603 INFO L93 Difference]: Finished difference Result 1352 states and 3373 transitions. [2022-01-18 13:29:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 13:29:11,603 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:11,604 INFO L225 Difference]: With dead ends: 1352 [2022-01-18 13:29:11,604 INFO L226 Difference]: Without dead ends: 1254 [2022-01-18 13:29:11,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=295, Invalid=3487, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:29:11,605 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 314 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:11,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 3210 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 13:29:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-01-18 13:29:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1091. [2022-01-18 13:29:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4954128440366974) internal successors, (2720), 1090 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-01-18 13:29:11,615 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-01-18 13:29:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:11,615 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-01-18 13:29:11,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-01-18 13:29:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:11,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:11,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:11,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-01-18 13:29:11,616 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash -322183032, now seen corresponding path program 207 times [2022-01-18 13:29:11,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:11,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678556985] [2022-01-18 13:29:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:11,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:11,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:11,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678556985] [2022-01-18 13:29:11,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678556985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:11,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:11,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:29:11,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716849938] [2022-01-18 13:29:11,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:11,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:29:11,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:11,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:29:11,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:29:11,932 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:15,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:15,791 INFO L93 Difference]: Finished difference Result 1335 states and 3324 transitions. [2022-01-18 13:29:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:29:15,791 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:15,793 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 13:29:15,793 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 13:29:15,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=295, Invalid=3487, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:29:15,793 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 384 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:15,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 3004 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1191 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-01-18 13:29:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 13:29:15,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1079. [2022-01-18 13:29:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.4925788497217067) internal successors, (2687), 1078 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-01-18 13:29:15,803 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-01-18 13:29:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:15,803 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-01-18 13:29:15,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-01-18 13:29:15,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:15,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:15,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:15,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-01-18 13:29:15,804 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:15,805 INFO L85 PathProgramCache]: Analyzing trace with hash 3265194, now seen corresponding path program 208 times [2022-01-18 13:29:15,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:15,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479916830] [2022-01-18 13:29:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:15,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:16,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:16,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479916830] [2022-01-18 13:29:16,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479916830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:16,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:16,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:29:16,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254494170] [2022-01-18 13:29:16,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:16,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:29:16,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:16,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:29:16,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:29:16,106 INFO L87 Difference]: Start difference. First operand 1079 states and 2687 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:18,810 INFO L93 Difference]: Finished difference Result 1341 states and 3333 transitions. [2022-01-18 13:29:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:29:18,810 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:18,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:18,811 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 13:29:18,811 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:29:18,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=3271, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 13:29:18,812 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 365 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:18,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 2860 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 13:29:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:29:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1075. [2022-01-18 13:29:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:29:18,821 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:29:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:18,821 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:29:18,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:29:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:18,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:18,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:18,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-01-18 13:29:18,822 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash 864847528, now seen corresponding path program 209 times [2022-01-18 13:29:18,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:18,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20368318] [2022-01-18 13:29:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:18,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:19,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:19,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20368318] [2022-01-18 13:29:19,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20368318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:19,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:19,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:19,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775964015] [2022-01-18 13:29:19,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:19,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:19,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:19,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:19,097 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:22,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:23,498 INFO L93 Difference]: Finished difference Result 1330 states and 3300 transitions. [2022-01-18 13:29:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:29:23,499 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:23,500 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 13:29:23,501 INFO L226 Difference]: Without dead ends: 1232 [2022-01-18 13:29:23,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=266, Invalid=2926, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:29:23,501 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 336 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:23,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2879 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-18 13:29:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-01-18 13:29:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1099. [2022-01-18 13:29:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:29:23,511 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:29:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:23,512 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:29:23,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:29:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:23,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:23,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:23,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-01-18 13:29:23,513 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:23,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:23,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2113586876, now seen corresponding path program 210 times [2022-01-18 13:29:23,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:23,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743970409] [2022-01-18 13:29:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:23,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:23,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:23,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743970409] [2022-01-18 13:29:23,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743970409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:23,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:23,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:23,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619925198] [2022-01-18 13:29:23,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:23,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:23,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:23,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:23,781 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:26,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:28,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:29,070 INFO L93 Difference]: Finished difference Result 1338 states and 3306 transitions. [2022-01-18 13:29:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:29:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:29,071 INFO L225 Difference]: With dead ends: 1338 [2022-01-18 13:29:29,071 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 13:29:29,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=267, Invalid=3039, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:29:29,072 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 368 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:29,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 2713 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1077 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-01-18 13:29:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 13:29:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1091. [2022-01-18 13:29:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:29,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-01-18 13:29:29,081 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-01-18 13:29:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:29,081 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-01-18 13:29:29,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-01-18 13:29:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:29,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:29,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:29,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-01-18 13:29:29,083 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 956407842, now seen corresponding path program 211 times [2022-01-18 13:29:29,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:29,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669210881] [2022-01-18 13:29:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:29,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:29,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:29,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669210881] [2022-01-18 13:29:29,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669210881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:29,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:29,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:29,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194505558] [2022-01-18 13:29:29,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:29,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:29,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:29,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:29,362 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:30,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:30,807 INFO L93 Difference]: Finished difference Result 1392 states and 3454 transitions. [2022-01-18 13:29:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:29:30,808 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:30,809 INFO L225 Difference]: With dead ends: 1392 [2022-01-18 13:29:30,809 INFO L226 Difference]: Without dead ends: 1213 [2022-01-18 13:29:30,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=3138, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:29:30,810 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 347 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:30,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2732 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:29:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2022-01-18 13:29:30,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1083. [2022-01-18 13:29:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4861367837338264) internal successors, (2690), 1082 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-01-18 13:29:30,823 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-01-18 13:29:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:30,823 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-01-18 13:29:30,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-01-18 13:29:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:30,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:30,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:30,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-01-18 13:29:30,825 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:30,825 INFO L85 PathProgramCache]: Analyzing trace with hash 158581418, now seen corresponding path program 212 times [2022-01-18 13:29:30,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:30,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296048044] [2022-01-18 13:29:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:30,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:31,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:31,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296048044] [2022-01-18 13:29:31,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296048044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:31,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:31,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:31,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534473738] [2022-01-18 13:29:31,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:31,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:31,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:31,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:31,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:31,113 INFO L87 Difference]: Start difference. First operand 1083 states and 2690 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:32,410 INFO L93 Difference]: Finished difference Result 1297 states and 3212 transitions. [2022-01-18 13:29:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:29:32,411 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:32,412 INFO L225 Difference]: With dead ends: 1297 [2022-01-18 13:29:32,412 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 13:29:32,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=2622, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:29:32,413 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 286 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:32,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2912 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:29:32,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 13:29:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1087. [2022-01-18 13:29:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1086 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2697 transitions. [2022-01-18 13:29:32,422 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2697 transitions. Word has length 79 [2022-01-18 13:29:32,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:32,422 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2697 transitions. [2022-01-18 13:29:32,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:32,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2697 transitions. [2022-01-18 13:29:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:32,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:32,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:32,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-01-18 13:29:32,423 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash -208313012, now seen corresponding path program 213 times [2022-01-18 13:29:32,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:32,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392802799] [2022-01-18 13:29:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:32,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:32,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:32,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392802799] [2022-01-18 13:29:32,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392802799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:32,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:32,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:32,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225574859] [2022-01-18 13:29:32,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:32,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:32,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:32,728 INFO L87 Difference]: Start difference. First operand 1087 states and 2697 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:34,326 INFO L93 Difference]: Finished difference Result 1308 states and 3236 transitions. [2022-01-18 13:29:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:29:34,327 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:34,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:34,328 INFO L225 Difference]: With dead ends: 1308 [2022-01-18 13:29:34,328 INFO L226 Difference]: Without dead ends: 1210 [2022-01-18 13:29:34,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:29:34,329 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 333 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:34,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2762 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:29:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-01-18 13:29:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1091. [2022-01-18 13:29:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4807339449541286) internal successors, (2704), 1090 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2704 transitions. [2022-01-18 13:29:34,338 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2704 transitions. Word has length 79 [2022-01-18 13:29:34,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:34,338 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2704 transitions. [2022-01-18 13:29:34,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2704 transitions. [2022-01-18 13:29:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:34,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:34,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:34,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-01-18 13:29:34,340 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:34,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash 505924266, now seen corresponding path program 214 times [2022-01-18 13:29:34,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:34,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29256517] [2022-01-18 13:29:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:34,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:34,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:34,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29256517] [2022-01-18 13:29:34,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29256517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:34,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:34,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:34,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283881898] [2022-01-18 13:29:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:34,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:34,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:34,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:34,645 INFO L87 Difference]: Start difference. First operand 1091 states and 2704 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:36,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:37,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:38,152 INFO L93 Difference]: Finished difference Result 1276 states and 3152 transitions. [2022-01-18 13:29:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:29:38,153 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:38,154 INFO L225 Difference]: With dead ends: 1276 [2022-01-18 13:29:38,154 INFO L226 Difference]: Without dead ends: 1167 [2022-01-18 13:29:38,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=2717, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:29:38,155 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 309 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:38,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2794 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 13:29:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-01-18 13:29:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1083. [2022-01-18 13:29:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4824399260628467) internal successors, (2686), 1082 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:38,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2686 transitions. [2022-01-18 13:29:38,164 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2686 transitions. Word has length 79 [2022-01-18 13:29:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:38,164 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2686 transitions. [2022-01-18 13:29:38,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2686 transitions. [2022-01-18 13:29:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:38,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:38,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:38,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-01-18 13:29:38,165 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash 976615080, now seen corresponding path program 215 times [2022-01-18 13:29:38,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:38,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986816141] [2022-01-18 13:29:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:38,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:38,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986816141] [2022-01-18 13:29:38,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986816141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:38,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:38,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:38,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4292103] [2022-01-18 13:29:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:38,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:38,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:38,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:38,446 INFO L87 Difference]: Start difference. First operand 1083 states and 2686 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:39,693 INFO L93 Difference]: Finished difference Result 1261 states and 3117 transitions. [2022-01-18 13:29:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:29:39,693 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:39,695 INFO L225 Difference]: With dead ends: 1261 [2022-01-18 13:29:39,695 INFO L226 Difference]: Without dead ends: 1143 [2022-01-18 13:29:39,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2712, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:29:39,695 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 321 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:39,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2516 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:29:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-01-18 13:29:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1063. [2022-01-18 13:29:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 13:29:39,704 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 13:29:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:39,704 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 13:29:39,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 13:29:39,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:39,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:39,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:39,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-01-18 13:29:39,705 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:39,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:39,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1810498950, now seen corresponding path program 216 times [2022-01-18 13:29:39,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:39,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863737698] [2022-01-18 13:29:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:39,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:39,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:39,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863737698] [2022-01-18 13:29:39,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863737698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:39,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:39,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:29:39,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380627167] [2022-01-18 13:29:39,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:39,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:29:39,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:29:39,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:29:39,999 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:41,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:41,682 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-01-18 13:29:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:29:41,683 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:41,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:41,684 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 13:29:41,684 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 13:29:41,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=299, Invalid=3607, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:29:41,685 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 372 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:41,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 2978 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:29:41,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 13:29:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-01-18 13:29:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-01-18 13:29:41,694 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-01-18 13:29:41,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:41,695 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-01-18 13:29:41,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-01-18 13:29:41,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:41,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:41,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:41,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-01-18 13:29:41,696 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:41,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1167935454, now seen corresponding path program 217 times [2022-01-18 13:29:41,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:41,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104793962] [2022-01-18 13:29:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:41,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:41,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:41,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104793962] [2022-01-18 13:29:41,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104793962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:41,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:41,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:29:41,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843653043] [2022-01-18 13:29:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:41,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:29:41,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:29:41,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:29:41,987 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:43,549 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-01-18 13:29:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:29:43,549 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:43,551 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 13:29:43,551 INFO L226 Difference]: Without dead ends: 1182 [2022-01-18 13:29:43,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=291, Invalid=3491, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:29:43,551 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 334 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:43,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 3371 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:29:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-18 13:29:43,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-01-18 13:29:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4859287054409007) internal successors, (2650), 1066 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-01-18 13:29:43,561 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-01-18 13:29:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:43,561 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-01-18 13:29:43,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-01-18 13:29:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:43,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:43,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:43,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-01-18 13:29:43,563 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1996516812, now seen corresponding path program 218 times [2022-01-18 13:29:43,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:43,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928838078] [2022-01-18 13:29:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:43,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:43,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:43,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928838078] [2022-01-18 13:29:43,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928838078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:43,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:43,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:43,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57937302] [2022-01-18 13:29:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:43,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:43,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:43,868 INFO L87 Difference]: Start difference. First operand 1067 states and 2650 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:45,326 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-01-18 13:29:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:29:45,326 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:45,327 INFO L225 Difference]: With dead ends: 1305 [2022-01-18 13:29:45,327 INFO L226 Difference]: Without dead ends: 1131 [2022-01-18 13:29:45,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:29:45,328 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 343 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:45,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2887 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:29:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-01-18 13:29:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-01-18 13:29:45,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 13:29:45,337 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 13:29:45,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:45,337 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 13:29:45,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 13:29:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:45,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:45,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:45,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-01-18 13:29:45,338 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:45,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:45,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1856760466, now seen corresponding path program 219 times [2022-01-18 13:29:45,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:45,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040532034] [2022-01-18 13:29:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:45,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:45,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:45,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040532034] [2022-01-18 13:29:45,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040532034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:45,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:45,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:45,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673840932] [2022-01-18 13:29:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:45,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:45,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:45,610 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:47,423 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-01-18 13:29:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:29:47,423 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:47,425 INFO L225 Difference]: With dead ends: 1339 [2022-01-18 13:29:47,425 INFO L226 Difference]: Without dead ends: 1241 [2022-01-18 13:29:47,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:29:47,425 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 333 mSDsluCounter, 2876 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:47,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2926 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:29:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-01-18 13:29:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1099. [2022-01-18 13:29:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:29:47,434 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:29:47,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:47,435 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:29:47,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:29:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:47,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:47,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:47,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-01-18 13:29:47,436 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:47,436 INFO L85 PathProgramCache]: Analyzing trace with hash -540227574, now seen corresponding path program 220 times [2022-01-18 13:29:47,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:47,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88949355] [2022-01-18 13:29:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:47,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:47,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88949355] [2022-01-18 13:29:47,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88949355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:47,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:47,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:47,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104013946] [2022-01-18 13:29:47,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:47,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:47,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:47,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:47,698 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:49,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:49,145 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-01-18 13:29:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:29:49,145 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:49,146 INFO L225 Difference]: With dead ends: 1307 [2022-01-18 13:29:49,146 INFO L226 Difference]: Without dead ends: 1172 [2022-01-18 13:29:49,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=2829, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:29:49,147 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 332 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:49,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2892 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:29:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-01-18 13:29:49,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2022-01-18 13:29:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 13:29:49,157 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 13:29:49,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:49,157 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 13:29:49,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 13:29:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:49,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:49,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:49,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-01-18 13:29:49,158 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1908233138, now seen corresponding path program 221 times [2022-01-18 13:29:49,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:49,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739546593] [2022-01-18 13:29:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:49,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:49,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:49,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739546593] [2022-01-18 13:29:49,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739546593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:49,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:49,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:29:49,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367977562] [2022-01-18 13:29:49,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:49,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:29:49,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:49,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:29:49,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:29:49,405 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:50,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:29:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:51,579 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-01-18 13:29:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:29:51,579 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:51,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:51,580 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 13:29:51,580 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 13:29:51,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:29:51,581 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 287 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:51,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2791 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 13:29:51,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 13:29:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1027. [2022-01-18 13:29:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.483430799220273) internal successors, (2548), 1026 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2548 transitions. [2022-01-18 13:29:51,590 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2548 transitions. Word has length 79 [2022-01-18 13:29:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:51,590 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2548 transitions. [2022-01-18 13:29:51,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2548 transitions. [2022-01-18 13:29:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:51,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:51,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:51,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-01-18 13:29:51,591 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1023336312, now seen corresponding path program 222 times [2022-01-18 13:29:51,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:51,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400482332] [2022-01-18 13:29:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:51,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:51,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:51,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400482332] [2022-01-18 13:29:51,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400482332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:51,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:51,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:29:51,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910663872] [2022-01-18 13:29:51,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:51,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:29:51,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:51,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:29:51,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:29:51,854 INFO L87 Difference]: Start difference. First operand 1027 states and 2548 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:52,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:52,755 INFO L93 Difference]: Finished difference Result 1249 states and 3092 transitions. [2022-01-18 13:29:52,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:29:52,755 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:52,757 INFO L225 Difference]: With dead ends: 1249 [2022-01-18 13:29:52,757 INFO L226 Difference]: Without dead ends: 1135 [2022-01-18 13:29:52,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:29:52,757 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 282 mSDsluCounter, 2460 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:52,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 2523 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:29:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-01-18 13:29:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1063. [2022-01-18 13:29:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4887005649717513) internal successors, (2643), 1062 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 13:29:52,766 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 13:29:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:52,766 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 13:29:52,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 13:29:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:52,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:52,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:52,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-01-18 13:29:52,767 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:52,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1390230742, now seen corresponding path program 223 times [2022-01-18 13:29:52,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:52,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266455377] [2022-01-18 13:29:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:52,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:53,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:53,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266455377] [2022-01-18 13:29:53,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266455377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:53,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:53,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:29:53,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852138214] [2022-01-18 13:29:53,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:53,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:29:53,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:53,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:29:53,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:29:53,045 INFO L87 Difference]: Start difference. First operand 1063 states and 2643 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:54,020 INFO L93 Difference]: Finished difference Result 1260 states and 3116 transitions. [2022-01-18 13:29:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:29:54,020 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:54,022 INFO L225 Difference]: With dead ends: 1260 [2022-01-18 13:29:54,022 INFO L226 Difference]: Without dead ends: 1162 [2022-01-18 13:29:54,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=2141, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:29:54,022 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 258 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:54,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2714 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:29:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-18 13:29:54,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1067. [2022-01-18 13:29:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4859287054409007) internal successors, (2650), 1066 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-01-18 13:29:54,033 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-01-18 13:29:54,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:54,033 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-01-18 13:29:54,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-01-18 13:29:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:54,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:54,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:54,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-01-18 13:29:54,043 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash -675993464, now seen corresponding path program 224 times [2022-01-18 13:29:54,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:54,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035325547] [2022-01-18 13:29:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:54,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:54,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:54,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035325547] [2022-01-18 13:29:54,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035325547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:54,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:54,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:29:54,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759123907] [2022-01-18 13:29:54,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:54,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:29:54,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:54,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:29:54,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:29:54,313 INFO L87 Difference]: Start difference. First operand 1067 states and 2650 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:55,255 INFO L93 Difference]: Finished difference Result 1228 states and 3032 transitions. [2022-01-18 13:29:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:29:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:55,256 INFO L225 Difference]: With dead ends: 1228 [2022-01-18 13:29:55,256 INFO L226 Difference]: Without dead ends: 1119 [2022-01-18 13:29:55,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:29:55,258 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 286 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:55,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2529 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:29:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-01-18 13:29:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1059. [2022-01-18 13:29:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 13:29:55,267 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 13:29:55,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:55,267 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 13:29:55,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 13:29:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:55,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:55,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:55,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-01-18 13:29:55,268 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:55,269 INFO L85 PathProgramCache]: Analyzing trace with hash -205302650, now seen corresponding path program 225 times [2022-01-18 13:29:55,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:55,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402798483] [2022-01-18 13:29:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:55,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:55,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:55,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402798483] [2022-01-18 13:29:55,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402798483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:55,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:55,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:29:55,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751342197] [2022-01-18 13:29:55,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:55,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:29:55,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:55,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:29:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:29:55,534 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:56,925 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-01-18 13:29:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:29:56,925 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:56,927 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 13:29:56,927 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 13:29:56,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=2229, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:29:56,927 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 280 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:56,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2545 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:29:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 13:29:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1083. [2022-01-18 13:29:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4861367837338264) internal successors, (2690), 1082 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-01-18 13:29:56,939 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-01-18 13:29:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:56,939 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-01-18 13:29:56,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-01-18 13:29:56,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:56,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:56,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:56,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-01-18 13:29:56,941 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:56,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1111230242, now seen corresponding path program 226 times [2022-01-18 13:29:56,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:56,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227515355] [2022-01-18 13:29:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:56,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:57,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:57,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227515355] [2022-01-18 13:29:57,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227515355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:57,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:57,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:29:57,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155685553] [2022-01-18 13:29:57,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:57,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:29:57,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:29:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:29:57,222 INFO L87 Difference]: Start difference. First operand 1083 states and 2690 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:58,176 INFO L93 Difference]: Finished difference Result 1250 states and 3080 transitions. [2022-01-18 13:29:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:29:58,176 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:58,178 INFO L225 Difference]: With dead ends: 1250 [2022-01-18 13:29:58,178 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 13:29:58,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:29:58,178 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 279 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:58,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2644 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:29:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 13:29:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-01-18 13:29:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 13:29:58,187 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 13:29:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:58,187 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 13:29:58,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 13:29:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:58,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:58,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:58,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-01-18 13:29:58,188 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash 628581220, now seen corresponding path program 227 times [2022-01-18 13:29:58,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:58,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387417614] [2022-01-18 13:29:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:58,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:58,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:58,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387417614] [2022-01-18 13:29:58,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387417614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:58,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:58,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:58,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761244203] [2022-01-18 13:29:58,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:58,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:58,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:58,463 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:29:59,691 INFO L93 Difference]: Finished difference Result 1325 states and 3276 transitions. [2022-01-18 13:29:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:29:59,692 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:29:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:29:59,693 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 13:29:59,693 INFO L226 Difference]: Without dead ends: 1227 [2022-01-18 13:29:59,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=2828, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:29:59,694 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 313 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:29:59,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2820 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:29:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-01-18 13:29:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1079. [2022-01-18 13:29:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.485157699443414) internal successors, (2679), 1078 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2679 transitions. [2022-01-18 13:29:59,703 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2679 transitions. Word has length 79 [2022-01-18 13:29:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:29:59,703 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2679 transitions. [2022-01-18 13:29:59,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:29:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2679 transitions. [2022-01-18 13:29:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:29:59,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:29:59,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:29:59,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-01-18 13:29:59,704 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:29:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:29:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1945114112, now seen corresponding path program 228 times [2022-01-18 13:29:59,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:29:59,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719607972] [2022-01-18 13:29:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:29:59,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:29:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:29:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:29:59,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:29:59,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719607972] [2022-01-18 13:29:59,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719607972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:29:59,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:29:59,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:29:59,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044673380] [2022-01-18 13:29:59,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:29:59,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:29:59,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:29:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:29:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:29:59,972 INFO L87 Difference]: Start difference. First operand 1079 states and 2679 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:01,105 INFO L93 Difference]: Finished difference Result 1281 states and 3159 transitions. [2022-01-18 13:30:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:30:01,106 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:01,107 INFO L225 Difference]: With dead ends: 1281 [2022-01-18 13:30:01,107 INFO L226 Difference]: Without dead ends: 1146 [2022-01-18 13:30:01,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:30:01,108 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 297 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:01,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2931 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-01-18 13:30:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1055. [2022-01-18 13:30:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1054 states have (on average 2.48292220113852) internal successors, (2617), 1054 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-01-18 13:30:01,117 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-01-18 13:30:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:01,117 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-01-18 13:30:01,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-01-18 13:30:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:01,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:01,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:01,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-01-18 13:30:01,118 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:01,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:01,118 INFO L85 PathProgramCache]: Analyzing trace with hash 814599082, now seen corresponding path program 229 times [2022-01-18 13:30:01,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:01,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442076789] [2022-01-18 13:30:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:01,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:01,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:01,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442076789] [2022-01-18 13:30:01,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442076789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:01,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:01,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:01,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842839936] [2022-01-18 13:30:01,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:01,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:01,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:01,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:01,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:01,387 INFO L87 Difference]: Start difference. First operand 1055 states and 2617 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:02,382 INFO L93 Difference]: Finished difference Result 1269 states and 3126 transitions. [2022-01-18 13:30:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:30:02,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:02,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:02,384 INFO L225 Difference]: With dead ends: 1269 [2022-01-18 13:30:02,384 INFO L226 Difference]: Without dead ends: 1103 [2022-01-18 13:30:02,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:30:02,384 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 317 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:02,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2601 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:02,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-01-18 13:30:02,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-01-18 13:30:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.4847036328871894) internal successors, (2599), 1046 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2599 transitions. [2022-01-18 13:30:02,393 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2599 transitions. Word has length 79 [2022-01-18 13:30:02,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:02,393 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2599 transitions. [2022-01-18 13:30:02,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2599 transitions. [2022-01-18 13:30:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:02,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:02,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:02,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-01-18 13:30:02,395 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1018020498, now seen corresponding path program 230 times [2022-01-18 13:30:02,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:02,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266215309] [2022-01-18 13:30:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:02,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:02,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:02,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266215309] [2022-01-18 13:30:02,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266215309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:02,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:02,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:02,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994384547] [2022-01-18 13:30:02,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:02,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:02,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:02,674 INFO L87 Difference]: Start difference. First operand 1047 states and 2599 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:03,952 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-01-18 13:30:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:30:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:03,954 INFO L225 Difference]: With dead ends: 1327 [2022-01-18 13:30:03,954 INFO L226 Difference]: Without dead ends: 1229 [2022-01-18 13:30:03,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:30:03,954 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 288 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:03,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 3151 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:30:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-01-18 13:30:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1095. [2022-01-18 13:30:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.489031078610603) internal successors, (2723), 1094 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-01-18 13:30:03,964 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-01-18 13:30:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:03,964 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-01-18 13:30:03,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:03,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-01-18 13:30:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:03,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:03,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:03,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-01-18 13:30:03,965 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:03,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash 298512394, now seen corresponding path program 231 times [2022-01-18 13:30:03,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:03,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132013876] [2022-01-18 13:30:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:03,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:04,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:04,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132013876] [2022-01-18 13:30:04,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132013876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:04,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:04,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:04,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324808534] [2022-01-18 13:30:04,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:04,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:04,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:04,257 INFO L87 Difference]: Start difference. First operand 1095 states and 2723 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:05,388 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-01-18 13:30:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:30:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:05,390 INFO L225 Difference]: With dead ends: 1295 [2022-01-18 13:30:05,390 INFO L226 Difference]: Without dead ends: 1160 [2022-01-18 13:30:05,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:30:05,391 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 303 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:05,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2984 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:30:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-01-18 13:30:05,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1071. [2022-01-18 13:30:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4831775700934577) internal successors, (2657), 1070 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2657 transitions. [2022-01-18 13:30:05,400 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2657 transitions. Word has length 79 [2022-01-18 13:30:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:05,400 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2657 transitions. [2022-01-18 13:30:05,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2657 transitions. [2022-01-18 13:30:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:05,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:05,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:05,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-01-18 13:30:05,401 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1069493170, now seen corresponding path program 232 times [2022-01-18 13:30:05,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:05,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182465811] [2022-01-18 13:30:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:05,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:05,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:05,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182465811] [2022-01-18 13:30:05,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182465811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:05,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:05,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:05,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942057510] [2022-01-18 13:30:05,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:05,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:05,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:05,676 INFO L87 Difference]: Start difference. First operand 1071 states and 2657 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:06,666 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-01-18 13:30:06,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:30:06,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:06,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:06,668 INFO L225 Difference]: With dead ends: 1271 [2022-01-18 13:30:06,668 INFO L226 Difference]: Without dead ends: 1083 [2022-01-18 13:30:06,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:30:06,668 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 275 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:06,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2753 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-01-18 13:30:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-01-18 13:30:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.4826589595375723) internal successors, (2577), 1038 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-01-18 13:30:06,677 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-01-18 13:30:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:06,677 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-01-18 13:30:06,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-01-18 13:30:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:06,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:06,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:06,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-01-18 13:30:06,678 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1680026352, now seen corresponding path program 233 times [2022-01-18 13:30:06,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:06,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138786125] [2022-01-18 13:30:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:06,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:06,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:06,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138786125] [2022-01-18 13:30:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138786125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:06,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:06,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:30:06,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430255202] [2022-01-18 13:30:06,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:06,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:30:06,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:30:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:30:06,971 INFO L87 Difference]: Start difference. First operand 1039 states and 2577 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:08,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:08,574 INFO L93 Difference]: Finished difference Result 1367 states and 3379 transitions. [2022-01-18 13:30:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:30:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:08,576 INFO L225 Difference]: With dead ends: 1367 [2022-01-18 13:30:08,576 INFO L226 Difference]: Without dead ends: 1269 [2022-01-18 13:30:08,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:30:08,577 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 341 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:08,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3051 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:30:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-01-18 13:30:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1091. [2022-01-18 13:30:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4880733944954128) internal successors, (2712), 1090 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-01-18 13:30:08,587 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-01-18 13:30:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:08,587 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-01-18 13:30:08,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-01-18 13:30:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:08,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:08,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:08,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-01-18 13:30:08,588 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:08,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:08,588 INFO L85 PathProgramCache]: Analyzing trace with hash -363493460, now seen corresponding path program 234 times [2022-01-18 13:30:08,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:08,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943029513] [2022-01-18 13:30:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:08,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:08,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:08,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943029513] [2022-01-18 13:30:08,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943029513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:08,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:08,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:30:08,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988511343] [2022-01-18 13:30:08,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:08,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:30:08,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:08,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:30:08,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:30:08,865 INFO L87 Difference]: Start difference. First operand 1091 states and 2712 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:10,342 INFO L93 Difference]: Finished difference Result 1323 states and 3262 transitions. [2022-01-18 13:30:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:30:10,343 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:10,344 INFO L225 Difference]: With dead ends: 1323 [2022-01-18 13:30:10,344 INFO L226 Difference]: Without dead ends: 1188 [2022-01-18 13:30:10,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=275, Invalid=3385, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:30:10,345 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 327 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:10,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 3020 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:30:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-01-18 13:30:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1067. [2022-01-18 13:30:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4821763602251408) internal successors, (2646), 1066 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2646 transitions. [2022-01-18 13:30:10,354 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2646 transitions. Word has length 79 [2022-01-18 13:30:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:10,354 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2646 transitions. [2022-01-18 13:30:10,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2646 transitions. [2022-01-18 13:30:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:10,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:10,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:10,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-01-18 13:30:10,355 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1731499024, now seen corresponding path program 235 times [2022-01-18 13:30:10,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:10,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973470994] [2022-01-18 13:30:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:10,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:10,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:10,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973470994] [2022-01-18 13:30:10,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973470994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:10,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:10,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:10,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756124072] [2022-01-18 13:30:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:10,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:10,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:10,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:10,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:10,619 INFO L87 Difference]: Start difference. First operand 1067 states and 2646 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:11,694 INFO L93 Difference]: Finished difference Result 1287 states and 3163 transitions. [2022-01-18 13:30:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:30:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:11,696 INFO L225 Difference]: With dead ends: 1287 [2022-01-18 13:30:11,696 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 13:30:11,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=228, Invalid=2634, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:30:11,696 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 316 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:11,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2812 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 13:30:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1043. [2022-01-18 13:30:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 2.4798464491362764) internal successors, (2584), 1042 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 2584 transitions. [2022-01-18 13:30:11,705 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 2584 transitions. Word has length 79 [2022-01-18 13:30:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:11,705 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 2584 transitions. [2022-01-18 13:30:11,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 2584 transitions. [2022-01-18 13:30:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:11,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:11,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:11,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-01-18 13:30:11,707 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash 253993096, now seen corresponding path program 236 times [2022-01-18 13:30:11,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:11,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566245061] [2022-01-18 13:30:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:11,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:11,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:11,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566245061] [2022-01-18 13:30:11,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566245061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:11,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:11,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:11,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16587296] [2022-01-18 13:30:11,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:11,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:11,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:11,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:11,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:11,985 INFO L87 Difference]: Start difference. First operand 1043 states and 2584 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:12,921 INFO L93 Difference]: Finished difference Result 1302 states and 3198 transitions. [2022-01-18 13:30:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:30:12,921 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:12,923 INFO L225 Difference]: With dead ends: 1302 [2022-01-18 13:30:12,923 INFO L226 Difference]: Without dead ends: 1071 [2022-01-18 13:30:12,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:30:12,923 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 292 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:12,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2880 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-01-18 13:30:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1027. [2022-01-18 13:30:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.47953216374269) internal successors, (2544), 1026 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-01-18 13:30:12,932 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-01-18 13:30:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:12,932 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-01-18 13:30:12,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-01-18 13:30:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:12,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:12,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:12,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-01-18 13:30:12,933 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:12,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1441862078, now seen corresponding path program 237 times [2022-01-18 13:30:12,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:12,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731846027] [2022-01-18 13:30:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:12,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:13,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:13,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731846027] [2022-01-18 13:30:13,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731846027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:13,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:13,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:13,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406366024] [2022-01-18 13:30:13,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:13,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:13,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:13,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:13,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:13,208 INFO L87 Difference]: Start difference. First operand 1027 states and 2544 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:15,899 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-01-18 13:30:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:30:15,899 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:15,901 INFO L225 Difference]: With dead ends: 1343 [2022-01-18 13:30:15,901 INFO L226 Difference]: Without dead ends: 1245 [2022-01-18 13:30:15,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=3046, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:30:15,901 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 323 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:15,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2662 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 13:30:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-18 13:30:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1087. [2022-01-18 13:30:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 13:30:15,911 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 13:30:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:15,911 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 13:30:15,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 13:30:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:15,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:15,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:15,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-01-18 13:30:15,912 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -125329186, now seen corresponding path program 238 times [2022-01-18 13:30:15,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:15,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220245427] [2022-01-18 13:30:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:15,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:16,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:16,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220245427] [2022-01-18 13:30:16,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220245427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:16,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:16,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:16,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16586638] [2022-01-18 13:30:16,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:16,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:16,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:16,188 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:17,571 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-01-18 13:30:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:30:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:17,573 INFO L225 Difference]: With dead ends: 1299 [2022-01-18 13:30:17,573 INFO L226 Difference]: Without dead ends: 1164 [2022-01-18 13:30:17,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=2940, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:30:17,573 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 340 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:17,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2930 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:30:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-18 13:30:17,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-01-18 13:30:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.481167608286252) internal successors, (2635), 1062 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-01-18 13:30:17,582 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-01-18 13:30:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:17,582 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-01-18 13:30:17,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-01-18 13:30:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:17,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:17,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:17,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-01-18 13:30:17,584 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1493334750, now seen corresponding path program 239 times [2022-01-18 13:30:17,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:17,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511243828] [2022-01-18 13:30:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:17,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:17,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:17,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511243828] [2022-01-18 13:30:17,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511243828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:17,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:17,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:17,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351679977] [2022-01-18 13:30:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:17,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:17,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:17,880 INFO L87 Difference]: Start difference. First operand 1063 states and 2635 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:18,821 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-01-18 13:30:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:30:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:18,822 INFO L225 Difference]: With dead ends: 1263 [2022-01-18 13:30:18,822 INFO L226 Difference]: Without dead ends: 1083 [2022-01-18 13:30:18,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=205, Invalid=2245, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:30:18,823 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 311 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:18,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2715 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:18,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-01-18 13:30:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-01-18 13:30:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.478805394990366) internal successors, (2573), 1038 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-01-18 13:30:18,831 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-01-18 13:30:18,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:18,831 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-01-18 13:30:18,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-01-18 13:30:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:18,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:18,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:18,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-01-18 13:30:18,833 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:18,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash 492157370, now seen corresponding path program 240 times [2022-01-18 13:30:18,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:18,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183656433] [2022-01-18 13:30:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:18,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:19,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:19,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183656433] [2022-01-18 13:30:19,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183656433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:19,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:19,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:19,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50384671] [2022-01-18 13:30:19,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:19,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:19,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:19,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:19,093 INFO L87 Difference]: Start difference. First operand 1039 states and 2573 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:19,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:19,862 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-01-18 13:30:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 13:30:19,863 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:19,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:19,864 INFO L225 Difference]: With dead ends: 1286 [2022-01-18 13:30:19,864 INFO L226 Difference]: Without dead ends: 1067 [2022-01-18 13:30:19,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=1719, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:30:19,865 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 295 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:19,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2445 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-01-18 13:30:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-01-18 13:30:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.4777562862669247) internal successors, (2562), 1034 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:19,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-01-18 13:30:19,873 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-01-18 13:30:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:19,874 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-01-18 13:30:19,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:19,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-01-18 13:30:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:19,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:19,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:19,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-01-18 13:30:19,875 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1847743028, now seen corresponding path program 241 times [2022-01-18 13:30:19,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:19,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388375710] [2022-01-18 13:30:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:19,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:20,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:20,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388375710] [2022-01-18 13:30:20,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388375710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:20,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:20,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:20,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6542565] [2022-01-18 13:30:20,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:20,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:20,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:20,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:20,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:20,143 INFO L87 Difference]: Start difference. First operand 1035 states and 2562 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:20,943 INFO L93 Difference]: Finished difference Result 1312 states and 3213 transitions. [2022-01-18 13:30:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:30:20,943 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:20,944 INFO L225 Difference]: With dead ends: 1312 [2022-01-18 13:30:20,944 INFO L226 Difference]: Without dead ends: 1027 [2022-01-18 13:30:20,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:30:20,945 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 305 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:20,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2391 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-01-18 13:30:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1003. [2022-01-18 13:30:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 2.4810379241516967) internal successors, (2486), 1002 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 2486 transitions. [2022-01-18 13:30:20,953 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 2486 transitions. Word has length 79 [2022-01-18 13:30:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:20,953 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 2486 transitions. [2022-01-18 13:30:20,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2486 transitions. [2022-01-18 13:30:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:20,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:20,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:20,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-01-18 13:30:20,954 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash -566943232, now seen corresponding path program 242 times [2022-01-18 13:30:20,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:20,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533768864] [2022-01-18 13:30:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:20,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:21,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:21,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533768864] [2022-01-18 13:30:21,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533768864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:21,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:21,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:21,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757320604] [2022-01-18 13:30:21,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:21,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:21,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:21,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:21,207 INFO L87 Difference]: Start difference. First operand 1003 states and 2486 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:21,968 INFO L93 Difference]: Finished difference Result 1269 states and 3147 transitions. [2022-01-18 13:30:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:30:21,969 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:21,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:21,970 INFO L225 Difference]: With dead ends: 1269 [2022-01-18 13:30:21,970 INFO L226 Difference]: Without dead ends: 1139 [2022-01-18 13:30:21,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 13:30:21,970 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 261 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:21,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2230 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-18 13:30:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1083. [2022-01-18 13:30:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.4935304990757854) internal successors, (2698), 1082 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-01-18 13:30:21,979 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-01-18 13:30:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:21,979 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-01-18 13:30:21,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-01-18 13:30:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:21,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:21,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:21,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-01-18 13:30:21,980 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1420334398, now seen corresponding path program 243 times [2022-01-18 13:30:21,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:21,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973912685] [2022-01-18 13:30:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:21,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:22,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:22,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973912685] [2022-01-18 13:30:22,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973912685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:22,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:22,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:22,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311282239] [2022-01-18 13:30:22,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:22,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:22,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:22,235 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:22,995 INFO L93 Difference]: Finished difference Result 1264 states and 3127 transitions. [2022-01-18 13:30:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:30:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:22,996 INFO L225 Difference]: With dead ends: 1264 [2022-01-18 13:30:22,996 INFO L226 Difference]: Without dead ends: 1166 [2022-01-18 13:30:22,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:30:22,997 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 250 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:22,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 2173 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-18 13:30:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1087. [2022-01-18 13:30:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.490791896869245) internal successors, (2705), 1086 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-01-18 13:30:23,006 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-01-18 13:30:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:23,006 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-01-18 13:30:23,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-01-18 13:30:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:23,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:23,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:23,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-01-18 13:30:23,007 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash -706097120, now seen corresponding path program 244 times [2022-01-18 13:30:23,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:23,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641254607] [2022-01-18 13:30:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:23,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:23,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:23,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641254607] [2022-01-18 13:30:23,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641254607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:23,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:23,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:23,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106464416] [2022-01-18 13:30:23,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:23,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:23,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:23,259 INFO L87 Difference]: Start difference. First operand 1087 states and 2705 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:24,004 INFO L93 Difference]: Finished difference Result 1232 states and 3043 transitions. [2022-01-18 13:30:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:30:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:24,005 INFO L225 Difference]: With dead ends: 1232 [2022-01-18 13:30:24,006 INFO L226 Difference]: Without dead ends: 1119 [2022-01-18 13:30:24,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:30:24,006 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 279 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:24,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2226 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-01-18 13:30:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1075. [2022-01-18 13:30:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.4916201117318435) internal successors, (2676), 1074 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 13:30:24,015 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 13:30:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:24,015 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 13:30:24,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 13:30:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:24,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:24,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:24,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-01-18 13:30:24,016 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -147138528, now seen corresponding path program 245 times [2022-01-18 13:30:24,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:24,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364425815] [2022-01-18 13:30:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:24,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:24,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:24,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364425815] [2022-01-18 13:30:24,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364425815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:24,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:24,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:24,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980522684] [2022-01-18 13:30:24,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:24,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:24,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:24,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:24,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:24,280 INFO L87 Difference]: Start difference. First operand 1075 states and 2676 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:25,303 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-01-18 13:30:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 13:30:25,303 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:25,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:25,304 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 13:30:25,305 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 13:30:25,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1705, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:30:25,305 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 273 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:25,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2216 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:30:25,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 13:30:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1099. [2022-01-18 13:30:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:30:25,314 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:30:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:25,315 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:30:25,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:30:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:25,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:25,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:25,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-01-18 13:30:25,316 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:25,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1169394364, now seen corresponding path program 246 times [2022-01-18 13:30:25,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:25,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880080952] [2022-01-18 13:30:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:25,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:25,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880080952] [2022-01-18 13:30:25,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880080952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:25,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:25,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:25,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586418785] [2022-01-18 13:30:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:25,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:25,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:25,554 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:26,335 INFO L93 Difference]: Finished difference Result 1250 states and 3080 transitions. [2022-01-18 13:30:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:30:26,336 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:26,337 INFO L225 Difference]: With dead ends: 1250 [2022-01-18 13:30:26,337 INFO L226 Difference]: Without dead ends: 1099 [2022-01-18 13:30:26,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:30:26,338 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 271 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:26,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2440 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-01-18 13:30:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1059. [2022-01-18 13:30:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.4877126654064274) internal successors, (2632), 1058 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 13:30:26,347 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 13:30:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:26,347 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 13:30:26,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:26,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 13:30:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:26,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:26,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:26,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-01-18 13:30:26,348 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:26,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2023485472, now seen corresponding path program 247 times [2022-01-18 13:30:26,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:26,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110503858] [2022-01-18 13:30:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:26,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:26,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110503858] [2022-01-18 13:30:26,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110503858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:26,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:26,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:26,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804179672] [2022-01-18 13:30:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:26,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:26,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:26,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:26,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:26,614 INFO L87 Difference]: Start difference. First operand 1059 states and 2632 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:27,659 INFO L93 Difference]: Finished difference Result 1317 states and 3254 transitions. [2022-01-18 13:30:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:30:27,659 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:27,661 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 13:30:27,661 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 13:30:27,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:30:27,661 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 264 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:27,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2852 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:27,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 13:30:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1087. [2022-01-18 13:30:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 13:30:27,670 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 13:30:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:27,670 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 13:30:27,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:27,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 13:30:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:27,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:27,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:27,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-01-18 13:30:27,672 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:27,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:27,672 INFO L85 PathProgramCache]: Analyzing trace with hash -954948932, now seen corresponding path program 248 times [2022-01-18 13:30:27,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:27,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126499881] [2022-01-18 13:30:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:27,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:27,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126499881] [2022-01-18 13:30:27,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126499881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:27,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:27,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:27,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874607615] [2022-01-18 13:30:27,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:27,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:27,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:27,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:27,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:27,914 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:28,829 INFO L93 Difference]: Finished difference Result 1273 states and 3137 transitions. [2022-01-18 13:30:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:30:28,829 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:28,831 INFO L225 Difference]: With dead ends: 1273 [2022-01-18 13:30:28,831 INFO L226 Difference]: Without dead ends: 1138 [2022-01-18 13:30:28,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:30:28,831 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 284 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:28,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2451 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:30:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-01-18 13:30:28,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1063. [2022-01-18 13:30:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4849340866290017) internal successors, (2639), 1062 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-01-18 13:30:28,840 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-01-18 13:30:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:28,840 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-01-18 13:30:28,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-01-18 13:30:28,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:28,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:28,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:28,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-01-18 13:30:28,842 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2085463962, now seen corresponding path program 249 times [2022-01-18 13:30:28,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:28,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51557100] [2022-01-18 13:30:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:28,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:29,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:29,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51557100] [2022-01-18 13:30:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51557100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:29,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:29,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:29,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327795434] [2022-01-18 13:30:29,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:29,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:29,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:29,106 INFO L87 Difference]: Start difference. First operand 1063 states and 2639 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:29,881 INFO L93 Difference]: Finished difference Result 1261 states and 3104 transitions. [2022-01-18 13:30:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:30:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:29,882 INFO L225 Difference]: With dead ends: 1261 [2022-01-18 13:30:29,883 INFO L226 Difference]: Without dead ends: 1091 [2022-01-18 13:30:29,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:30:29,883 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 286 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:29,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2382 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-01-18 13:30:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-01-18 13:30:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4857142857142858) internal successors, (2610), 1050 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 13:30:29,892 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 13:30:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:29,892 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 13:30:29,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 13:30:29,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:29,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:29,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:29,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-01-18 13:30:29,897 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2088188610, now seen corresponding path program 250 times [2022-01-18 13:30:29,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:29,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564577681] [2022-01-18 13:30:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:29,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:30,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:30,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564577681] [2022-01-18 13:30:30,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564577681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:30,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:30,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:30,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163557071] [2022-01-18 13:30:30,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:30,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:30,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:30,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:30,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:30,162 INFO L87 Difference]: Start difference. First operand 1051 states and 2610 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:32,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:30:33,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:33,244 INFO L93 Difference]: Finished difference Result 1315 states and 3240 transitions. [2022-01-18 13:30:33,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:30:33,244 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:33,246 INFO L225 Difference]: With dead ends: 1315 [2022-01-18 13:30:33,246 INFO L226 Difference]: Without dead ends: 1217 [2022-01-18 13:30:33,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:30:33,246 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 275 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:33,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2650 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 996 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:30:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-01-18 13:30:33,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1099. [2022-01-18 13:30:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4899817850637525) internal successors, (2734), 1098 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 13:30:33,255 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 13:30:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:33,255 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 13:30:33,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 13:30:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:33,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:33,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:33,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-01-18 13:30:33,257 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash -890245794, now seen corresponding path program 251 times [2022-01-18 13:30:33,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:33,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283784399] [2022-01-18 13:30:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:33,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:33,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:33,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283784399] [2022-01-18 13:30:33,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283784399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:33,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:33,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:33,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967126520] [2022-01-18 13:30:33,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:33,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:33,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:33,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:33,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:33,507 INFO L87 Difference]: Start difference. First operand 1099 states and 2734 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:36,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:30:36,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:36,490 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-01-18 13:30:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:30:36,491 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:36,492 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 13:30:36,492 INFO L226 Difference]: Without dead ends: 1148 [2022-01-18 13:30:36,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1975, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:30:36,493 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 243 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:36,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 2741 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1012 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:30:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-01-18 13:30:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1075. [2022-01-18 13:30:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 13:30:36,503 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 13:30:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:36,503 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 13:30:36,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:36,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 13:30:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:36,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:36,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:36,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-01-18 13:30:36,504 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:36,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:36,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2036715938, now seen corresponding path program 252 times [2022-01-18 13:30:36,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:36,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199192452] [2022-01-18 13:30:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:36,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:36,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:36,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199192452] [2022-01-18 13:30:36,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199192452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:36,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:36,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:36,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216909153] [2022-01-18 13:30:36,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:36,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:36,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:36,769 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:37,528 INFO L93 Difference]: Finished difference Result 1259 states and 3086 transitions. [2022-01-18 13:30:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:30:37,528 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:37,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:37,530 INFO L225 Difference]: With dead ends: 1259 [2022-01-18 13:30:37,530 INFO L226 Difference]: Without dead ends: 1063 [2022-01-18 13:30:37,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:30:37,530 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 256 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:37,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 2254 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:37,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-01-18 13:30:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1035. [2022-01-18 13:30:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.481624758220503) internal successors, (2566), 1034 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-01-18 13:30:37,539 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-01-18 13:30:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:37,539 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-01-18 13:30:37,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-01-18 13:30:37,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:37,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:37,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:37,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-01-18 13:30:37,540 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:37,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:37,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2112785090, now seen corresponding path program 253 times [2022-01-18 13:30:37,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:37,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922284897] [2022-01-18 13:30:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:37,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:37,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:37,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:37,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922284897] [2022-01-18 13:30:37,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922284897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:37,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:37,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:37,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461689576] [2022-01-18 13:30:37,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:37,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:37,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:37,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:37,820 INFO L87 Difference]: Start difference. First operand 1035 states and 2566 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:39,291 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-01-18 13:30:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:30:39,292 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:39,293 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 13:30:39,293 INFO L226 Difference]: Without dead ends: 1249 [2022-01-18 13:30:39,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2831, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:30:39,294 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 290 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:39,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2918 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:30:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-01-18 13:30:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1087. [2022-01-18 13:30:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 13:30:39,304 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 13:30:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:39,304 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 13:30:39,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 13:30:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:39,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:39,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:39,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-01-18 13:30:39,306 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash -865649314, now seen corresponding path program 254 times [2022-01-18 13:30:39,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:39,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738045568] [2022-01-18 13:30:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:39,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:39,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:39,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738045568] [2022-01-18 13:30:39,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738045568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:39,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:39,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:39,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070743522] [2022-01-18 13:30:39,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:39,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:39,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:39,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:39,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:39,576 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:42,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:30:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:42,739 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-01-18 13:30:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:30:42,740 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:42,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:42,741 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 13:30:42,741 INFO L226 Difference]: Without dead ends: 1168 [2022-01-18 13:30:42,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:30:42,741 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 324 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:42,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 2776 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1028 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:30:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-01-18 13:30:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-01-18 13:30:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.481167608286252) internal successors, (2635), 1062 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-01-18 13:30:42,751 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-01-18 13:30:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:42,751 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-01-18 13:30:42,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:42,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-01-18 13:30:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:42,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:42,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:42,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-01-18 13:30:42,752 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2061312418, now seen corresponding path program 255 times [2022-01-18 13:30:42,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:42,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579617549] [2022-01-18 13:30:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:42,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:43,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:43,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579617549] [2022-01-18 13:30:43,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579617549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:43,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:43,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:43,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680528111] [2022-01-18 13:30:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:43,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:43,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:43,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:43,007 INFO L87 Difference]: Start difference. First operand 1063 states and 2635 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:43,912 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-01-18 13:30:43,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:30:43,912 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:43,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:43,913 INFO L225 Difference]: With dead ends: 1267 [2022-01-18 13:30:43,914 INFO L226 Difference]: Without dead ends: 1087 [2022-01-18 13:30:43,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:30:43,914 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 281 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:43,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2566 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-01-18 13:30:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-01-18 13:30:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.478805394990366) internal successors, (2573), 1038 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-01-18 13:30:43,923 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-01-18 13:30:43,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:43,923 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-01-18 13:30:43,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-01-18 13:30:43,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:43,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:43,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:43,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-01-18 13:30:43,924 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:43,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:43,924 INFO L85 PathProgramCache]: Analyzing trace with hash -248162758, now seen corresponding path program 256 times [2022-01-18 13:30:43,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:43,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329825086] [2022-01-18 13:30:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:43,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:44,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:44,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329825086] [2022-01-18 13:30:44,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329825086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:44,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:44,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:44,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073240363] [2022-01-18 13:30:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:44,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:44,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:44,228 INFO L87 Difference]: Start difference. First operand 1039 states and 2573 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:44,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:44,988 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-01-18 13:30:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:30:44,991 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:44,992 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 13:30:44,992 INFO L226 Difference]: Without dead ends: 1055 [2022-01-18 13:30:44,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:30:44,993 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 281 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:44,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2495 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-01-18 13:30:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1027. [2022-01-18 13:30:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.47953216374269) internal successors, (2544), 1026 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-01-18 13:30:45,002 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-01-18 13:30:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:45,002 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-01-18 13:30:45,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-01-18 13:30:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:45,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:45,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:45,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-01-18 13:30:45,003 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:45,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash 216748064, now seen corresponding path program 257 times [2022-01-18 13:30:45,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:45,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523741528] [2022-01-18 13:30:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:45,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:45,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:45,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523741528] [2022-01-18 13:30:45,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523741528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:45,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:45,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:45,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791984962] [2022-01-18 13:30:45,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:45,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:45,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:45,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:45,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:45,302 INFO L87 Difference]: Start difference. First operand 1027 states and 2544 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:47,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:30:49,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:30:49,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:49,450 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-01-18 13:30:49,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:30:49,450 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:49,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:49,452 INFO L225 Difference]: With dead ends: 1343 [2022-01-18 13:30:49,452 INFO L226 Difference]: Without dead ends: 1245 [2022-01-18 13:30:49,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=2937, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:30:49,452 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 311 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:49,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2917 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-18 13:30:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-18 13:30:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1087. [2022-01-18 13:30:49,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.487108655616943) internal successors, (2701), 1086 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:49,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 13:30:49,462 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 13:30:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:49,462 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 13:30:49,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 13:30:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:49,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:49,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:49,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-01-18 13:30:49,463 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1533280956, now seen corresponding path program 258 times [2022-01-18 13:30:49,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:49,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27470858] [2022-01-18 13:30:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:49,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:49,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:49,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27470858] [2022-01-18 13:30:49,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27470858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:49,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:49,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:49,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625289123] [2022-01-18 13:30:49,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:49,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:49,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:49,741 INFO L87 Difference]: Start difference. First operand 1087 states and 2701 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:52,302 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-01-18 13:30:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:30:52,302 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:52,304 INFO L225 Difference]: With dead ends: 1299 [2022-01-18 13:30:52,304 INFO L226 Difference]: Without dead ends: 1164 [2022-01-18 13:30:52,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=2833, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:30:52,304 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 297 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:52,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2891 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 13:30:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-18 13:30:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-01-18 13:30:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.481167608286252) internal successors, (2635), 1062 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-01-18 13:30:52,313 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-01-18 13:30:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:52,313 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-01-18 13:30:52,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-01-18 13:30:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:52,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:52,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:52,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-01-18 13:30:52,314 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:52,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 165275392, now seen corresponding path program 259 times [2022-01-18 13:30:52,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:52,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585301212] [2022-01-18 13:30:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:52,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:52,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:52,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585301212] [2022-01-18 13:30:52,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585301212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:52,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:52,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:30:52,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790940824] [2022-01-18 13:30:52,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:52,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:30:52,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:30:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:30:52,566 INFO L87 Difference]: Start difference. First operand 1063 states and 2635 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:53,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:53,458 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-01-18 13:30:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:30:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:53,460 INFO L225 Difference]: With dead ends: 1263 [2022-01-18 13:30:53,460 INFO L226 Difference]: Without dead ends: 1083 [2022-01-18 13:30:53,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=2152, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:30:53,460 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 300 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:53,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2550 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-01-18 13:30:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-01-18 13:30:53,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.478805394990366) internal successors, (2573), 1038 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:53,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-01-18 13:30:53,469 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-01-18 13:30:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:53,469 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-01-18 13:30:53,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:53,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-01-18 13:30:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:53,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:53,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:53,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-01-18 13:30:53,470 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:53,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2144199784, now seen corresponding path program 260 times [2022-01-18 13:30:53,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:53,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690760657] [2022-01-18 13:30:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:53,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:53,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:53,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690760657] [2022-01-18 13:30:53,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690760657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:53,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:53,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:53,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308102210] [2022-01-18 13:30:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:53,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:53,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:53,731 INFO L87 Difference]: Start difference. First operand 1039 states and 2573 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:54,523 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-01-18 13:30:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:30:54,523 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:54,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:54,530 INFO L225 Difference]: With dead ends: 1286 [2022-01-18 13:30:54,530 INFO L226 Difference]: Without dead ends: 1067 [2022-01-18 13:30:54,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:30:54,530 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 271 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:54,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2558 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-01-18 13:30:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-01-18 13:30:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.4777562862669247) internal successors, (2562), 1034 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-01-18 13:30:54,541 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-01-18 13:30:54,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:54,541 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-01-18 13:30:54,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-01-18 13:30:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:54,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:54,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:54,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-01-18 13:30:54,542 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash -189132886, now seen corresponding path program 261 times [2022-01-18 13:30:54,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:54,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009132184] [2022-01-18 13:30:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:54,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:54,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:54,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009132184] [2022-01-18 13:30:54,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009132184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:54,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:54,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:30:54,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975690605] [2022-01-18 13:30:54,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:54,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:30:54,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:30:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:30:54,801 INFO L87 Difference]: Start difference. First operand 1035 states and 2562 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:55,563 INFO L93 Difference]: Finished difference Result 1304 states and 3191 transitions. [2022-01-18 13:30:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 13:30:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:55,564 INFO L225 Difference]: With dead ends: 1304 [2022-01-18 13:30:55,564 INFO L226 Difference]: Without dead ends: 1027 [2022-01-18 13:30:55,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 13:30:55,565 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 302 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:55,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2487 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:30:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-01-18 13:30:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1011. [2022-01-18 13:30:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 2.4752475247524752) internal successors, (2500), 1010 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 2500 transitions. [2022-01-18 13:30:55,573 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 2500 transitions. Word has length 79 [2022-01-18 13:30:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:55,573 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 2500 transitions. [2022-01-18 13:30:55,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 2500 transitions. [2022-01-18 13:30:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:55,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:55,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:55,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-01-18 13:30:55,574 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2043254816, now seen corresponding path program 262 times [2022-01-18 13:30:55,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:55,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496356975] [2022-01-18 13:30:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:55,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:55,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:55,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496356975] [2022-01-18 13:30:55,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496356975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:55,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:55,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:30:55,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205298345] [2022-01-18 13:30:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:55,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:30:55,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:55,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:30:55,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:30:55,865 INFO L87 Difference]: Start difference. First operand 1011 states and 2500 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:57,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:57,263 INFO L93 Difference]: Finished difference Result 1319 states and 3247 transitions. [2022-01-18 13:30:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:30:57,263 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:57,265 INFO L225 Difference]: With dead ends: 1319 [2022-01-18 13:30:57,265 INFO L226 Difference]: Without dead ends: 1221 [2022-01-18 13:30:57,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=3050, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:30:57,265 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 299 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:57,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 3038 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:30:57,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-01-18 13:30:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1075. [2022-01-18 13:30:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.484171322160149) internal successors, (2668), 1074 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 13:30:57,274 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 13:30:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:57,274 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 13:30:57,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 13:30:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:57,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:57,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:57,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-01-18 13:30:57,276 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:57,276 INFO L85 PathProgramCache]: Analyzing trace with hash -935179588, now seen corresponding path program 263 times [2022-01-18 13:30:57,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:57,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805079595] [2022-01-18 13:30:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:57,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:57,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:57,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805079595] [2022-01-18 13:30:57,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805079595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:57,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:57,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:30:57,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058811859] [2022-01-18 13:30:57,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:57,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:30:57,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:30:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:30:57,555 INFO L87 Difference]: Start difference. First operand 1075 states and 2668 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:30:59,104 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-01-18 13:30:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:30:59,105 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:30:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:30:59,106 INFO L225 Difference]: With dead ends: 1275 [2022-01-18 13:30:59,106 INFO L226 Difference]: Without dead ends: 1140 [2022-01-18 13:30:59,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2944, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:30:59,107 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 317 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:30:59,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2899 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:30:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-01-18 13:30:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1051. [2022-01-18 13:30:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.478095238095238) internal successors, (2602), 1050 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2602 transitions. [2022-01-18 13:30:59,115 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2602 transitions. Word has length 79 [2022-01-18 13:30:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:30:59,115 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2602 transitions. [2022-01-18 13:30:59,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:30:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2602 transitions. [2022-01-18 13:30:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:30:59,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:30:59,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:30:59,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-01-18 13:30:59,117 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:30:59,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:30:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1991782144, now seen corresponding path program 264 times [2022-01-18 13:30:59,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:30:59,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692396562] [2022-01-18 13:30:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:30:59,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:30:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:30:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:30:59,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:30:59,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692396562] [2022-01-18 13:30:59,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692396562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:30:59,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:30:59,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:30:59,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891231262] [2022-01-18 13:30:59,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:30:59,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:30:59,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:30:59,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:30:59,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:30:59,386 INFO L87 Difference]: Start difference. First operand 1051 states and 2602 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:00,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:00,353 INFO L93 Difference]: Finished difference Result 1239 states and 3031 transitions. [2022-01-18 13:31:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:31:00,353 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:00,354 INFO L225 Difference]: With dead ends: 1239 [2022-01-18 13:31:00,354 INFO L226 Difference]: Without dead ends: 1059 [2022-01-18 13:31:00,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=2249, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:31:00,355 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 276 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:00,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2807 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:31:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-01-18 13:31:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1027. [2022-01-18 13:31:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.4756335282651074) internal successors, (2540), 1026 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2540 transitions. [2022-01-18 13:31:00,363 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2540 transitions. Word has length 79 [2022-01-18 13:31:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:00,363 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2540 transitions. [2022-01-18 13:31:00,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2540 transitions. [2022-01-18 13:31:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:00,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:00,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:00,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-01-18 13:31:00,364 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash -317693032, now seen corresponding path program 265 times [2022-01-18 13:31:00,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:00,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122487067] [2022-01-18 13:31:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:00,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:00,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:00,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122487067] [2022-01-18 13:31:00,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122487067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:00,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:00,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:31:00,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172353007] [2022-01-18 13:31:00,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:00,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:31:00,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:31:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:31:00,634 INFO L87 Difference]: Start difference. First operand 1027 states and 2540 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:01,435 INFO L93 Difference]: Finished difference Result 1262 states and 3088 transitions. [2022-01-18 13:31:01,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 13:31:01,436 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:01,437 INFO L225 Difference]: With dead ends: 1262 [2022-01-18 13:31:01,437 INFO L226 Difference]: Without dead ends: 1043 [2022-01-18 13:31:01,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 13:31:01,437 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 299 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:01,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2555 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:31:01,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-01-18 13:31:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1023. [2022-01-18 13:31:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 2.474559686888454) internal successors, (2529), 1022 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2529 transitions. [2022-01-18 13:31:01,446 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2529 transitions. Word has length 79 [2022-01-18 13:31:01,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:01,446 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2529 transitions. [2022-01-18 13:31:01,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:01,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2529 transitions. [2022-01-18 13:31:01,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:01,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:01,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:01,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-01-18 13:31:01,447 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1637373866, now seen corresponding path program 266 times [2022-01-18 13:31:01,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:01,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223663001] [2022-01-18 13:31:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:01,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:01,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:01,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223663001] [2022-01-18 13:31:01,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223663001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:01,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:01,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:31:01,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217894479] [2022-01-18 13:31:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:01,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:31:01,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:31:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:31:01,725 INFO L87 Difference]: Start difference. First operand 1023 states and 2529 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:02,573 INFO L93 Difference]: Finished difference Result 1292 states and 3158 transitions. [2022-01-18 13:31:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:31:02,573 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:02,575 INFO L225 Difference]: With dead ends: 1292 [2022-01-18 13:31:02,575 INFO L226 Difference]: Without dead ends: 1031 [2022-01-18 13:31:02,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 13:31:02,575 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 313 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:02,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2469 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:31:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-01-18 13:31:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1015. [2022-01-18 13:31:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 2.472386587771203) internal successors, (2507), 1014 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2507 transitions. [2022-01-18 13:31:02,584 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2507 transitions. Word has length 79 [2022-01-18 13:31:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:02,584 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2507 transitions. [2022-01-18 13:31:02,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2507 transitions. [2022-01-18 13:31:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:02,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:02,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:02,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-01-18 13:31:02,585 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:02,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash -264299060, now seen corresponding path program 267 times [2022-01-18 13:31:02,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:02,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272509950] [2022-01-18 13:31:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:02,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:02,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:02,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272509950] [2022-01-18 13:31:02,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272509950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:02,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:02,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:31:02,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646008749] [2022-01-18 13:31:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:02,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:31:02,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:02,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:31:02,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:31:02,857 INFO L87 Difference]: Start difference. First operand 1015 states and 2507 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:03,625 INFO L93 Difference]: Finished difference Result 1287 states and 3138 transitions. [2022-01-18 13:31:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 13:31:03,625 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:03,626 INFO L225 Difference]: With dead ends: 1287 [2022-01-18 13:31:03,626 INFO L226 Difference]: Without dead ends: 971 [2022-01-18 13:31:03,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=1566, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 13:31:03,626 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 284 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:03,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2741 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:31:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-18 13:31:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-18 13:31:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 2.4938144329896907) internal successors, (2419), 970 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 2419 transitions. [2022-01-18 13:31:03,634 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 2419 transitions. Word has length 79 [2022-01-18 13:31:03,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:03,634 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 2419 transitions. [2022-01-18 13:31:03,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 2419 transitions. [2022-01-18 13:31:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:03,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:03,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:03,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-01-18 13:31:03,636 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:03,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:03,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1441860872, now seen corresponding path program 268 times [2022-01-18 13:31:03,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:03,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153524643] [2022-01-18 13:31:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:03,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:03,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:03,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153524643] [2022-01-18 13:31:03,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153524643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:03,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:03,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:03,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006147735] [2022-01-18 13:31:03,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:03,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:03,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:03,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:03,907 INFO L87 Difference]: Start difference. First operand 971 states and 2419 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:05,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:05,210 INFO L93 Difference]: Finished difference Result 1381 states and 3476 transitions. [2022-01-18 13:31:05,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 13:31:05,210 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:05,212 INFO L225 Difference]: With dead ends: 1381 [2022-01-18 13:31:05,212 INFO L226 Difference]: Without dead ends: 1251 [2022-01-18 13:31:05,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=297, Invalid=3363, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:31:05,212 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 321 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:05,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2852 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-01-18 13:31:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1087. [2022-01-18 13:31:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.5138121546961325) internal successors, (2730), 1086 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2730 transitions. [2022-01-18 13:31:05,222 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2730 transitions. Word has length 79 [2022-01-18 13:31:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:05,222 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2730 transitions. [2022-01-18 13:31:05,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:05,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2730 transitions. [2022-01-18 13:31:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:05,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:05,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:05,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-01-18 13:31:05,223 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:05,223 INFO L85 PathProgramCache]: Analyzing trace with hash 588469706, now seen corresponding path program 269 times [2022-01-18 13:31:05,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:05,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129939036] [2022-01-18 13:31:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:05,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:05,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:05,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129939036] [2022-01-18 13:31:05,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129939036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:05,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:05,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:05,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424012511] [2022-01-18 13:31:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:05,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:05,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:05,515 INFO L87 Difference]: Start difference. First operand 1087 states and 2730 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:08,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:08,238 INFO L93 Difference]: Finished difference Result 1392 states and 3496 transitions. [2022-01-18 13:31:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 13:31:08,239 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:08,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:08,240 INFO L225 Difference]: With dead ends: 1392 [2022-01-18 13:31:08,240 INFO L226 Difference]: Without dead ends: 1294 [2022-01-18 13:31:08,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=327, Invalid=3963, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 13:31:08,241 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 380 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:08,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 2897 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 13:31:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-01-18 13:31:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1091. [2022-01-18 13:31:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.5110091743119267) internal successors, (2737), 1090 states have internal predecessors, (2737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2737 transitions. [2022-01-18 13:31:08,251 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2737 transitions. Word has length 79 [2022-01-18 13:31:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:08,251 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2737 transitions. [2022-01-18 13:31:08,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2737 transitions. [2022-01-18 13:31:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:08,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:08,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:08,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-01-18 13:31:08,252 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1302706984, now seen corresponding path program 270 times [2022-01-18 13:31:08,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:08,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108863628] [2022-01-18 13:31:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:08,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:08,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:08,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108863628] [2022-01-18 13:31:08,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108863628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:08,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:08,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:08,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199331440] [2022-01-18 13:31:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:08,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:08,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:08,536 INFO L87 Difference]: Start difference. First operand 1091 states and 2737 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:10,716 INFO L93 Difference]: Finished difference Result 1375 states and 3447 transitions. [2022-01-18 13:31:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 13:31:10,717 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:10,718 INFO L225 Difference]: With dead ends: 1375 [2022-01-18 13:31:10,718 INFO L226 Difference]: Without dead ends: 1262 [2022-01-18 13:31:10,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=320, Invalid=3840, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 13:31:10,719 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 389 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:10,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 2913 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 13:31:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-01-18 13:31:10,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1079. [2022-01-18 13:31:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.50834879406308) internal successors, (2704), 1078 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2704 transitions. [2022-01-18 13:31:10,729 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2704 transitions. Word has length 79 [2022-01-18 13:31:10,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:10,729 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2704 transitions. [2022-01-18 13:31:10,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2704 transitions. [2022-01-18 13:31:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:10,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:10,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:10,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-01-18 13:31:10,730 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:10,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:10,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1628155210, now seen corresponding path program 271 times [2022-01-18 13:31:10,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:10,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776684858] [2022-01-18 13:31:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:10,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:11,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:11,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776684858] [2022-01-18 13:31:11,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776684858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:11,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:11,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:11,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322276008] [2022-01-18 13:31:11,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:11,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:11,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:11,017 INFO L87 Difference]: Start difference. First operand 1079 states and 2704 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:12,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:12,617 INFO L93 Difference]: Finished difference Result 1353 states and 3387 transitions. [2022-01-18 13:31:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:31:12,617 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:12,619 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:31:12,619 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 13:31:12,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=271, Invalid=3035, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:31:12,619 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 357 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:12,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 2635 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:31:12,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 13:31:12,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1075. [2022-01-18 13:31:12,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.507448789571695) internal successors, (2693), 1074 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2693 transitions. [2022-01-18 13:31:12,628 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2693 transitions. Word has length 79 [2022-01-18 13:31:12,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:12,629 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2693 transitions. [2022-01-18 13:31:12,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2693 transitions. [2022-01-18 13:31:12,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:12,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:12,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:12,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-01-18 13:31:12,630 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:12,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1805229752, now seen corresponding path program 272 times [2022-01-18 13:31:12,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:12,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112148480] [2022-01-18 13:31:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:12,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:12,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:12,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112148480] [2022-01-18 13:31:12,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112148480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:12,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:12,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:12,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154993586] [2022-01-18 13:31:12,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:12,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:12,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:12,905 INFO L87 Difference]: Start difference. First operand 1075 states and 2693 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:14,400 INFO L93 Difference]: Finished difference Result 1366 states and 3416 transitions. [2022-01-18 13:31:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:31:14,400 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:14,402 INFO L225 Difference]: With dead ends: 1366 [2022-01-18 13:31:14,402 INFO L226 Difference]: Without dead ends: 1268 [2022-01-18 13:31:14,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 13:31:14,402 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 319 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:14,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2918 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:31:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-01-18 13:31:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1099. [2022-01-18 13:31:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.5054644808743167) internal successors, (2751), 1098 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2751 transitions. [2022-01-18 13:31:14,412 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2751 transitions. Word has length 79 [2022-01-18 13:31:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:14,412 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2751 transitions. [2022-01-18 13:31:14,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2751 transitions. [2022-01-18 13:31:14,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:14,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:14,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:14,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-01-18 13:31:14,413 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash -488696860, now seen corresponding path program 273 times [2022-01-18 13:31:14,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:14,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168205106] [2022-01-18 13:31:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:14,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:14,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:14,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168205106] [2022-01-18 13:31:14,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168205106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:14,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:14,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:14,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337660425] [2022-01-18 13:31:14,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:14,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:14,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:14,671 INFO L87 Difference]: Start difference. First operand 1099 states and 2751 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:15,861 INFO L93 Difference]: Finished difference Result 1349 states and 3363 transitions. [2022-01-18 13:31:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:31:15,861 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:15,862 INFO L225 Difference]: With dead ends: 1349 [2022-01-18 13:31:15,862 INFO L226 Difference]: Without dead ends: 1190 [2022-01-18 13:31:15,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:31:15,863 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 307 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:15,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 3009 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-01-18 13:31:15,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1051. [2022-01-18 13:31:15,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.505714285714286) internal successors, (2631), 1050 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2631 transitions. [2022-01-18 13:31:15,872 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2631 transitions. Word has length 79 [2022-01-18 13:31:15,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:15,873 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2631 transitions. [2022-01-18 13:31:15,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2631 transitions. [2022-01-18 13:31:15,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:15,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:15,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:15,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-01-18 13:31:15,874 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:15,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2095320746, now seen corresponding path program 274 times [2022-01-18 13:31:15,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:15,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224241972] [2022-01-18 13:31:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:15,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:16,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:16,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224241972] [2022-01-18 13:31:16,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224241972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:16,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:16,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:16,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535343918] [2022-01-18 13:31:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:16,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:16,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:16,152 INFO L87 Difference]: Start difference. First operand 1051 states and 2631 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:18,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:18,342 INFO L93 Difference]: Finished difference Result 1345 states and 3369 transitions. [2022-01-18 13:31:18,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:31:18,342 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:18,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:18,344 INFO L225 Difference]: With dead ends: 1345 [2022-01-18 13:31:18,344 INFO L226 Difference]: Without dead ends: 1215 [2022-01-18 13:31:18,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=286, Invalid=3254, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 13:31:18,345 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 367 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:18,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 2561 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:31:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-01-18 13:31:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1071. [2022-01-18 13:31:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.502803738317757) internal successors, (2678), 1070 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2678 transitions. [2022-01-18 13:31:18,354 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2678 transitions. Word has length 79 [2022-01-18 13:31:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:18,354 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2678 transitions. [2022-01-18 13:31:18,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2678 transitions. [2022-01-18 13:31:18,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:18,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:18,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:18,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-01-18 13:31:18,355 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1241929580, now seen corresponding path program 275 times [2022-01-18 13:31:18,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:18,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652745557] [2022-01-18 13:31:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:18,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:18,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:18,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652745557] [2022-01-18 13:31:18,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652745557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:18,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:18,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:18,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136496701] [2022-01-18 13:31:18,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:18,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:18,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:18,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:18,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:18,644 INFO L87 Difference]: Start difference. First operand 1071 states and 2678 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:20,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:20,008 INFO L93 Difference]: Finished difference Result 1336 states and 3338 transitions. [2022-01-18 13:31:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 13:31:20,008 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:20,010 INFO L225 Difference]: With dead ends: 1336 [2022-01-18 13:31:20,010 INFO L226 Difference]: Without dead ends: 1238 [2022-01-18 13:31:20,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=311, Invalid=3721, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 13:31:20,011 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 341 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:20,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3159 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-01-18 13:31:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1075. [2022-01-18 13:31:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.5) internal successors, (2685), 1074 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2685 transitions. [2022-01-18 13:31:20,022 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2685 transitions. Word has length 79 [2022-01-18 13:31:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:20,023 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2685 transitions. [2022-01-18 13:31:20,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2685 transitions. [2022-01-18 13:31:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:20,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:20,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:20,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-01-18 13:31:20,025 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1956166858, now seen corresponding path program 276 times [2022-01-18 13:31:20,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:20,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190312211] [2022-01-18 13:31:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:20,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:20,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:20,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190312211] [2022-01-18 13:31:20,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190312211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:20,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:20,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:20,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606962973] [2022-01-18 13:31:20,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:20,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:20,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:20,325 INFO L87 Difference]: Start difference. First operand 1075 states and 2685 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:21,689 INFO L93 Difference]: Finished difference Result 1319 states and 3289 transitions. [2022-01-18 13:31:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:31:21,689 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:21,690 INFO L225 Difference]: With dead ends: 1319 [2022-01-18 13:31:21,691 INFO L226 Difference]: Without dead ends: 1206 [2022-01-18 13:31:21,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=3601, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:31:21,691 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 352 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:21,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2951 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-01-18 13:31:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1063. [2022-01-18 13:31:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.504708097928437) internal successors, (2660), 1062 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2660 transitions. [2022-01-18 13:31:21,700 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2660 transitions. Word has length 79 [2022-01-18 13:31:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:21,700 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2660 transitions. [2022-01-18 13:31:21,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2660 transitions. [2022-01-18 13:31:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:21,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:21,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:21,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-01-18 13:31:21,702 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2013352212, now seen corresponding path program 277 times [2022-01-18 13:31:21,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:21,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452357072] [2022-01-18 13:31:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:21,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:22,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:22,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452357072] [2022-01-18 13:31:22,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452357072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:22,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:22,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:22,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384258957] [2022-01-18 13:31:22,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:22,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:22,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:22,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:22,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:22,023 INFO L87 Difference]: Start difference. First operand 1063 states and 2660 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:23,883 INFO L93 Difference]: Finished difference Result 1325 states and 3310 transitions. [2022-01-18 13:31:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:31:23,883 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:23,885 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 13:31:23,885 INFO L226 Difference]: Without dead ends: 1175 [2022-01-18 13:31:23,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:31:23,885 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 326 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:23,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2696 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 13:31:23,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-01-18 13:31:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1059. [2022-01-18 13:31:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.503780718336484) internal successors, (2649), 1058 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2649 transitions. [2022-01-18 13:31:23,895 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2649 transitions. Word has length 79 [2022-01-18 13:31:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:23,895 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2649 transitions. [2022-01-18 13:31:23,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2649 transitions. [2022-01-18 13:31:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:23,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:23,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:23,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-01-18 13:31:23,896 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1575034120, now seen corresponding path program 278 times [2022-01-18 13:31:23,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:23,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590340664] [2022-01-18 13:31:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:23,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:24,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:24,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590340664] [2022-01-18 13:31:24,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590340664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:24,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:24,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:24,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707602242] [2022-01-18 13:31:24,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:24,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:24,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:24,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:24,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:24,166 INFO L87 Difference]: Start difference. First operand 1059 states and 2649 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:25,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:25,663 INFO L93 Difference]: Finished difference Result 1357 states and 3386 transitions. [2022-01-18 13:31:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:31:25,664 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:25,665 INFO L225 Difference]: With dead ends: 1357 [2022-01-18 13:31:25,665 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 13:31:25,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:31:25,666 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 313 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:25,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2895 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:31:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 13:31:25,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1035. [2022-01-18 13:31:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.501934235976789) internal successors, (2587), 1034 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2587 transitions. [2022-01-18 13:31:25,675 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2587 transitions. Word has length 79 [2022-01-18 13:31:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:25,675 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2587 transitions. [2022-01-18 13:31:25,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2587 transitions. [2022-01-18 13:31:25,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:25,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:25,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:25,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-01-18 13:31:25,676 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -982497334, now seen corresponding path program 279 times [2022-01-18 13:31:25,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:25,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55724152] [2022-01-18 13:31:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:25,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:25,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55724152] [2022-01-18 13:31:25,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55724152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:25,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:25,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:25,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758282221] [2022-01-18 13:31:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:25,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:25,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:25,973 INFO L87 Difference]: Start difference. First operand 1035 states and 2587 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:27,803 INFO L93 Difference]: Finished difference Result 1377 states and 3457 transitions. [2022-01-18 13:31:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 13:31:27,803 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:27,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:27,804 INFO L225 Difference]: With dead ends: 1377 [2022-01-18 13:31:27,805 INFO L226 Difference]: Without dead ends: 1247 [2022-01-18 13:31:27,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=333, Invalid=4089, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 13:31:27,805 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 407 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:27,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 2984 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:31:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-01-18 13:31:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1075. [2022-01-18 13:31:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.503724394785847) internal successors, (2689), 1074 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2689 transitions. [2022-01-18 13:31:27,815 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2689 transitions. Word has length 79 [2022-01-18 13:31:27,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:27,815 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2689 transitions. [2022-01-18 13:31:27,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2689 transitions. [2022-01-18 13:31:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:27,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:27,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:27,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-01-18 13:31:27,816 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:27,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1835888500, now seen corresponding path program 280 times [2022-01-18 13:31:27,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:27,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828822372] [2022-01-18 13:31:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:27,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:28,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828822372] [2022-01-18 13:31:28,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828822372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:28,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:28,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:28,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13106787] [2022-01-18 13:31:28,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:28,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:28,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:28,099 INFO L87 Difference]: Start difference. First operand 1075 states and 2689 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:29,541 INFO L93 Difference]: Finished difference Result 1368 states and 3426 transitions. [2022-01-18 13:31:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 13:31:29,541 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:29,543 INFO L225 Difference]: With dead ends: 1368 [2022-01-18 13:31:29,543 INFO L226 Difference]: Without dead ends: 1270 [2022-01-18 13:31:29,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:31:29,543 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 329 mSDsluCounter, 3139 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:29,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 3211 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:31:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-01-18 13:31:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1079. [2022-01-18 13:31:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.5009276437847867) internal successors, (2696), 1078 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2696 transitions. [2022-01-18 13:31:29,552 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2696 transitions. Word has length 79 [2022-01-18 13:31:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:29,552 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2696 transitions. [2022-01-18 13:31:29,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2696 transitions. [2022-01-18 13:31:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:29,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:29,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:29,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-01-18 13:31:29,554 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:29,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:29,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1121651222, now seen corresponding path program 281 times [2022-01-18 13:31:29,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:29,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821385029] [2022-01-18 13:31:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:29,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:29,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:29,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821385029] [2022-01-18 13:31:29,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821385029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:29,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:29,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:29,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195226981] [2022-01-18 13:31:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:29,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:29,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:29,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:29,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:29,842 INFO L87 Difference]: Start difference. First operand 1079 states and 2696 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:32,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:31:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:33,375 INFO L93 Difference]: Finished difference Result 1351 states and 3377 transitions. [2022-01-18 13:31:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 13:31:33,375 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:33,377 INFO L225 Difference]: With dead ends: 1351 [2022-01-18 13:31:33,377 INFO L226 Difference]: Without dead ends: 1238 [2022-01-18 13:31:33,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:31:33,377 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 384 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:33,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 2889 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1159 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 13:31:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-01-18 13:31:33,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1067. [2022-01-18 13:31:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4981238273921202) internal successors, (2663), 1066 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2663 transitions. [2022-01-18 13:31:33,387 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2663 transitions. Word has length 79 [2022-01-18 13:31:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:33,387 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2663 transitions. [2022-01-18 13:31:33,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2663 transitions. [2022-01-18 13:31:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:33,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:33,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:33,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-01-18 13:31:33,388 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash -796202996, now seen corresponding path program 282 times [2022-01-18 13:31:33,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:33,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648924475] [2022-01-18 13:31:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:33,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:33,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:33,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648924475] [2022-01-18 13:31:33,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648924475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:33,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:33,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:33,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904488046] [2022-01-18 13:31:33,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:33,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:33,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:33,681 INFO L87 Difference]: Start difference. First operand 1067 states and 2663 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:35,119 INFO L93 Difference]: Finished difference Result 1365 states and 3408 transitions. [2022-01-18 13:31:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 13:31:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:35,121 INFO L225 Difference]: With dead ends: 1365 [2022-01-18 13:31:35,121 INFO L226 Difference]: Without dead ends: 1215 [2022-01-18 13:31:35,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=306, Invalid=3726, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 13:31:35,121 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 360 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:35,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 3013 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:31:35,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-01-18 13:31:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1063. [2022-01-18 13:31:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4971751412429377) internal successors, (2652), 1062 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2652 transitions. [2022-01-18 13:31:35,130 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2652 transitions. Word has length 79 [2022-01-18 13:31:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:35,130 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2652 transitions. [2022-01-18 13:31:35,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2652 transitions. [2022-01-18 13:31:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:35,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:35,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:35,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-01-18 13:31:35,132 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash 65379338, now seen corresponding path program 283 times [2022-01-18 13:31:35,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:35,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679465489] [2022-01-18 13:31:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:35,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:35,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:35,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679465489] [2022-01-18 13:31:35,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679465489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:35,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:35,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:35,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838955808] [2022-01-18 13:31:35,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:35,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:35,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:35,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:35,409 INFO L87 Difference]: Start difference. First operand 1063 states and 2652 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:37,666 INFO L93 Difference]: Finished difference Result 1346 states and 3353 transitions. [2022-01-18 13:31:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:31:37,666 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:37,668 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 13:31:37,668 INFO L226 Difference]: Without dead ends: 1248 [2022-01-18 13:31:37,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:31:37,669 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 309 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:37,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2886 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 13:31:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-01-18 13:31:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1087. [2022-01-18 13:31:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.4953959484346226) internal successors, (2710), 1086 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2710 transitions. [2022-01-18 13:31:37,679 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2710 transitions. Word has length 79 [2022-01-18 13:31:37,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:37,679 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2710 transitions. [2022-01-18 13:31:37,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2710 transitions. [2022-01-18 13:31:37,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:37,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:37,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:37,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-01-18 13:31:37,680 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:37,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1381912230, now seen corresponding path program 284 times [2022-01-18 13:31:37,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:37,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300914918] [2022-01-18 13:31:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:37,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:37,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:37,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300914918] [2022-01-18 13:31:37,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300914918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:37,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:37,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:37,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993755992] [2022-01-18 13:31:37,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:37,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:37,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:37,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:37,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:37,944 INFO L87 Difference]: Start difference. First operand 1087 states and 2710 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:40,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:31:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:41,300 INFO L93 Difference]: Finished difference Result 1390 states and 3446 transitions. [2022-01-18 13:31:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:31:41,300 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:41,301 INFO L225 Difference]: With dead ends: 1390 [2022-01-18 13:31:41,301 INFO L226 Difference]: Without dead ends: 1231 [2022-01-18 13:31:41,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:31:41,302 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 308 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:41,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 2841 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1099 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 13:31:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-01-18 13:31:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1115. [2022-01-18 13:31:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4910233393177736) internal successors, (2775), 1114 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2775 transitions. [2022-01-18 13:31:41,311 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2775 transitions. Word has length 79 [2022-01-18 13:31:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:41,311 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2775 transitions. [2022-01-18 13:31:41,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2775 transitions. [2022-01-18 13:31:41,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:41,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:41,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:41,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-01-18 13:31:41,313 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1579397944, now seen corresponding path program 285 times [2022-01-18 13:31:41,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:41,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115995582] [2022-01-18 13:31:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:41,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:41,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:41,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115995582] [2022-01-18 13:31:41,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115995582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:41,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:41,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:41,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447476214] [2022-01-18 13:31:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:41,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:41,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:41,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:41,585 INFO L87 Difference]: Start difference. First operand 1115 states and 2775 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:43,722 INFO L93 Difference]: Finished difference Result 1433 states and 3567 transitions. [2022-01-18 13:31:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:31:43,722 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:43,724 INFO L225 Difference]: With dead ends: 1433 [2022-01-18 13:31:43,724 INFO L226 Difference]: Without dead ends: 1303 [2022-01-18 13:31:43,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=3364, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:31:43,724 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 371 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:43,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 2837 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:31:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-01-18 13:31:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1147. [2022-01-18 13:31:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.4912739965095985) internal successors, (2855), 1146 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2855 transitions. [2022-01-18 13:31:43,734 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2855 transitions. Word has length 79 [2022-01-18 13:31:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:43,734 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2855 transitions. [2022-01-18 13:31:43,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2855 transitions. [2022-01-18 13:31:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:43,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:43,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:43,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-01-18 13:31:43,735 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:43,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1862178186, now seen corresponding path program 286 times [2022-01-18 13:31:43,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035279821] [2022-01-18 13:31:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:43,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:44,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:44,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035279821] [2022-01-18 13:31:44,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035279821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:44,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:44,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:44,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892310329] [2022-01-18 13:31:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:44,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:44,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:44,014 INFO L87 Difference]: Start difference. First operand 1147 states and 2855 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:45,215 INFO L93 Difference]: Finished difference Result 1404 states and 3493 transitions. [2022-01-18 13:31:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:31:45,215 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:45,217 INFO L225 Difference]: With dead ends: 1404 [2022-01-18 13:31:45,217 INFO L226 Difference]: Without dead ends: 1306 [2022-01-18 13:31:45,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:31:45,217 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 293 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:45,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2997 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:45,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-01-18 13:31:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1151. [2022-01-18 13:31:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.488695652173913) internal successors, (2862), 1150 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2862 transitions. [2022-01-18 13:31:45,229 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2862 transitions. Word has length 79 [2022-01-18 13:31:45,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:45,229 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2862 transitions. [2022-01-18 13:31:45,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:45,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2862 transitions. [2022-01-18 13:31:45,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:45,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:45,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:45,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-01-18 13:31:45,230 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:45,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:45,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1718551832, now seen corresponding path program 287 times [2022-01-18 13:31:45,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:45,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212429464] [2022-01-18 13:31:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:45,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:45,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:45,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212429464] [2022-01-18 13:31:45,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212429464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:45,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:45,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:45,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419406183] [2022-01-18 13:31:45,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:45,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:45,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:45,561 INFO L87 Difference]: Start difference. First operand 1151 states and 2862 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:46,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:46,936 INFO L93 Difference]: Finished difference Result 1372 states and 3409 transitions. [2022-01-18 13:31:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:31:46,937 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:46,938 INFO L225 Difference]: With dead ends: 1372 [2022-01-18 13:31:46,938 INFO L226 Difference]: Without dead ends: 1259 [2022-01-18 13:31:46,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=2912, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:31:46,939 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 307 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:46,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2799 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:31:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-01-18 13:31:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1139. [2022-01-18 13:31:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4894551845342705) internal successors, (2833), 1138 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2833 transitions. [2022-01-18 13:31:46,950 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2833 transitions. Word has length 79 [2022-01-18 13:31:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:46,950 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2833 transitions. [2022-01-18 13:31:46,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2833 transitions. [2022-01-18 13:31:46,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:46,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:46,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:46,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-01-18 13:31:46,951 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1159593240, now seen corresponding path program 288 times [2022-01-18 13:31:46,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:46,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098399719] [2022-01-18 13:31:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:46,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:47,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:47,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098399719] [2022-01-18 13:31:47,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098399719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:47,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:47,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:47,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701202593] [2022-01-18 13:31:47,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:47,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:47,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:47,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:47,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:47,257 INFO L87 Difference]: Start difference. First operand 1139 states and 2833 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:49,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:31:50,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:50,007 INFO L93 Difference]: Finished difference Result 1422 states and 3534 transitions. [2022-01-18 13:31:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:31:50,007 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:50,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:50,009 INFO L225 Difference]: With dead ends: 1422 [2022-01-18 13:31:50,009 INFO L226 Difference]: Without dead ends: 1324 [2022-01-18 13:31:50,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:31:50,009 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 352 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:50,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2833 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 13:31:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-01-18 13:31:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1123. [2022-01-18 13:31:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4928698752228162) internal successors, (2797), 1122 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2797 transitions. [2022-01-18 13:31:50,019 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2797 transitions. Word has length 79 [2022-01-18 13:31:50,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:50,019 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2797 transitions. [2022-01-18 13:31:50,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2797 transitions. [2022-01-18 13:31:50,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:50,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:50,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:50,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-01-18 13:31:50,021 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:50,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:50,021 INFO L85 PathProgramCache]: Analyzing trace with hash 156939652, now seen corresponding path program 289 times [2022-01-18 13:31:50,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:50,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580376781] [2022-01-18 13:31:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:50,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:50,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:50,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580376781] [2022-01-18 13:31:50,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580376781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:50,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:50,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:50,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976512345] [2022-01-18 13:31:50,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:50,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:50,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:50,296 INFO L87 Difference]: Start difference. First operand 1123 states and 2797 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:51,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:51,568 INFO L93 Difference]: Finished difference Result 1390 states and 3446 transitions. [2022-01-18 13:31:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:31:51,568 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:51,570 INFO L225 Difference]: With dead ends: 1390 [2022-01-18 13:31:51,570 INFO L226 Difference]: Without dead ends: 1239 [2022-01-18 13:31:51,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:31:51,570 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 325 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:51,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2796 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-01-18 13:31:51,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1123. [2022-01-18 13:31:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.485739750445633) internal successors, (2789), 1122 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2789 transitions. [2022-01-18 13:31:51,580 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2789 transitions. Word has length 79 [2022-01-18 13:31:51,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:51,580 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2789 transitions. [2022-01-18 13:31:51,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:51,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2789 transitions. [2022-01-18 13:31:51,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:51,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:51,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:51,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-01-18 13:31:51,581 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:51,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1011030760, now seen corresponding path program 290 times [2022-01-18 13:31:51,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:51,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536781721] [2022-01-18 13:31:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:51,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:51,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:51,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536781721] [2022-01-18 13:31:51,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536781721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:51,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:51,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:51,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744687998] [2022-01-18 13:31:51,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:51,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:51,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:51,871 INFO L87 Difference]: Start difference. First operand 1123 states and 2789 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:53,226 INFO L93 Difference]: Finished difference Result 1430 states and 3552 transitions. [2022-01-18 13:31:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:31:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:53,228 INFO L225 Difference]: With dead ends: 1430 [2022-01-18 13:31:53,228 INFO L226 Difference]: Without dead ends: 1332 [2022-01-18 13:31:53,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=310, Invalid=3596, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:31:53,229 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 298 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:53,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 3232 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:31:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2022-01-18 13:31:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1127. [2022-01-18 13:31:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4866785079928952) internal successors, (2800), 1126 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2800 transitions. [2022-01-18 13:31:53,239 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2800 transitions. Word has length 79 [2022-01-18 13:31:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:53,239 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2800 transitions. [2022-01-18 13:31:53,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2800 transitions. [2022-01-18 13:31:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:53,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:53,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:53,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-01-18 13:31:53,240 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1967403644, now seen corresponding path program 291 times [2022-01-18 13:31:53,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:53,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516622258] [2022-01-18 13:31:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:53,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:53,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:53,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516622258] [2022-01-18 13:31:53,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516622258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:53,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:53,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:31:53,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655338506] [2022-01-18 13:31:53,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:53,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:31:53,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:31:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:31:53,510 INFO L87 Difference]: Start difference. First operand 1127 states and 2800 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:55,239 INFO L93 Difference]: Finished difference Result 1386 states and 3435 transitions. [2022-01-18 13:31:55,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 13:31:55,240 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:55,241 INFO L225 Difference]: With dead ends: 1386 [2022-01-18 13:31:55,241 INFO L226 Difference]: Without dead ends: 1251 [2022-01-18 13:31:55,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=302, Invalid=3480, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:31:55,242 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 350 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:55,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2969 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:31:55,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-01-18 13:31:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1127. [2022-01-18 13:31:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.483126110124334) internal successors, (2796), 1126 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2796 transitions. [2022-01-18 13:31:55,252 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2796 transitions. Word has length 79 [2022-01-18 13:31:55,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:55,252 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2796 transitions. [2022-01-18 13:31:55,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2796 transitions. [2022-01-18 13:31:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:55,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:55,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:55,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-01-18 13:31:55,253 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1197048622, now seen corresponding path program 292 times [2022-01-18 13:31:55,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:55,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952581488] [2022-01-18 13:31:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:55,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:55,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:55,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952581488] [2022-01-18 13:31:55,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952581488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:55,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:55,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:55,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307970460] [2022-01-18 13:31:55,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:55,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:55,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:55,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:55,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:55,561 INFO L87 Difference]: Start difference. First operand 1127 states and 2796 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:56,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:31:56,901 INFO L93 Difference]: Finished difference Result 1404 states and 3472 transitions. [2022-01-18 13:31:56,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:31:56,901 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:31:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:31:56,903 INFO L225 Difference]: With dead ends: 1404 [2022-01-18 13:31:56,903 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 13:31:56,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:31:56,903 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 292 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:31:56,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2939 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:31:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 13:31:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1103. [2022-01-18 13:31:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.484573502722323) internal successors, (2738), 1102 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2738 transitions. [2022-01-18 13:31:56,913 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2738 transitions. Word has length 79 [2022-01-18 13:31:56,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:31:56,914 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2738 transitions. [2022-01-18 13:31:56,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:31:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2738 transitions. [2022-01-18 13:31:56,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:31:56,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:31:56,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:31:56,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-01-18 13:31:56,915 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:31:56,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:31:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash -38797690, now seen corresponding path program 293 times [2022-01-18 13:31:56,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:31:56,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070844485] [2022-01-18 13:31:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:31:56,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:31:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:31:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:31:57,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:31:57,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070844485] [2022-01-18 13:31:57,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070844485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:31:57,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:31:57,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:31:57,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290293985] [2022-01-18 13:31:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:31:57,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:31:57,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:31:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:31:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:31:57,198 INFO L87 Difference]: Start difference. First operand 1103 states and 2738 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:00,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:32:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:00,930 INFO L93 Difference]: Finished difference Result 1441 states and 3597 transitions. [2022-01-18 13:32:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:32:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:00,932 INFO L225 Difference]: With dead ends: 1441 [2022-01-18 13:32:00,932 INFO L226 Difference]: Without dead ends: 1311 [2022-01-18 13:32:00,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=280, Invalid=3142, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:32:00,933 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 363 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:00,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2669 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-18 13:32:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-01-18 13:32:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1163. [2022-01-18 13:32:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.491394148020654) internal successors, (2895), 1162 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2895 transitions. [2022-01-18 13:32:00,943 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2895 transitions. Word has length 79 [2022-01-18 13:32:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:00,943 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2895 transitions. [2022-01-18 13:32:00,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2895 transitions. [2022-01-18 13:32:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:00,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:00,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:00,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-01-18 13:32:00,945 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:00,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash -892188856, now seen corresponding path program 294 times [2022-01-18 13:32:00,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:00,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560698342] [2022-01-18 13:32:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:00,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:01,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:01,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560698342] [2022-01-18 13:32:01,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560698342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:01,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:01,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:01,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208392843] [2022-01-18 13:32:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:01,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:01,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:01,247 INFO L87 Difference]: Start difference. First operand 1163 states and 2895 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:02,715 INFO L93 Difference]: Finished difference Result 1452 states and 3617 transitions. [2022-01-18 13:32:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 13:32:02,715 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:02,717 INFO L225 Difference]: With dead ends: 1452 [2022-01-18 13:32:02,717 INFO L226 Difference]: Without dead ends: 1354 [2022-01-18 13:32:02,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=310, Invalid=3722, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 13:32:02,718 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 393 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:02,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 2937 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:32:02,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-01-18 13:32:02,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1167. [2022-01-18 13:32:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.48885077186964) internal successors, (2902), 1166 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2902 transitions. [2022-01-18 13:32:02,728 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2902 transitions. Word has length 79 [2022-01-18 13:32:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:02,728 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2902 transitions. [2022-01-18 13:32:02,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2902 transitions. [2022-01-18 13:32:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:02,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:02,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:02,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-01-18 13:32:02,729 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:02,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:02,730 INFO L85 PathProgramCache]: Analyzing trace with hash -177951578, now seen corresponding path program 295 times [2022-01-18 13:32:02,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:02,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505574867] [2022-01-18 13:32:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:02,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:03,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505574867] [2022-01-18 13:32:03,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505574867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:03,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:03,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:03,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774705900] [2022-01-18 13:32:03,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:03,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:03,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:03,035 INFO L87 Difference]: Start difference. First operand 1167 states and 2902 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:04,513 INFO L93 Difference]: Finished difference Result 1435 states and 3568 transitions. [2022-01-18 13:32:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 13:32:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:04,514 INFO L225 Difference]: With dead ends: 1435 [2022-01-18 13:32:04,515 INFO L226 Difference]: Without dead ends: 1322 [2022-01-18 13:32:04,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=303, Invalid=3603, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:32:04,515 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 400 mSDsluCounter, 2876 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:04,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 2957 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:32:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-01-18 13:32:04,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1155. [2022-01-18 13:32:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.4861351819757367) internal successors, (2869), 1154 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2869 transitions. [2022-01-18 13:32:04,532 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2869 transitions. Word has length 79 [2022-01-18 13:32:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:04,532 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2869 transitions. [2022-01-18 13:32:04,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2869 transitions. [2022-01-18 13:32:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:04,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:04,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:04,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-01-18 13:32:04,533 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:04,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:04,533 INFO L85 PathProgramCache]: Analyzing trace with hash 147496648, now seen corresponding path program 296 times [2022-01-18 13:32:04,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:04,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732621043] [2022-01-18 13:32:04,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:04,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:04,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:04,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732621043] [2022-01-18 13:32:04,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732621043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:04,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:04,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:04,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052144535] [2022-01-18 13:32:04,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:04,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:04,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:04,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:04,805 INFO L87 Difference]: Start difference. First operand 1155 states and 2869 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:06,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:06,160 INFO L93 Difference]: Finished difference Result 1413 states and 3508 transitions. [2022-01-18 13:32:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:32:06,161 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:06,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:06,162 INFO L225 Difference]: With dead ends: 1413 [2022-01-18 13:32:06,162 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 13:32:06,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=2826, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:32:06,163 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 285 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:06,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 3040 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:32:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 13:32:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1151. [2022-01-18 13:32:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.485217391304348) internal successors, (2858), 1150 states have internal predecessors, (2858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2858 transitions. [2022-01-18 13:32:06,173 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2858 transitions. Word has length 79 [2022-01-18 13:32:06,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:06,173 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2858 transitions. [2022-01-18 13:32:06,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2858 transitions. [2022-01-18 13:32:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:06,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:06,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:06,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-01-18 13:32:06,174 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1009078982, now seen corresponding path program 297 times [2022-01-18 13:32:06,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:06,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526986202] [2022-01-18 13:32:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:06,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:06,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:06,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526986202] [2022-01-18 13:32:06,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526986202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:06,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:06,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:06,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243144964] [2022-01-18 13:32:06,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:06,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:06,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:06,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:06,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:06,453 INFO L87 Difference]: Start difference. First operand 1151 states and 2858 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:08,328 INFO L93 Difference]: Finished difference Result 1426 states and 3537 transitions. [2022-01-18 13:32:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:32:08,328 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:08,329 INFO L225 Difference]: With dead ends: 1426 [2022-01-18 13:32:08,329 INFO L226 Difference]: Without dead ends: 1328 [2022-01-18 13:32:08,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=3032, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:32:08,330 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 356 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:08,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2852 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 13:32:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2022-01-18 13:32:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1127. [2022-01-18 13:32:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4902309058614565) internal successors, (2804), 1126 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:08,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2804 transitions. [2022-01-18 13:32:08,339 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2804 transitions. Word has length 79 [2022-01-18 13:32:08,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:08,340 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2804 transitions. [2022-01-18 13:32:08,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2804 transitions. [2022-01-18 13:32:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:08,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:08,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:08,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-01-18 13:32:08,341 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:08,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1969355422, now seen corresponding path program 298 times [2022-01-18 13:32:08,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:08,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322186047] [2022-01-18 13:32:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:08,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:08,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322186047] [2022-01-18 13:32:08,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322186047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:08,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:08,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:08,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838616406] [2022-01-18 13:32:08,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:08,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:08,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:08,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:08,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:08,602 INFO L87 Difference]: Start difference. First operand 1127 states and 2804 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:10,252 INFO L93 Difference]: Finished difference Result 1409 states and 3484 transitions. [2022-01-18 13:32:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:32:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:10,254 INFO L225 Difference]: With dead ends: 1409 [2022-01-18 13:32:10,254 INFO L226 Difference]: Without dead ends: 1250 [2022-01-18 13:32:10,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=2819, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:32:10,255 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 291 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:10,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 3055 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:32:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-01-18 13:32:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1127. [2022-01-18 13:32:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.483126110124334) internal successors, (2796), 1126 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2796 transitions. [2022-01-18 13:32:10,264 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2796 transitions. Word has length 79 [2022-01-18 13:32:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:10,265 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2796 transitions. [2022-01-18 13:32:10,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2796 transitions. [2022-01-18 13:32:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:10,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:10,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:10,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-01-18 13:32:10,266 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash 614662184, now seen corresponding path program 299 times [2022-01-18 13:32:10,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:10,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13230261] [2022-01-18 13:32:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:10,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:10,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:10,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13230261] [2022-01-18 13:32:10,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13230261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:10,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:10,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:10,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986105954] [2022-01-18 13:32:10,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:10,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:10,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:10,537 INFO L87 Difference]: Start difference. First operand 1127 states and 2796 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:11,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:11,753 INFO L93 Difference]: Finished difference Result 1413 states and 3512 transitions. [2022-01-18 13:32:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:32:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:11,755 INFO L225 Difference]: With dead ends: 1413 [2022-01-18 13:32:11,755 INFO L226 Difference]: Without dead ends: 1283 [2022-01-18 13:32:11,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=283, Invalid=3257, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 13:32:11,755 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 310 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:11,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2819 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:32:11,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-01-18 13:32:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1147. [2022-01-18 13:32:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.480802792321117) internal successors, (2843), 1146 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2843 transitions. [2022-01-18 13:32:11,765 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2843 transitions. Word has length 79 [2022-01-18 13:32:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:11,765 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2843 transitions. [2022-01-18 13:32:11,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2843 transitions. [2022-01-18 13:32:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:11,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:11,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:11,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-01-18 13:32:11,766 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:11,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash -238728982, now seen corresponding path program 300 times [2022-01-18 13:32:11,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:11,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748715306] [2022-01-18 13:32:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:11,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:12,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:12,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748715306] [2022-01-18 13:32:12,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748715306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:12,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:12,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:12,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307191198] [2022-01-18 13:32:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:12,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:12,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:12,057 INFO L87 Difference]: Start difference. First operand 1147 states and 2843 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:14,378 INFO L93 Difference]: Finished difference Result 1404 states and 3481 transitions. [2022-01-18 13:32:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 13:32:14,378 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:14,380 INFO L225 Difference]: With dead ends: 1404 [2022-01-18 13:32:14,380 INFO L226 Difference]: Without dead ends: 1306 [2022-01-18 13:32:14,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=308, Invalid=3724, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 13:32:14,380 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 358 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:14,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 3085 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 13:32:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-01-18 13:32:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1151. [2022-01-18 13:32:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4782608695652173) internal successors, (2850), 1150 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2850 transitions. [2022-01-18 13:32:14,391 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2850 transitions. Word has length 79 [2022-01-18 13:32:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:14,391 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2850 transitions. [2022-01-18 13:32:14,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2850 transitions. [2022-01-18 13:32:14,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:14,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:14,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:14,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-01-18 13:32:14,392 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:14,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:14,392 INFO L85 PathProgramCache]: Analyzing trace with hash 475508296, now seen corresponding path program 301 times [2022-01-18 13:32:14,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:14,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987967764] [2022-01-18 13:32:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:14,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:14,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:14,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987967764] [2022-01-18 13:32:14,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987967764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:14,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:14,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:14,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903116007] [2022-01-18 13:32:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:14,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:14,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:14,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:14,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:14,684 INFO L87 Difference]: Start difference. First operand 1151 states and 2850 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:17,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:32:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:18,455 INFO L93 Difference]: Finished difference Result 1399 states and 3465 transitions. [2022-01-18 13:32:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 13:32:18,456 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:18,457 INFO L225 Difference]: With dead ends: 1399 [2022-01-18 13:32:18,457 INFO L226 Difference]: Without dead ends: 1286 [2022-01-18 13:32:18,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=313, Invalid=3847, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 13:32:18,457 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 412 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:18,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 2880 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1124 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 13:32:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-01-18 13:32:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1139. [2022-01-18 13:32:18,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4824253075571177) internal successors, (2825), 1138 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2825 transitions. [2022-01-18 13:32:18,467 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2825 transitions. Word has length 79 [2022-01-18 13:32:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:18,467 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2825 transitions. [2022-01-18 13:32:18,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2825 transitions. [2022-01-18 13:32:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:18,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:18,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:18,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-01-18 13:32:18,468 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash 800956522, now seen corresponding path program 302 times [2022-01-18 13:32:18,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:18,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840368523] [2022-01-18 13:32:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:18,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:18,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:18,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840368523] [2022-01-18 13:32:18,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840368523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:18,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:18,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:18,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76781201] [2022-01-18 13:32:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:18,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:18,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:18,742 INFO L87 Difference]: Start difference. First operand 1139 states and 2825 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:20,048 INFO L93 Difference]: Finished difference Result 1393 states and 3453 transitions. [2022-01-18 13:32:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:32:20,049 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:20,050 INFO L225 Difference]: With dead ends: 1393 [2022-01-18 13:32:20,050 INFO L226 Difference]: Without dead ends: 1243 [2022-01-18 13:32:20,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=2932, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:32:20,051 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 341 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:20,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2727 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:32:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-01-18 13:32:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1135. [2022-01-18 13:32:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4814814814814814) internal successors, (2814), 1134 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2814 transitions. [2022-01-18 13:32:20,061 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2814 transitions. Word has length 79 [2022-01-18 13:32:20,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:20,062 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2814 transitions. [2022-01-18 13:32:20,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:20,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2814 transitions. [2022-01-18 13:32:20,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:20,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:20,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:20,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-01-18 13:32:20,063 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:20,063 INFO L85 PathProgramCache]: Analyzing trace with hash 94375558, now seen corresponding path program 303 times [2022-01-18 13:32:20,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:20,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819989066] [2022-01-18 13:32:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:20,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:20,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:20,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819989066] [2022-01-18 13:32:20,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819989066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:20,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:20,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:20,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761844448] [2022-01-18 13:32:20,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:20,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:20,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:20,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:20,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:20,344 INFO L87 Difference]: Start difference. First operand 1135 states and 2814 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:21,665 INFO L93 Difference]: Finished difference Result 1405 states and 3478 transitions. [2022-01-18 13:32:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:32:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:21,667 INFO L225 Difference]: With dead ends: 1405 [2022-01-18 13:32:21,667 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 13:32:21,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=3043, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:32:21,668 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 343 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:21,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2753 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:32:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 13:32:21,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1111. [2022-01-18 13:32:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.4792792792792793) internal successors, (2752), 1110 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2752 transitions. [2022-01-18 13:32:21,677 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2752 transitions. Word has length 79 [2022-01-18 13:32:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:21,677 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2752 transitions. [2022-01-18 13:32:21,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2752 transitions. [2022-01-18 13:32:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:21,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:21,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:21,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-01-18 13:32:21,678 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1363674998, now seen corresponding path program 304 times [2022-01-18 13:32:21,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:21,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044454248] [2022-01-18 13:32:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:21,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:21,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:21,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044454248] [2022-01-18 13:32:21,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044454248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:21,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:21,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:21,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573160279] [2022-01-18 13:32:21,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:21,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:21,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:21,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:21,975 INFO L87 Difference]: Start difference. First operand 1111 states and 2752 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:23,626 INFO L93 Difference]: Finished difference Result 1393 states and 3457 transitions. [2022-01-18 13:32:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:32:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:23,628 INFO L225 Difference]: With dead ends: 1393 [2022-01-18 13:32:23,628 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 13:32:23,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=284, Invalid=3376, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:32:23,628 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 325 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:23,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2982 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:32:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 13:32:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1135. [2022-01-18 13:32:23,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4779541446208113) internal successors, (2810), 1134 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2810 transitions. [2022-01-18 13:32:23,638 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2810 transitions. Word has length 79 [2022-01-18 13:32:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:23,638 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2810 transitions. [2022-01-18 13:32:23,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2810 transitions. [2022-01-18 13:32:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:23,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:23,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:23,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-01-18 13:32:23,639 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:23,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2077901132, now seen corresponding path program 305 times [2022-01-18 13:32:23,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:23,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701036439] [2022-01-18 13:32:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:23,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:23,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:23,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701036439] [2022-01-18 13:32:23,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701036439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:23,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:23,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:23,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902823921] [2022-01-18 13:32:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:23,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:23,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:23,934 INFO L87 Difference]: Start difference. First operand 1135 states and 2810 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:26,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:32:28,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:32:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:29,462 INFO L93 Difference]: Finished difference Result 1381 states and 3424 transitions. [2022-01-18 13:32:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:32:29,463 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:29,464 INFO L225 Difference]: With dead ends: 1381 [2022-01-18 13:32:29,464 INFO L226 Difference]: Without dead ends: 1283 [2022-01-18 13:32:29,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=2833, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:32:29,464 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 313 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:29,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2745 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1076 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-01-18 13:32:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-01-18 13:32:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1139. [2022-01-18 13:32:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.475395430579965) internal successors, (2817), 1138 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2817 transitions. [2022-01-18 13:32:29,474 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2817 transitions. Word has length 79 [2022-01-18 13:32:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:29,474 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2817 transitions. [2022-01-18 13:32:29,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2817 transitions. [2022-01-18 13:32:29,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:29,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:29,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:29,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-01-18 13:32:29,475 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1502828886, now seen corresponding path program 306 times [2022-01-18 13:32:29,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:29,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513121408] [2022-01-18 13:32:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:29,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:29,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:29,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513121408] [2022-01-18 13:32:29,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513121408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:29,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:29,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:29,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519874562] [2022-01-18 13:32:29,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:29,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:29,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:29,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:29,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:29,764 INFO L87 Difference]: Start difference. First operand 1139 states and 2817 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:30,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:30,964 INFO L93 Difference]: Finished difference Result 1367 states and 3377 transitions. [2022-01-18 13:32:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:32:30,964 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:30,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:30,965 INFO L225 Difference]: With dead ends: 1367 [2022-01-18 13:32:30,965 INFO L226 Difference]: Without dead ends: 1254 [2022-01-18 13:32:30,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=2524, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:32:30,966 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 277 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:30,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2890 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:32:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-01-18 13:32:30,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1127. [2022-01-18 13:32:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.479573712255773) internal successors, (2792), 1126 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2792 transitions. [2022-01-18 13:32:30,976 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2792 transitions. Word has length 79 [2022-01-18 13:32:30,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:30,976 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2792 transitions. [2022-01-18 13:32:30,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:30,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2792 transitions. [2022-01-18 13:32:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:30,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:30,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:30,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-01-18 13:32:30,977 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1177380660, now seen corresponding path program 307 times [2022-01-18 13:32:30,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:30,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028371640] [2022-01-18 13:32:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:30,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:31,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:31,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028371640] [2022-01-18 13:32:31,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028371640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:31,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:31,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:31,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185333742] [2022-01-18 13:32:31,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:31,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:31,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:31,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:31,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:31,281 INFO L87 Difference]: Start difference. First operand 1127 states and 2792 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:33,465 INFO L93 Difference]: Finished difference Result 1373 states and 3398 transitions. [2022-01-18 13:32:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:32:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:33,467 INFO L225 Difference]: With dead ends: 1373 [2022-01-18 13:32:33,467 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 13:32:33,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=3045, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:32:33,467 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 353 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:33,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 2880 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:32:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 13:32:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1123. [2022-01-18 13:32:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.478609625668449) internal successors, (2781), 1122 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2781 transitions. [2022-01-18 13:32:33,477 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2781 transitions. Word has length 79 [2022-01-18 13:32:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:33,477 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2781 transitions. [2022-01-18 13:32:33,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2781 transitions. [2022-01-18 13:32:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:33,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:33,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:33,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-01-18 13:32:33,479 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:33,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1883961624, now seen corresponding path program 308 times [2022-01-18 13:32:33,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:33,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582062775] [2022-01-18 13:32:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:33,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:33,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:33,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582062775] [2022-01-18 13:32:33,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582062775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:33,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:33,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:33,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94288743] [2022-01-18 13:32:33,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:33,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:33,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:33,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:33,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:33,777 INFO L87 Difference]: Start difference. First operand 1123 states and 2781 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:35,542 INFO L93 Difference]: Finished difference Result 1397 states and 3456 transitions. [2022-01-18 13:32:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:32:35,542 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:35,544 INFO L225 Difference]: With dead ends: 1397 [2022-01-18 13:32:35,544 INFO L226 Difference]: Without dead ends: 1211 [2022-01-18 13:32:35,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=3382, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:32:35,544 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 333 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:35,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 3151 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:32:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-01-18 13:32:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1115. [2022-01-18 13:32:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.476660682226212) internal successors, (2759), 1114 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2759 transitions. [2022-01-18 13:32:35,554 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2759 transitions. Word has length 79 [2022-01-18 13:32:35,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:35,554 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2759 transitions. [2022-01-18 13:32:35,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:35,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2759 transitions. [2022-01-18 13:32:35,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:35,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:35,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:35,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-01-18 13:32:35,556 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 60251718, now seen corresponding path program 309 times [2022-01-18 13:32:35,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:35,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602955495] [2022-01-18 13:32:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:35,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:35,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:35,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602955495] [2022-01-18 13:32:35,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602955495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:35,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:35,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:32:35,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975765887] [2022-01-18 13:32:35,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:35,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:32:35,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:32:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:32:35,871 INFO L87 Difference]: Start difference. First operand 1115 states and 2759 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:37,385 INFO L93 Difference]: Finished difference Result 1401 states and 3459 transitions. [2022-01-18 13:32:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:32:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:37,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:37,386 INFO L225 Difference]: With dead ends: 1401 [2022-01-18 13:32:37,386 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:32:37,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=3048, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:32:37,387 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 333 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:37,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2943 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:32:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:32:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1099. [2022-01-18 13:32:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4836065573770494) internal successors, (2727), 1098 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2727 transitions. [2022-01-18 13:32:37,397 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2727 transitions. Word has length 79 [2022-01-18 13:32:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:37,397 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2727 transitions. [2022-01-18 13:32:37,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2727 transitions. [2022-01-18 13:32:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:37,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:37,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:37,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-01-18 13:32:37,398 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:37,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1245773446, now seen corresponding path program 310 times [2022-01-18 13:32:37,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:37,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530530395] [2022-01-18 13:32:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:37,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:37,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:37,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530530395] [2022-01-18 13:32:37,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530530395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:37,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:37,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:37,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537626681] [2022-01-18 13:32:37,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:37,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:37,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:37,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:37,678 INFO L87 Difference]: Start difference. First operand 1099 states and 2727 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:39,005 INFO L93 Difference]: Finished difference Result 1409 states and 3509 transitions. [2022-01-18 13:32:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:32:39,006 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:39,007 INFO L225 Difference]: With dead ends: 1409 [2022-01-18 13:32:39,007 INFO L226 Difference]: Without dead ends: 1279 [2022-01-18 13:32:39,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:32:39,008 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 328 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:39,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2997 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:32:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-01-18 13:32:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1159. [2022-01-18 13:32:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.4905008635578585) internal successors, (2884), 1158 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2884 transitions. [2022-01-18 13:32:39,018 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2884 transitions. Word has length 79 [2022-01-18 13:32:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:39,018 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2884 transitions. [2022-01-18 13:32:39,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2884 transitions. [2022-01-18 13:32:39,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:39,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:39,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:39,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-01-18 13:32:39,019 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:39,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:39,019 INFO L85 PathProgramCache]: Analyzing trace with hash 392382280, now seen corresponding path program 311 times [2022-01-18 13:32:39,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:39,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604989130] [2022-01-18 13:32:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:39,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:39,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:39,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604989130] [2022-01-18 13:32:39,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604989130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:39,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:39,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:39,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225287371] [2022-01-18 13:32:39,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:39,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:39,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:39,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:39,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:39,299 INFO L87 Difference]: Start difference. First operand 1159 states and 2884 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:40,544 INFO L93 Difference]: Finished difference Result 1408 states and 3500 transitions. [2022-01-18 13:32:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:32:40,544 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:40,545 INFO L225 Difference]: With dead ends: 1408 [2022-01-18 13:32:40,545 INFO L226 Difference]: Without dead ends: 1310 [2022-01-18 13:32:40,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:32:40,546 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 289 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:40,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2875 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:32:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-01-18 13:32:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1163. [2022-01-18 13:32:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.4879518072289155) internal successors, (2891), 1162 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2891 transitions. [2022-01-18 13:32:40,556 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2891 transitions. Word has length 79 [2022-01-18 13:32:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:40,556 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2891 transitions. [2022-01-18 13:32:40,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2891 transitions. [2022-01-18 13:32:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:40,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:40,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:40,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-01-18 13:32:40,557 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1106619558, now seen corresponding path program 312 times [2022-01-18 13:32:40,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:40,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276225290] [2022-01-18 13:32:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:40,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:40,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:40,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276225290] [2022-01-18 13:32:40,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276225290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:40,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:40,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:40,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149518968] [2022-01-18 13:32:40,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:40,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:40,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:40,848 INFO L87 Difference]: Start difference. First operand 1163 states and 2891 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:42,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:42,426 INFO L93 Difference]: Finished difference Result 1391 states and 3451 transitions. [2022-01-18 13:32:42,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:32:42,427 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:42,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:42,428 INFO L225 Difference]: With dead ends: 1391 [2022-01-18 13:32:42,428 INFO L226 Difference]: Without dead ends: 1278 [2022-01-18 13:32:42,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:32:42,429 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 318 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:42,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 3026 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:32:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-01-18 13:32:42,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1151. [2022-01-18 13:32:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.485217391304348) internal successors, (2858), 1150 states have internal predecessors, (2858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2858 transitions. [2022-01-18 13:32:42,439 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2858 transitions. Word has length 79 [2022-01-18 13:32:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:42,439 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2858 transitions. [2022-01-18 13:32:42,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2858 transitions. [2022-01-18 13:32:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:42,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:42,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:42,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-01-18 13:32:42,440 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:42,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:42,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1432067784, now seen corresponding path program 313 times [2022-01-18 13:32:42,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:42,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761333847] [2022-01-18 13:32:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:42,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:42,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:42,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761333847] [2022-01-18 13:32:42,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761333847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:42,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:42,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:32:42,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903984013] [2022-01-18 13:32:42,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:42,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:32:42,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:42,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:32:42,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:32:42,722 INFO L87 Difference]: Start difference. First operand 1151 states and 2858 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:44,310 INFO L93 Difference]: Finished difference Result 1385 states and 3431 transitions. [2022-01-18 13:32:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:32:44,310 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:44,312 INFO L225 Difference]: With dead ends: 1385 [2022-01-18 13:32:44,312 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 13:32:44,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=2821, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:32:44,312 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 331 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:44,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2786 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:32:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 13:32:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1147. [2022-01-18 13:32:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.4842931937172774) internal successors, (2847), 1146 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2847 transitions. [2022-01-18 13:32:44,322 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2847 transitions. Word has length 79 [2022-01-18 13:32:44,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:44,322 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2847 transitions. [2022-01-18 13:32:44,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2847 transitions. [2022-01-18 13:32:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:44,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:44,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:44,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-01-18 13:32:44,323 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:44,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2001317178, now seen corresponding path program 314 times [2022-01-18 13:32:44,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:44,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555373389] [2022-01-18 13:32:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:44,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:44,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:44,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555373389] [2022-01-18 13:32:44,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555373389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:44,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:44,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:32:44,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154366055] [2022-01-18 13:32:44,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:44,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:32:44,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:32:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:32:44,590 INFO L87 Difference]: Start difference. First operand 1147 states and 2847 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:46,235 INFO L93 Difference]: Finished difference Result 1390 states and 3438 transitions. [2022-01-18 13:32:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:32:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:46,237 INFO L225 Difference]: With dead ends: 1390 [2022-01-18 13:32:46,237 INFO L226 Difference]: Without dead ends: 1292 [2022-01-18 13:32:46,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=256, Invalid=2500, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:32:46,238 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 295 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:46,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2679 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:32:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2022-01-18 13:32:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1123. [2022-01-18 13:32:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4893048128342246) internal successors, (2793), 1122 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2793 transitions. [2022-01-18 13:32:46,247 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2793 transitions. Word has length 79 [2022-01-18 13:32:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:46,247 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2793 transitions. [2022-01-18 13:32:46,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2793 transitions. [2022-01-18 13:32:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:46,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:46,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:46,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-01-18 13:32:46,249 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash -684784286, now seen corresponding path program 315 times [2022-01-18 13:32:46,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:46,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363514348] [2022-01-18 13:32:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:46,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:46,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:46,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363514348] [2022-01-18 13:32:46,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363514348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:46,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:46,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:32:46,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942916688] [2022-01-18 13:32:46,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:46,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:32:46,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:32:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:32:46,492 INFO L87 Difference]: Start difference. First operand 1123 states and 2793 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:49,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:32:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:50,279 INFO L93 Difference]: Finished difference Result 1358 states and 3350 transitions. [2022-01-18 13:32:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:32:50,280 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:50,281 INFO L225 Difference]: With dead ends: 1358 [2022-01-18 13:32:50,281 INFO L226 Difference]: Without dead ends: 1199 [2022-01-18 13:32:50,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:32:50,281 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 317 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:50,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2639 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 994 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-01-18 13:32:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-01-18 13:32:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1123. [2022-01-18 13:32:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.482174688057041) internal successors, (2785), 1122 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2785 transitions. [2022-01-18 13:32:50,291 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2785 transitions. Word has length 79 [2022-01-18 13:32:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:50,291 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2785 transitions. [2022-01-18 13:32:50,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2785 transitions. [2022-01-18 13:32:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:50,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:50,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:50,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-01-18 13:32:50,292 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:50,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:50,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1587384008, now seen corresponding path program 316 times [2022-01-18 13:32:50,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:50,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033054765] [2022-01-18 13:32:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:50,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:50,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:50,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033054765] [2022-01-18 13:32:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033054765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:50,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:50,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:32:50,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216016020] [2022-01-18 13:32:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:50,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:32:50,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:32:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:32:50,558 INFO L87 Difference]: Start difference. First operand 1123 states and 2785 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:53,059 INFO L93 Difference]: Finished difference Result 1353 states and 3351 transitions. [2022-01-18 13:32:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:32:53,060 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:53,061 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:32:53,061 INFO L226 Difference]: Without dead ends: 1239 [2022-01-18 13:32:53,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:32:53,062 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 325 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:53,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2472 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 13:32:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-01-18 13:32:53,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1147. [2022-01-18 13:32:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.4842931937172774) internal successors, (2847), 1146 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2847 transitions. [2022-01-18 13:32:53,072 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2847 transitions. Word has length 79 [2022-01-18 13:32:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:53,072 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2847 transitions. [2022-01-18 13:32:53,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2847 transitions. [2022-01-18 13:32:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:53,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:53,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:53,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-01-18 13:32:53,073 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1220489578, now seen corresponding path program 317 times [2022-01-18 13:32:53,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:53,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224751717] [2022-01-18 13:32:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:53,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:53,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:53,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224751717] [2022-01-18 13:32:53,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224751717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:53,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:53,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:32:53,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590169671] [2022-01-18 13:32:53,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:53,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:32:53,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:32:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:32:53,332 INFO L87 Difference]: Start difference. First operand 1147 states and 2847 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:55,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:32:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:56,504 INFO L93 Difference]: Finished difference Result 1364 states and 3375 transitions. [2022-01-18 13:32:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:32:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:56,506 INFO L225 Difference]: With dead ends: 1364 [2022-01-18 13:32:56,506 INFO L226 Difference]: Without dead ends: 1266 [2022-01-18 13:32:56,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:32:56,506 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 281 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:56,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2663 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1051 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:32:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-01-18 13:32:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1151. [2022-01-18 13:32:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4817391304347827) internal successors, (2854), 1150 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2854 transitions. [2022-01-18 13:32:56,516 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2854 transitions. Word has length 79 [2022-01-18 13:32:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:56,516 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2854 transitions. [2022-01-18 13:32:56,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2854 transitions. [2022-01-18 13:32:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:56,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:56,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:56,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-01-18 13:32:56,517 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:56,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1934726856, now seen corresponding path program 318 times [2022-01-18 13:32:56,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:56,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967737870] [2022-01-18 13:32:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:56,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:56,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:56,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967737870] [2022-01-18 13:32:56,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967737870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:56,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:56,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:32:56,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798574530] [2022-01-18 13:32:56,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:56,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:32:56,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:32:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:32:56,775 INFO L87 Difference]: Start difference. First operand 1151 states and 2854 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:58,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:32:58,317 INFO L93 Difference]: Finished difference Result 1332 states and 3291 transitions. [2022-01-18 13:32:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:32:58,317 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:32:58,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:32:58,318 INFO L225 Difference]: With dead ends: 1332 [2022-01-18 13:32:58,318 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 13:32:58,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:32:58,319 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 323 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:32:58,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2377 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:32:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 13:32:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1143. [2022-01-18 13:32:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4833625218914186) internal successors, (2836), 1142 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2836 transitions. [2022-01-18 13:32:58,329 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2836 transitions. Word has length 79 [2022-01-18 13:32:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:32:58,329 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2836 transitions. [2022-01-18 13:32:58,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:32:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2836 transitions. [2022-01-18 13:32:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:32:58,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:32:58,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:32:58,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-01-18 13:32:58,330 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:32:58,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:32:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1889549626, now seen corresponding path program 319 times [2022-01-18 13:32:58,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:32:58,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944478707] [2022-01-18 13:32:58,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:32:58,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:32:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:32:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:32:58,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:32:58,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944478707] [2022-01-18 13:32:58,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944478707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:32:58,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:32:58,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:32:58,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088554186] [2022-01-18 13:32:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:32:58,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:32:58,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:32:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:32:58,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:32:58,598 INFO L87 Difference]: Start difference. First operand 1143 states and 2836 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:00,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:33:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:00,898 INFO L93 Difference]: Finished difference Result 1386 states and 3427 transitions. [2022-01-18 13:33:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:33:00,898 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:00,900 INFO L225 Difference]: With dead ends: 1386 [2022-01-18 13:33:00,900 INFO L226 Difference]: Without dead ends: 1288 [2022-01-18 13:33:00,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:33:00,900 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 271 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:00,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2839 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 13:33:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-01-18 13:33:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1135. [2022-01-18 13:33:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4850088183421515) internal successors, (2818), 1134 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2818 transitions. [2022-01-18 13:33:00,909 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2818 transitions. Word has length 79 [2022-01-18 13:33:00,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:00,910 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2818 transitions. [2022-01-18 13:33:00,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:00,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2818 transitions. [2022-01-18 13:33:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:00,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:00,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:00,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-01-18 13:33:00,911 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash -573016734, now seen corresponding path program 320 times [2022-01-18 13:33:00,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:00,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367484545] [2022-01-18 13:33:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:00,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:01,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:01,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367484545] [2022-01-18 13:33:01,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367484545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:01,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:01,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:01,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959502488] [2022-01-18 13:33:01,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:01,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:01,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:01,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:01,164 INFO L87 Difference]: Start difference. First operand 1135 states and 2818 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:02,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:02,417 INFO L93 Difference]: Finished difference Result 1354 states and 3339 transitions. [2022-01-18 13:33:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:33:02,418 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:02,419 INFO L225 Difference]: With dead ends: 1354 [2022-01-18 13:33:02,419 INFO L226 Difference]: Without dead ends: 1211 [2022-01-18 13:33:02,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:33:02,420 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 317 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:02,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2590 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:33:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-01-18 13:33:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1135. [2022-01-18 13:33:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4814814814814814) internal successors, (2814), 1134 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2814 transitions. [2022-01-18 13:33:02,429 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2814 transitions. Word has length 79 [2022-01-18 13:33:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:02,429 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2814 transitions. [2022-01-18 13:33:02,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2814 transitions. [2022-01-18 13:33:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:02,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:02,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:02,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-01-18 13:33:02,431 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1055665756, now seen corresponding path program 321 times [2022-01-18 13:33:02,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:02,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969135390] [2022-01-18 13:33:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:02,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:02,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:02,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969135390] [2022-01-18 13:33:02,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969135390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:02,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:02,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:02,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988757494] [2022-01-18 13:33:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:02,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:02,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:02,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:02,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:02,726 INFO L87 Difference]: Start difference. First operand 1135 states and 2814 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:04,085 INFO L93 Difference]: Finished difference Result 1414 states and 3500 transitions. [2022-01-18 13:33:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:33:04,085 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:04,086 INFO L225 Difference]: With dead ends: 1414 [2022-01-18 13:33:04,086 INFO L226 Difference]: Without dead ends: 1316 [2022-01-18 13:33:04,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:33:04,087 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 293 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:04,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2895 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:33:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2022-01-18 13:33:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1139. [2022-01-18 13:33:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4824253075571177) internal successors, (2825), 1138 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:04,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2825 transitions. [2022-01-18 13:33:04,096 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2825 transitions. Word has length 79 [2022-01-18 13:33:04,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:04,096 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2825 transitions. [2022-01-18 13:33:04,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:04,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2825 transitions. [2022-01-18 13:33:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:04,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:04,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:04,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-01-18 13:33:04,098 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:04,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:04,098 INFO L85 PathProgramCache]: Analyzing trace with hash 260867136, now seen corresponding path program 322 times [2022-01-18 13:33:04,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:04,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374602462] [2022-01-18 13:33:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:04,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:04,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:04,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374602462] [2022-01-18 13:33:04,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374602462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:04,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:04,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:04,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319273763] [2022-01-18 13:33:04,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:04,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:04,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:04,361 INFO L87 Difference]: Start difference. First operand 1139 states and 2825 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:06,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:33:08,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:08,028 INFO L93 Difference]: Finished difference Result 1370 states and 3383 transitions. [2022-01-18 13:33:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:33:08,028 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:08,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:08,029 INFO L225 Difference]: With dead ends: 1370 [2022-01-18 13:33:08,030 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 13:33:08,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=268, Invalid=2924, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:33:08,030 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 345 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:08,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2655 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-01-18 13:33:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 13:33:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1139. [2022-01-18 13:33:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4789103690685415) internal successors, (2821), 1138 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2821 transitions. [2022-01-18 13:33:08,040 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2821 transitions. Word has length 79 [2022-01-18 13:33:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:08,040 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2821 transitions. [2022-01-18 13:33:08,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2821 transitions. [2022-01-18 13:33:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:08,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:08,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:08,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-01-18 13:33:08,041 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:08,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:08,041 INFO L85 PathProgramCache]: Analyzing trace with hash -869647894, now seen corresponding path program 323 times [2022-01-18 13:33:08,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:08,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302934455] [2022-01-18 13:33:08,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:08,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:08,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:08,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302934455] [2022-01-18 13:33:08,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302934455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:08,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:08,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:08,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522128711] [2022-01-18 13:33:08,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:08,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:08,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:08,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:08,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:08,303 INFO L87 Difference]: Start difference. First operand 1139 states and 2821 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:10,259 INFO L93 Difference]: Finished difference Result 1373 states and 3385 transitions. [2022-01-18 13:33:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:33:10,259 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:10,261 INFO L225 Difference]: With dead ends: 1373 [2022-01-18 13:33:10,261 INFO L226 Difference]: Without dead ends: 1199 [2022-01-18 13:33:10,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:33:10,261 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 321 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:10,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2550 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:33:10,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-01-18 13:33:10,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1123. [2022-01-18 13:33:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.478609625668449) internal successors, (2781), 1122 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2781 transitions. [2022-01-18 13:33:10,271 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2781 transitions. Word has length 79 [2022-01-18 13:33:10,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:10,277 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2781 transitions. [2022-01-18 13:33:10,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2781 transitions. [2022-01-18 13:33:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:10,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:10,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:10,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-01-18 13:33:10,278 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:10,279 INFO L85 PathProgramCache]: Analyzing trace with hash -427957876, now seen corresponding path program 324 times [2022-01-18 13:33:10,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:10,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342910543] [2022-01-18 13:33:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:10,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:10,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:10,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342910543] [2022-01-18 13:33:10,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342910543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:10,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:10,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:10,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236017263] [2022-01-18 13:33:10,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:10,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:10,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:10,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:10,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:10,539 INFO L87 Difference]: Start difference. First operand 1123 states and 2781 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:12,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:12,591 INFO L93 Difference]: Finished difference Result 1394 states and 3445 transitions. [2022-01-18 13:33:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:33:12,591 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:12,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:12,592 INFO L225 Difference]: With dead ends: 1394 [2022-01-18 13:33:12,593 INFO L226 Difference]: Without dead ends: 1296 [2022-01-18 13:33:12,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=262, Invalid=2708, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:33:12,593 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 305 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:12,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2574 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:33:12,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-01-18 13:33:12,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1135. [2022-01-18 13:33:12,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4814814814814814) internal successors, (2814), 1134 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2814 transitions. [2022-01-18 13:33:12,603 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2814 transitions. Word has length 79 [2022-01-18 13:33:12,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:12,603 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2814 transitions. [2022-01-18 13:33:12,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:12,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2814 transitions. [2022-01-18 13:33:12,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:12,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:12,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:12,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-01-18 13:33:12,604 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:12,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:12,605 INFO L85 PathProgramCache]: Analyzing trace with hash 888575016, now seen corresponding path program 325 times [2022-01-18 13:33:12,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:12,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083150380] [2022-01-18 13:33:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:12,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:12,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:12,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083150380] [2022-01-18 13:33:12,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083150380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:12,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:12,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:12,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872377329] [2022-01-18 13:33:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:12,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:12,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:12,847 INFO L87 Difference]: Start difference. First operand 1135 states and 2814 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:14,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:14,634 INFO L93 Difference]: Finished difference Result 1350 states and 3328 transitions. [2022-01-18 13:33:14,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:33:14,634 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:14,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:14,636 INFO L225 Difference]: With dead ends: 1350 [2022-01-18 13:33:14,636 INFO L226 Difference]: Without dead ends: 1215 [2022-01-18 13:33:14,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=2608, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:33:14,636 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 307 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:14,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2556 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 13:33:14,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-01-18 13:33:14,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1135. [2022-01-18 13:33:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4779541446208113) internal successors, (2810), 1134 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2810 transitions. [2022-01-18 13:33:14,646 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2810 transitions. Word has length 79 [2022-01-18 13:33:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:14,646 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2810 transitions. [2022-01-18 13:33:14,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2810 transitions. [2022-01-18 13:33:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:14,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:14,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:14,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-01-18 13:33:14,647 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash -241940014, now seen corresponding path program 326 times [2022-01-18 13:33:14,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:14,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193295452] [2022-01-18 13:33:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:14,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:14,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:14,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193295452] [2022-01-18 13:33:14,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193295452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:14,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:14,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:33:14,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529602464] [2022-01-18 13:33:14,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:14,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:33:14,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:33:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:33:14,903 INFO L87 Difference]: Start difference. First operand 1135 states and 2810 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:16,179 INFO L93 Difference]: Finished difference Result 1361 states and 3352 transitions. [2022-01-18 13:33:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:33:16,179 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:16,180 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 13:33:16,180 INFO L226 Difference]: Without dead ends: 1199 [2022-01-18 13:33:16,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=213, Invalid=2043, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:33:16,181 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 280 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:16,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2631 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:33:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-01-18 13:33:16,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1131. [2022-01-18 13:33:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.476991150442478) internal successors, (2799), 1130 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2799 transitions. [2022-01-18 13:33:16,190 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2799 transitions. Word has length 79 [2022-01-18 13:33:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:16,190 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2799 transitions. [2022-01-18 13:33:16,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2799 transitions. [2022-01-18 13:33:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:16,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:16,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:16,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-01-18 13:33:16,191 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:16,192 INFO L85 PathProgramCache]: Analyzing trace with hash 150604966, now seen corresponding path program 327 times [2022-01-18 13:33:16,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:16,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112250020] [2022-01-18 13:33:16,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:16,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:16,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:16,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112250020] [2022-01-18 13:33:16,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112250020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:16,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:16,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:33:16,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115589898] [2022-01-18 13:33:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:16,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:33:16,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:33:16,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:33:16,445 INFO L87 Difference]: Start difference. First operand 1131 states and 2799 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:17,817 INFO L93 Difference]: Finished difference Result 1458 states and 3600 transitions. [2022-01-18 13:33:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:33:17,817 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:17,818 INFO L225 Difference]: With dead ends: 1458 [2022-01-18 13:33:17,818 INFO L226 Difference]: Without dead ends: 1206 [2022-01-18 13:33:17,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 13:33:17,819 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 315 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:17,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2626 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:33:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-01-18 13:33:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1139. [2022-01-18 13:33:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4859402460456943) internal successors, (2829), 1138 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2829 transitions. [2022-01-18 13:33:17,828 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2829 transitions. Word has length 79 [2022-01-18 13:33:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:17,828 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2829 transitions. [2022-01-18 13:33:17,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2829 transitions. [2022-01-18 13:33:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:17,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:17,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:17,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-01-18 13:33:17,830 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2056277992, now seen corresponding path program 328 times [2022-01-18 13:33:17,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:17,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986920366] [2022-01-18 13:33:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:17,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:18,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:18,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986920366] [2022-01-18 13:33:18,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986920366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:18,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:18,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:18,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066844507] [2022-01-18 13:33:18,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:18,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:18,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:18,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:18,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:18,072 INFO L87 Difference]: Start difference. First operand 1139 states and 2829 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:20,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:33:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:21,599 INFO L93 Difference]: Finished difference Result 1464 states and 3637 transitions. [2022-01-18 13:33:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:33:21,599 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:21,601 INFO L225 Difference]: With dead ends: 1464 [2022-01-18 13:33:21,601 INFO L226 Difference]: Without dead ends: 1249 [2022-01-18 13:33:21,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:33:21,601 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 359 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:21,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2635 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 13:33:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-01-18 13:33:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1127. [2022-01-18 13:33:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5044404973357017) internal successors, (2820), 1126 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2820 transitions. [2022-01-18 13:33:21,611 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2820 transitions. Word has length 79 [2022-01-18 13:33:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:21,611 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2820 transitions. [2022-01-18 13:33:21,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2820 transitions. [2022-01-18 13:33:21,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:21,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:21,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:21,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-01-18 13:33:21,612 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1480656586, now seen corresponding path program 329 times [2022-01-18 13:33:21,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:21,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704518392] [2022-01-18 13:33:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:21,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:21,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:21,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704518392] [2022-01-18 13:33:21,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704518392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:21,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:21,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:21,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802664638] [2022-01-18 13:33:21,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:21,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:21,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:21,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:21,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:21,866 INFO L87 Difference]: Start difference. First operand 1127 states and 2820 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:23,115 INFO L93 Difference]: Finished difference Result 1401 states and 3503 transitions. [2022-01-18 13:33:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:33:23,115 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:23,116 INFO L225 Difference]: With dead ends: 1401 [2022-01-18 13:33:23,116 INFO L226 Difference]: Without dead ends: 1271 [2022-01-18 13:33:23,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:33:23,117 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 317 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:23,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2343 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:33:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-01-18 13:33:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1171. [2022-01-18 13:33:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 2.506837606837607) internal successors, (2933), 1170 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2933 transitions. [2022-01-18 13:33:23,127 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2933 transitions. Word has length 79 [2022-01-18 13:33:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:23,127 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 2933 transitions. [2022-01-18 13:33:23,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2933 transitions. [2022-01-18 13:33:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:23,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:23,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:23,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-01-18 13:33:23,128 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:23,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash 627265420, now seen corresponding path program 330 times [2022-01-18 13:33:23,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:23,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223684578] [2022-01-18 13:33:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:23,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:23,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:23,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223684578] [2022-01-18 13:33:23,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223684578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:23,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:23,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:23,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875126497] [2022-01-18 13:33:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:23,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:23,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:23,402 INFO L87 Difference]: Start difference. First operand 1171 states and 2933 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:24,630 INFO L93 Difference]: Finished difference Result 1412 states and 3523 transitions. [2022-01-18 13:33:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:33:24,630 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:24,632 INFO L225 Difference]: With dead ends: 1412 [2022-01-18 13:33:24,632 INFO L226 Difference]: Without dead ends: 1314 [2022-01-18 13:33:24,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=271, Invalid=2921, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:33:24,632 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 297 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:24,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2927 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2022-01-18 13:33:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1175. [2022-01-18 13:33:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.504258943781942) internal successors, (2940), 1174 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2940 transitions. [2022-01-18 13:33:24,642 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2940 transitions. Word has length 79 [2022-01-18 13:33:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:24,642 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2940 transitions. [2022-01-18 13:33:24,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2940 transitions. [2022-01-18 13:33:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:24,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:24,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:24,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-01-18 13:33:24,644 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1341502698, now seen corresponding path program 331 times [2022-01-18 13:33:24,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:24,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100234370] [2022-01-18 13:33:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:24,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:24,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:24,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100234370] [2022-01-18 13:33:24,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100234370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:24,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:24,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:24,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374724299] [2022-01-18 13:33:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:24,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:24,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:24,948 INFO L87 Difference]: Start difference. First operand 1175 states and 2940 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:26,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:26,191 INFO L93 Difference]: Finished difference Result 1395 states and 3474 transitions. [2022-01-18 13:33:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:33:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:26,193 INFO L225 Difference]: With dead ends: 1395 [2022-01-18 13:33:26,193 INFO L226 Difference]: Without dead ends: 1282 [2022-01-18 13:33:26,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=2816, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:33:26,193 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 353 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:26,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 2728 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-01-18 13:33:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1163. [2022-01-18 13:33:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.5017211703958693) internal successors, (2907), 1162 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2907 transitions. [2022-01-18 13:33:26,203 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2907 transitions. Word has length 79 [2022-01-18 13:33:26,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:26,203 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2907 transitions. [2022-01-18 13:33:26,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2907 transitions. [2022-01-18 13:33:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:26,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:26,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:26,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-01-18 13:33:26,204 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:26,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1666950924, now seen corresponding path program 332 times [2022-01-18 13:33:26,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:26,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124143744] [2022-01-18 13:33:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:26,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:26,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:26,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124143744] [2022-01-18 13:33:26,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124143744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:26,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:26,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:26,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540148805] [2022-01-18 13:33:26,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:26,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:26,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:26,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:26,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:26,457 INFO L87 Difference]: Start difference. First operand 1163 states and 2907 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:27,677 INFO L93 Difference]: Finished difference Result 1373 states and 3414 transitions. [2022-01-18 13:33:27,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:33:27,677 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:27,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:27,679 INFO L225 Difference]: With dead ends: 1373 [2022-01-18 13:33:27,679 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 13:33:27,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:33:27,679 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 271 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:27,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2468 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:33:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 13:33:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1159. [2022-01-18 13:33:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5008635578583767) internal successors, (2896), 1158 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2896 transitions. [2022-01-18 13:33:27,689 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2896 transitions. Word has length 79 [2022-01-18 13:33:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:27,689 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2896 transitions. [2022-01-18 13:33:27,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:27,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2896 transitions. [2022-01-18 13:33:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:27,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:27,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:27,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-01-18 13:33:27,691 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1766434038, now seen corresponding path program 333 times [2022-01-18 13:33:27,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:27,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664619727] [2022-01-18 13:33:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:27,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:27,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:27,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664619727] [2022-01-18 13:33:27,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664619727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:27,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:27,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:27,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338397060] [2022-01-18 13:33:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:27,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:27,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:27,947 INFO L87 Difference]: Start difference. First operand 1159 states and 2896 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:30,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:33:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:31,011 INFO L93 Difference]: Finished difference Result 1386 states and 3443 transitions. [2022-01-18 13:33:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:33:31,011 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:31,013 INFO L225 Difference]: With dead ends: 1386 [2022-01-18 13:33:31,013 INFO L226 Difference]: Without dead ends: 1288 [2022-01-18 13:33:31,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=2324, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:33:31,014 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 313 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:31,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2408 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 975 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:33:31,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-01-18 13:33:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1183. [2022-01-18 13:33:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.499153976311337) internal successors, (2954), 1182 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:31,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2954 transitions. [2022-01-18 13:33:31,026 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2954 transitions. Word has length 79 [2022-01-18 13:33:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:31,026 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2954 transitions. [2022-01-18 13:33:31,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2954 transitions. [2022-01-18 13:33:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:31,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:31,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:31,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-01-18 13:33:31,027 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:31,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:31,027 INFO L85 PathProgramCache]: Analyzing trace with hash -449901146, now seen corresponding path program 334 times [2022-01-18 13:33:31,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:31,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489509929] [2022-01-18 13:33:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:31,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:31,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:31,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489509929] [2022-01-18 13:33:31,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489509929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:31,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:31,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:31,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045446919] [2022-01-18 13:33:31,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:31,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:31,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:31,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:31,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:31,280 INFO L87 Difference]: Start difference. First operand 1183 states and 2954 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:33,443 INFO L93 Difference]: Finished difference Result 1369 states and 3390 transitions. [2022-01-18 13:33:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:33:33,444 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:33,445 INFO L225 Difference]: With dead ends: 1369 [2022-01-18 13:33:33,445 INFO L226 Difference]: Without dead ends: 1210 [2022-01-18 13:33:33,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:33:33,445 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 299 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:33,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2382 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 13:33:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-01-18 13:33:33,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1135. [2022-01-18 13:33:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4991181657848323) internal successors, (2834), 1134 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2834 transitions. [2022-01-18 13:33:33,455 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2834 transitions. Word has length 79 [2022-01-18 13:33:33,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:33,455 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2834 transitions. [2022-01-18 13:33:33,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2834 transitions. [2022-01-18 13:33:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:33,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:33,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:33,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-01-18 13:33:33,456 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2134116460, now seen corresponding path program 335 times [2022-01-18 13:33:33,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:33,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801600679] [2022-01-18 13:33:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:33,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:33,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:33,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801600679] [2022-01-18 13:33:33,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801600679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:33,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:33,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:33,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334309465] [2022-01-18 13:33:33,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:33,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:33,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:33,727 INFO L87 Difference]: Start difference. First operand 1135 states and 2834 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:34,695 INFO L93 Difference]: Finished difference Result 1361 states and 3385 transitions. [2022-01-18 13:33:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:33:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:34,697 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 13:33:34,697 INFO L226 Difference]: Without dead ends: 1231 [2022-01-18 13:33:34,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=2320, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:33:34,697 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 283 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:34,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2269 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:33:34,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-01-18 13:33:34,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1151. [2022-01-18 13:33:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4956521739130433) internal successors, (2870), 1150 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2870 transitions. [2022-01-18 13:33:34,707 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2870 transitions. Word has length 79 [2022-01-18 13:33:34,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:34,707 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2870 transitions. [2022-01-18 13:33:34,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2870 transitions. [2022-01-18 13:33:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:34,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:34,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:34,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-01-18 13:33:34,708 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:34,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:34,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1280725294, now seen corresponding path program 336 times [2022-01-18 13:33:34,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:34,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335191315] [2022-01-18 13:33:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:34,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:34,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:34,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335191315] [2022-01-18 13:33:34,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335191315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:34,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:34,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:34,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671904038] [2022-01-18 13:33:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:34,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:34,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:34,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:34,986 INFO L87 Difference]: Start difference. First operand 1151 states and 2870 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:36,107 INFO L93 Difference]: Finished difference Result 1352 states and 3354 transitions. [2022-01-18 13:33:36,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:33:36,108 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:36,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:36,109 INFO L225 Difference]: With dead ends: 1352 [2022-01-18 13:33:36,109 INFO L226 Difference]: Without dead ends: 1254 [2022-01-18 13:33:36,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=255, Invalid=2715, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:33:36,109 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 307 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:36,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2614 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-01-18 13:33:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1155. [2022-01-18 13:33:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.4930675909878683) internal successors, (2877), 1154 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2877 transitions. [2022-01-18 13:33:36,119 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2877 transitions. Word has length 79 [2022-01-18 13:33:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:36,119 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2877 transitions. [2022-01-18 13:33:36,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2877 transitions. [2022-01-18 13:33:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:36,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:36,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:36,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-01-18 13:33:36,121 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:36,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1994962572, now seen corresponding path program 337 times [2022-01-18 13:33:36,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:36,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611248153] [2022-01-18 13:33:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:36,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:36,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:36,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611248153] [2022-01-18 13:33:36,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611248153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:36,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:36,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:36,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749862385] [2022-01-18 13:33:36,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:36,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:36,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:36,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:36,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:36,391 INFO L87 Difference]: Start difference. First operand 1155 states and 2877 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:38,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:33:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:39,581 INFO L93 Difference]: Finished difference Result 1335 states and 3305 transitions. [2022-01-18 13:33:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:33:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:39,583 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 13:33:39,583 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 13:33:39,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=2613, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:33:39,583 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 334 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:39,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2532 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:33:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 13:33:39,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1143. [2022-01-18 13:33:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.497373029772329) internal successors, (2852), 1142 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2852 transitions. [2022-01-18 13:33:39,593 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2852 transitions. Word has length 79 [2022-01-18 13:33:39,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:39,593 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2852 transitions. [2022-01-18 13:33:39,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2852 transitions. [2022-01-18 13:33:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:39,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:39,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:39,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-01-18 13:33:39,595 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1974556498, now seen corresponding path program 338 times [2022-01-18 13:33:39,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:39,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555838361] [2022-01-18 13:33:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:39,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:39,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:39,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555838361] [2022-01-18 13:33:39,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555838361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:39,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:39,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:39,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223262578] [2022-01-18 13:33:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:39,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:39,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:39,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:39,851 INFO L87 Difference]: Start difference. First operand 1143 states and 2852 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:42,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:33:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:42,866 INFO L93 Difference]: Finished difference Result 1341 states and 3326 transitions. [2022-01-18 13:33:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:33:42,866 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:42,867 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 13:33:42,867 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:33:42,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:33:42,868 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 286 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:42,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2393 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 905 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:33:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:33:42,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1139. [2022-01-18 13:33:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4964850615114234) internal successors, (2841), 1138 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2841 transitions. [2022-01-18 13:33:42,877 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2841 transitions. Word has length 79 [2022-01-18 13:33:42,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:42,877 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2841 transitions. [2022-01-18 13:33:42,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2841 transitions. [2022-01-18 13:33:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:42,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:42,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:42,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-01-18 13:33:42,879 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:42,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1613829834, now seen corresponding path program 339 times [2022-01-18 13:33:42,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:42,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783844286] [2022-01-18 13:33:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:42,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:43,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:43,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783844286] [2022-01-18 13:33:43,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783844286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:43,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:43,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:43,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35864748] [2022-01-18 13:33:43,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:43,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:43,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:43,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:43,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:43,138 INFO L87 Difference]: Start difference. First operand 1139 states and 2841 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:44,555 INFO L93 Difference]: Finished difference Result 1353 states and 3351 transitions. [2022-01-18 13:33:44,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 13:33:44,556 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:44,557 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:33:44,557 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 13:33:44,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1963, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:33:44,558 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 243 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:44,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 2635 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:33:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 13:33:44,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1127. [2022-01-18 13:33:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5008880994671405) internal successors, (2816), 1126 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-01-18 13:33:44,567 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-01-18 13:33:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:44,568 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-01-18 13:33:44,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:44,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-01-18 13:33:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:44,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:44,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:44,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-01-18 13:33:44,569 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash 147984844, now seen corresponding path program 340 times [2022-01-18 13:33:44,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:44,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821922889] [2022-01-18 13:33:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:44,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:44,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:44,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821922889] [2022-01-18 13:33:44,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821922889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:44,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:44,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:44,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615355958] [2022-01-18 13:33:44,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:44,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:44,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:44,847 INFO L87 Difference]: Start difference. First operand 1127 states and 2816 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:46,004 INFO L93 Difference]: Finished difference Result 1369 states and 3411 transitions. [2022-01-18 13:33:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:33:46,004 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:46,006 INFO L225 Difference]: With dead ends: 1369 [2022-01-18 13:33:46,006 INFO L226 Difference]: Without dead ends: 1239 [2022-01-18 13:33:46,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:33:46,007 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 303 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:46,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2854 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:33:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-01-18 13:33:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1139. [2022-01-18 13:33:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4964850615114234) internal successors, (2841), 1138 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2841 transitions. [2022-01-18 13:33:46,016 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2841 transitions. Word has length 79 [2022-01-18 13:33:46,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:46,016 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2841 transitions. [2022-01-18 13:33:46,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2841 transitions. [2022-01-18 13:33:46,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:46,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:46,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:46,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-01-18 13:33:46,018 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash -705406322, now seen corresponding path program 341 times [2022-01-18 13:33:46,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:46,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942906384] [2022-01-18 13:33:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:46,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:46,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:46,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942906384] [2022-01-18 13:33:46,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942906384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:46,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:46,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:46,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569594238] [2022-01-18 13:33:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:46,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:46,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:46,304 INFO L87 Difference]: Start difference. First operand 1139 states and 2841 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:47,483 INFO L93 Difference]: Finished difference Result 1356 states and 3369 transitions. [2022-01-18 13:33:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:33:47,484 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:47,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:47,485 INFO L225 Difference]: With dead ends: 1356 [2022-01-18 13:33:47,485 INFO L226 Difference]: Without dead ends: 1258 [2022-01-18 13:33:47,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:33:47,486 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 307 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:47,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2639 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-01-18 13:33:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1143. [2022-01-18 13:33:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4938704028021017) internal successors, (2848), 1142 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2848 transitions. [2022-01-18 13:33:47,496 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2848 transitions. Word has length 79 [2022-01-18 13:33:47,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:47,496 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2848 transitions. [2022-01-18 13:33:47,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2848 transitions. [2022-01-18 13:33:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:47,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:47,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:47,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-01-18 13:33:47,498 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 8830956, now seen corresponding path program 342 times [2022-01-18 13:33:47,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:47,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375457384] [2022-01-18 13:33:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:47,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:47,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:47,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375457384] [2022-01-18 13:33:47,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375457384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:47,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:47,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:47,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528206737] [2022-01-18 13:33:47,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:47,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:47,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:47,793 INFO L87 Difference]: Start difference. First operand 1143 states and 2848 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:49,149 INFO L93 Difference]: Finished difference Result 1339 states and 3320 transitions. [2022-01-18 13:33:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:33:49,149 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:49,151 INFO L225 Difference]: With dead ends: 1339 [2022-01-18 13:33:49,151 INFO L226 Difference]: Without dead ends: 1226 [2022-01-18 13:33:49,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:33:49,152 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 334 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:49,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2772 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:33:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-01-18 13:33:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1131. [2022-01-18 13:33:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4911504424778763) internal successors, (2815), 1130 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2815 transitions. [2022-01-18 13:33:49,163 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2815 transitions. Word has length 79 [2022-01-18 13:33:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:49,163 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2815 transitions. [2022-01-18 13:33:49,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2815 transitions. [2022-01-18 13:33:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:49,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:49,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:49,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-01-18 13:33:49,164 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:49,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash 334279182, now seen corresponding path program 343 times [2022-01-18 13:33:49,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:49,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066644330] [2022-01-18 13:33:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:49,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:49,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:49,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066644330] [2022-01-18 13:33:49,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066644330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:49,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:49,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:33:49,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242718951] [2022-01-18 13:33:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:49,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:33:49,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:33:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:33:49,471 INFO L87 Difference]: Start difference. First operand 1131 states and 2815 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:50,569 INFO L93 Difference]: Finished difference Result 1353 states and 3351 transitions. [2022-01-18 13:33:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:33:50,569 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:50,571 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 13:33:50,571 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 13:33:50,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=251, Invalid=2719, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:33:50,571 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 311 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:50,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2676 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:33:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 13:33:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1127. [2022-01-18 13:33:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4902309058614565) internal successors, (2804), 1126 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2804 transitions. [2022-01-18 13:33:50,581 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2804 transitions. Word has length 79 [2022-01-18 13:33:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:50,581 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2804 transitions. [2022-01-18 13:33:50,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2804 transitions. [2022-01-18 13:33:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:50,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:50,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:50,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-01-18 13:33:50,582 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:50,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1195861516, now seen corresponding path program 344 times [2022-01-18 13:33:50,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:50,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017147299] [2022-01-18 13:33:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:50,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:50,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:50,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017147299] [2022-01-18 13:33:50,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017147299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:50,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:50,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:50,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891569606] [2022-01-18 13:33:50,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:50,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:50,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:50,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:50,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:50,848 INFO L87 Difference]: Start difference. First operand 1127 states and 2804 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:52,287 INFO L93 Difference]: Finished difference Result 1277 states and 3158 transitions. [2022-01-18 13:33:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:33:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:52,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:52,288 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 13:33:52,288 INFO L226 Difference]: Without dead ends: 1143 [2022-01-18 13:33:52,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:33:52,289 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 269 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:52,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2378 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 13:33:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-01-18 13:33:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1091. [2022-01-18 13:33:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.5) internal successors, (2725), 1090 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2725 transitions. [2022-01-18 13:33:52,298 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2725 transitions. Word has length 79 [2022-01-18 13:33:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:52,298 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2725 transitions. [2022-01-18 13:33:52,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2725 transitions. [2022-01-18 13:33:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:52,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:52,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:52,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-01-18 13:33:52,299 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:52,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:52,299 INFO L85 PathProgramCache]: Analyzing trace with hash -448915766, now seen corresponding path program 345 times [2022-01-18 13:33:52,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:52,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018248366] [2022-01-18 13:33:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:52,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:52,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:52,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018248366] [2022-01-18 13:33:52,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018248366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:52,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:52,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:52,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943948432] [2022-01-18 13:33:52,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:52,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:52,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:52,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:52,572 INFO L87 Difference]: Start difference. First operand 1091 states and 2725 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:53,639 INFO L93 Difference]: Finished difference Result 1321 states and 3287 transitions. [2022-01-18 13:33:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:33:53,640 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:53,641 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 13:33:53,641 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:33:53,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:33:53,641 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 307 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:53,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2342 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:53,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:33:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1123. [2022-01-18 13:33:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.5) internal successors, (2805), 1122 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2805 transitions. [2022-01-18 13:33:53,651 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2805 transitions. Word has length 79 [2022-01-18 13:33:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:53,651 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2805 transitions. [2022-01-18 13:33:53,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2805 transitions. [2022-01-18 13:33:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:53,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:53,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:53,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-01-18 13:33:53,652 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1302306932, now seen corresponding path program 346 times [2022-01-18 13:33:53,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:53,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724944060] [2022-01-18 13:33:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:53,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:53,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:53,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724944060] [2022-01-18 13:33:53,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724944060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:53,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:53,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:53,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528221687] [2022-01-18 13:33:53,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:53,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:53,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:53,911 INFO L87 Difference]: Start difference. First operand 1123 states and 2805 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:56,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:33:57,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:57,129 INFO L93 Difference]: Finished difference Result 1308 states and 3245 transitions. [2022-01-18 13:33:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:33:57,129 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:57,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:57,131 INFO L225 Difference]: With dead ends: 1308 [2022-01-18 13:33:57,131 INFO L226 Difference]: Without dead ends: 1210 [2022-01-18 13:33:57,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=2310, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:33:57,132 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 300 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:57,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2577 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 13:33:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-01-18 13:33:57,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1127. [2022-01-18 13:33:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.497335701598579) internal successors, (2812), 1126 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2812 transitions. [2022-01-18 13:33:57,141 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2812 transitions. Word has length 79 [2022-01-18 13:33:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:57,141 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2812 transitions. [2022-01-18 13:33:57,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2812 transitions. [2022-01-18 13:33:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:57,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:57,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:57,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-01-18 13:33:57,143 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash -588069654, now seen corresponding path program 347 times [2022-01-18 13:33:57,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:57,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775886564] [2022-01-18 13:33:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:57,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:57,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:57,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775886564] [2022-01-18 13:33:57,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775886564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:57,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:57,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:57,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343614801] [2022-01-18 13:33:57,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:57,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:57,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:57,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:57,404 INFO L87 Difference]: Start difference. First operand 1127 states and 2812 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:58,428 INFO L93 Difference]: Finished difference Result 1276 states and 3161 transitions. [2022-01-18 13:33:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:33:58,428 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:58,429 INFO L225 Difference]: With dead ends: 1276 [2022-01-18 13:33:58,429 INFO L226 Difference]: Without dead ends: 1163 [2022-01-18 13:33:58,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:33:58,430 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 300 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:58,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2387 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:33:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-01-18 13:33:58,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1115. [2022-01-18 13:33:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4982046678635546) internal successors, (2783), 1114 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2783 transitions. [2022-01-18 13:33:58,439 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2783 transitions. Word has length 79 [2022-01-18 13:33:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:58,439 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2783 transitions. [2022-01-18 13:33:58,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2783 transitions. [2022-01-18 13:33:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:58,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:58,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:58,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-01-18 13:33:58,441 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:58,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:58,441 INFO L85 PathProgramCache]: Analyzing trace with hash -29111062, now seen corresponding path program 348 times [2022-01-18 13:33:58,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:58,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550328837] [2022-01-18 13:33:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:58,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:33:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:33:58,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:33:58,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550328837] [2022-01-18 13:33:58,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550328837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:33:58,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:33:58,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:33:58,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013136593] [2022-01-18 13:33:58,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:33:58,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:33:58,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:33:58,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:33:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:33:58,715 INFO L87 Difference]: Start difference. First operand 1115 states and 2783 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:33:59,812 INFO L93 Difference]: Finished difference Result 1326 states and 3286 transitions. [2022-01-18 13:33:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:33:59,813 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:33:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:33:59,814 INFO L225 Difference]: With dead ends: 1326 [2022-01-18 13:33:59,814 INFO L226 Difference]: Without dead ends: 1228 [2022-01-18 13:33:59,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:33:59,815 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 270 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:33:59,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2722 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:33:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-01-18 13:33:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1139. [2022-01-18 13:33:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.4964850615114234) internal successors, (2841), 1138 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2841 transitions. [2022-01-18 13:33:59,825 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2841 transitions. Word has length 79 [2022-01-18 13:33:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:33:59,825 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2841 transitions. [2022-01-18 13:33:59,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:33:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2841 transitions. [2022-01-18 13:33:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:33:59,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:33:59,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:33:59,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-01-18 13:33:59,826 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:33:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:33:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1287421830, now seen corresponding path program 349 times [2022-01-18 13:33:59,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:33:59,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400354521] [2022-01-18 13:33:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:33:59,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:33:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:00,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:00,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400354521] [2022-01-18 13:34:00,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400354521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:00,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:00,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:00,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678915834] [2022-01-18 13:34:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:00,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:00,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:00,068 INFO L87 Difference]: Start difference. First operand 1139 states and 2841 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:02,072 INFO L93 Difference]: Finished difference Result 1294 states and 3198 transitions. [2022-01-18 13:34:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:34:02,073 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:02,074 INFO L225 Difference]: With dead ends: 1294 [2022-01-18 13:34:02,074 INFO L226 Difference]: Without dead ends: 1143 [2022-01-18 13:34:02,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:34:02,074 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 315 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:02,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2483 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:34:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-01-18 13:34:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1099. [2022-01-18 13:34:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4945355191256833) internal successors, (2739), 1098 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2739 transitions. [2022-01-18 13:34:02,084 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2739 transitions. Word has length 79 [2022-01-18 13:34:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:02,084 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2739 transitions. [2022-01-18 13:34:02,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2739 transitions. [2022-01-18 13:34:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:02,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:02,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:02,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-01-18 13:34:02,085 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2141512938, now seen corresponding path program 350 times [2022-01-18 13:34:02,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:02,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510216631] [2022-01-18 13:34:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:02,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:02,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:02,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510216631] [2022-01-18 13:34:02,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510216631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:02,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:02,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:02,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875818308] [2022-01-18 13:34:02,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:02,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:02,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:02,380 INFO L87 Difference]: Start difference. First operand 1099 states and 2739 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:03,783 INFO L93 Difference]: Finished difference Result 1330 states and 3293 transitions. [2022-01-18 13:34:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:34:03,783 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:03,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:03,784 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 13:34:03,785 INFO L226 Difference]: Without dead ends: 1232 [2022-01-18 13:34:03,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=2707, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:34:03,785 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 294 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:03,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2658 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:34:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-01-18 13:34:03,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1127. [2022-01-18 13:34:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4937833037300177) internal successors, (2808), 1126 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2808 transitions. [2022-01-18 13:34:03,795 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2808 transitions. Word has length 79 [2022-01-18 13:34:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:03,795 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2808 transitions. [2022-01-18 13:34:03,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:03,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2808 transitions. [2022-01-18 13:34:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:03,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:03,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:03,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-01-18 13:34:03,796 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:03,796 INFO L85 PathProgramCache]: Analyzing trace with hash -836921466, now seen corresponding path program 351 times [2022-01-18 13:34:03,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:03,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369700068] [2022-01-18 13:34:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:03,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:04,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:04,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369700068] [2022-01-18 13:34:04,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369700068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:04,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:04,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:04,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790488771] [2022-01-18 13:34:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:04,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:04,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:04,065 INFO L87 Difference]: Start difference. First operand 1127 states and 2808 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:05,145 INFO L93 Difference]: Finished difference Result 1286 states and 3176 transitions. [2022-01-18 13:34:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:34:05,145 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:05,147 INFO L225 Difference]: With dead ends: 1286 [2022-01-18 13:34:05,147 INFO L226 Difference]: Without dead ends: 1151 [2022-01-18 13:34:05,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=2607, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:34:05,147 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 275 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:05,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2841 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:34:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-01-18 13:34:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1103. [2022-01-18 13:34:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.4918330308529946) internal successors, (2746), 1102 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2746 transitions. [2022-01-18 13:34:05,156 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2746 transitions. Word has length 79 [2022-01-18 13:34:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:05,156 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2746 transitions. [2022-01-18 13:34:05,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2746 transitions. [2022-01-18 13:34:05,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:05,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:05,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:05,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-01-18 13:34:05,158 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:05,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1967436496, now seen corresponding path program 352 times [2022-01-18 13:34:05,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:05,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675134576] [2022-01-18 13:34:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:05,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:05,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:05,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675134576] [2022-01-18 13:34:05,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675134576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:05,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:05,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:05,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105638983] [2022-01-18 13:34:05,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:05,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:05,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:05,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:05,423 INFO L87 Difference]: Start difference. First operand 1103 states and 2746 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:06,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:06,313 INFO L93 Difference]: Finished difference Result 1289 states and 3178 transitions. [2022-01-18 13:34:06,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:34:06,314 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:06,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:06,315 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 13:34:06,315 INFO L226 Difference]: Without dead ends: 1111 [2022-01-18 13:34:06,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:34:06,316 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 278 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:06,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 2481 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 13:34:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-01-18 13:34:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1083. [2022-01-18 13:34:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.5018484288354896) internal successors, (2707), 1082 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2707 transitions. [2022-01-18 13:34:06,325 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2707 transitions. Word has length 79 [2022-01-18 13:34:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:06,325 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2707 transitions. [2022-01-18 13:34:06,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2707 transitions. [2022-01-18 13:34:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:06,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:06,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:06,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-01-18 13:34:06,327 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:06,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:06,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1103048232, now seen corresponding path program 353 times [2022-01-18 13:34:06,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:06,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83755636] [2022-01-18 13:34:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:06,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:06,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:06,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83755636] [2022-01-18 13:34:06,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83755636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:06,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:06,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:06,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215057627] [2022-01-18 13:34:06,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:06,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:06,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:06,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:06,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:06,607 INFO L87 Difference]: Start difference. First operand 1083 states and 2707 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:07,778 INFO L93 Difference]: Finished difference Result 1365 states and 3412 transitions. [2022-01-18 13:34:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:34:07,778 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:07,779 INFO L225 Difference]: With dead ends: 1365 [2022-01-18 13:34:07,779 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 13:34:07,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:34:07,780 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 329 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:07,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2722 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:07,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 13:34:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1143. [2022-01-18 13:34:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.507880910683012) internal successors, (2864), 1142 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2864 transitions. [2022-01-18 13:34:07,789 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2864 transitions. Word has length 79 [2022-01-18 13:34:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:07,789 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2864 transitions. [2022-01-18 13:34:07,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2864 transitions. [2022-01-18 13:34:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:07,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:07,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:07,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-01-18 13:34:07,791 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:07,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash 249657066, now seen corresponding path program 354 times [2022-01-18 13:34:07,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:07,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624848835] [2022-01-18 13:34:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:07,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:08,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:08,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624848835] [2022-01-18 13:34:08,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624848835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:08,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:08,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:08,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984182720] [2022-01-18 13:34:08,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:08,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:08,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:08,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:08,069 INFO L87 Difference]: Start difference. First operand 1143 states and 2864 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:10,222 INFO L93 Difference]: Finished difference Result 1364 states and 3403 transitions. [2022-01-18 13:34:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:34:10,222 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:10,223 INFO L225 Difference]: With dead ends: 1364 [2022-01-18 13:34:10,223 INFO L226 Difference]: Without dead ends: 1266 [2022-01-18 13:34:10,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:34:10,224 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 339 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:10,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2827 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:34:10,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-01-18 13:34:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1147. [2022-01-18 13:34:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.505235602094241) internal successors, (2871), 1146 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2871 transitions. [2022-01-18 13:34:10,234 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2871 transitions. Word has length 79 [2022-01-18 13:34:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:10,234 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2871 transitions. [2022-01-18 13:34:10,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2871 transitions. [2022-01-18 13:34:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:10,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:10,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:10,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-01-18 13:34:10,235 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:10,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:10,235 INFO L85 PathProgramCache]: Analyzing trace with hash 963894344, now seen corresponding path program 355 times [2022-01-18 13:34:10,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:10,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143732580] [2022-01-18 13:34:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:10,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:10,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:10,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143732580] [2022-01-18 13:34:10,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143732580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:10,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:10,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:10,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448139455] [2022-01-18 13:34:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:10,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:10,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:10,504 INFO L87 Difference]: Start difference. First operand 1147 states and 2871 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:11,820 INFO L93 Difference]: Finished difference Result 1347 states and 3354 transitions. [2022-01-18 13:34:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:34:11,820 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:11,821 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 13:34:11,821 INFO L226 Difference]: Without dead ends: 1234 [2022-01-18 13:34:11,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:34:11,822 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 364 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:11,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 2744 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:34:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-18 13:34:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1135. [2022-01-18 13:34:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.502645502645503) internal successors, (2838), 1134 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2838 transitions. [2022-01-18 13:34:11,831 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2838 transitions. Word has length 79 [2022-01-18 13:34:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:11,831 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2838 transitions. [2022-01-18 13:34:11,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2838 transitions. [2022-01-18 13:34:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:11,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:11,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:11,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2022-01-18 13:34:11,832 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:11,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1289342570, now seen corresponding path program 356 times [2022-01-18 13:34:11,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:11,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404962281] [2022-01-18 13:34:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:11,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:12,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:12,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404962281] [2022-01-18 13:34:12,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404962281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:12,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:12,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:12,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280597252] [2022-01-18 13:34:12,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:12,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:12,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:12,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:12,107 INFO L87 Difference]: Start difference. First operand 1135 states and 2838 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:13,206 INFO L93 Difference]: Finished difference Result 1341 states and 3334 transitions. [2022-01-18 13:34:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:34:13,207 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:13,208 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 13:34:13,208 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:34:13,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=2612, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:34:13,209 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 279 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:13,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2957 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:34:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1131. [2022-01-18 13:34:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.5017699115044247) internal successors, (2827), 1130 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2827 transitions. [2022-01-18 13:34:13,218 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2827 transitions. Word has length 79 [2022-01-18 13:34:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:13,219 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2827 transitions. [2022-01-18 13:34:13,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2827 transitions. [2022-01-18 13:34:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:13,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:13,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:13,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2022-01-18 13:34:13,220 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:13,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:13,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2144042392, now seen corresponding path program 357 times [2022-01-18 13:34:13,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:13,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996471858] [2022-01-18 13:34:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:13,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:13,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:13,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996471858] [2022-01-18 13:34:13,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996471858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:13,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:13,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:13,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082077174] [2022-01-18 13:34:13,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:13,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:13,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:13,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:13,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:13,521 INFO L87 Difference]: Start difference. First operand 1131 states and 2827 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:15,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:34:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:17,077 INFO L93 Difference]: Finished difference Result 1346 states and 3341 transitions. [2022-01-18 13:34:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:34:17,078 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:17,079 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 13:34:17,079 INFO L226 Difference]: Without dead ends: 1248 [2022-01-18 13:34:17,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:34:17,080 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 291 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:17,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2629 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 13:34:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-01-18 13:34:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1155. [2022-01-18 13:34:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5) internal successors, (2885), 1154 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-01-18 13:34:17,089 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-01-18 13:34:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:17,089 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-01-18 13:34:17,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-01-18 13:34:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:17,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:17,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:17,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2022-01-18 13:34:17,091 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:17,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:17,091 INFO L85 PathProgramCache]: Analyzing trace with hash -827509500, now seen corresponding path program 358 times [2022-01-18 13:34:17,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:17,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425999013] [2022-01-18 13:34:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:17,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:17,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:17,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425999013] [2022-01-18 13:34:17,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425999013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:17,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:17,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:17,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559562495] [2022-01-18 13:34:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:17,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:17,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:17,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:17,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:17,354 INFO L87 Difference]: Start difference. First operand 1155 states and 2885 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:18,727 INFO L93 Difference]: Finished difference Result 1314 states and 3253 transitions. [2022-01-18 13:34:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 13:34:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:18,729 INFO L225 Difference]: With dead ends: 1314 [2022-01-18 13:34:18,729 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 13:34:18,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:34:18,729 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 314 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:18,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2473 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:34:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 13:34:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1107. [2022-01-18 13:34:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.5) internal successors, (2765), 1106 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2765 transitions. [2022-01-18 13:34:18,738 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2765 transitions. Word has length 79 [2022-01-18 13:34:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:18,739 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2765 transitions. [2022-01-18 13:34:18,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2765 transitions. [2022-01-18 13:34:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:18,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:18,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:18,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-01-18 13:34:18,740 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:18,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1444658794, now seen corresponding path program 359 times [2022-01-18 13:34:18,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:18,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951095583] [2022-01-18 13:34:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:18,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:19,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:19,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951095583] [2022-01-18 13:34:19,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951095583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:19,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:19,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:19,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396268096] [2022-01-18 13:34:19,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:19,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:19,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:19,002 INFO L87 Difference]: Start difference. First operand 1107 states and 2765 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:20,199 INFO L93 Difference]: Finished difference Result 1309 states and 3254 transitions. [2022-01-18 13:34:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:34:20,199 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:20,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:20,201 INFO L225 Difference]: With dead ends: 1309 [2022-01-18 13:34:20,201 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 13:34:20,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:34:20,201 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 277 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:20,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2425 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:34:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 13:34:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1131. [2022-01-18 13:34:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.5017699115044247) internal successors, (2827), 1130 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2827 transitions. [2022-01-18 13:34:20,211 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2827 transitions. Word has length 79 [2022-01-18 13:34:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:20,212 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2827 transitions. [2022-01-18 13:34:20,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2827 transitions. [2022-01-18 13:34:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:20,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:20,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:20,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-01-18 13:34:20,213 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:20,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1077764364, now seen corresponding path program 360 times [2022-01-18 13:34:20,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:20,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766707205] [2022-01-18 13:34:20,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:20,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:20,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:20,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766707205] [2022-01-18 13:34:20,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766707205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:20,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:20,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:20,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476438158] [2022-01-18 13:34:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:20,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:20,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:20,483 INFO L87 Difference]: Start difference. First operand 1131 states and 2827 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:22,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:22,476 INFO L93 Difference]: Finished difference Result 1320 states and 3278 transitions. [2022-01-18 13:34:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:34:22,476 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:22,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:22,478 INFO L225 Difference]: With dead ends: 1320 [2022-01-18 13:34:22,478 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 13:34:22,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:34:22,478 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 309 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:22,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2397 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:34:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 13:34:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1135. [2022-01-18 13:34:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4991181657848323) internal successors, (2834), 1134 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2834 transitions. [2022-01-18 13:34:22,488 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2834 transitions. Word has length 79 [2022-01-18 13:34:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:22,488 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2834 transitions. [2022-01-18 13:34:22,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2834 transitions. [2022-01-18 13:34:22,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:22,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:22,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:22,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2022-01-18 13:34:22,489 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1792001642, now seen corresponding path program 361 times [2022-01-18 13:34:22,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:22,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345083691] [2022-01-18 13:34:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:22,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:22,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:22,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345083691] [2022-01-18 13:34:22,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345083691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:22,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:22,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:22,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861123280] [2022-01-18 13:34:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:22,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:22,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:22,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:22,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:22,748 INFO L87 Difference]: Start difference. First operand 1135 states and 2834 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:23,763 INFO L93 Difference]: Finished difference Result 1288 states and 3194 transitions. [2022-01-18 13:34:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:34:23,763 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:23,764 INFO L225 Difference]: With dead ends: 1288 [2022-01-18 13:34:23,764 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 13:34:23,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:34:23,765 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 277 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:23,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2623 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:34:23,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 13:34:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1127. [2022-01-18 13:34:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5008880994671405) internal successors, (2816), 1126 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-01-18 13:34:23,774 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-01-18 13:34:23,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:23,774 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-01-18 13:34:23,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-01-18 13:34:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:23,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:23,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:23,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2022-01-18 13:34:23,775 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:23,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2032274840, now seen corresponding path program 362 times [2022-01-18 13:34:23,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:23,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143455481] [2022-01-18 13:34:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:23,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:24,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:24,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143455481] [2022-01-18 13:34:24,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143455481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:24,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:24,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:24,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904815692] [2022-01-18 13:34:24,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:24,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:24,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:24,039 INFO L87 Difference]: Start difference. First operand 1127 states and 2816 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:25,151 INFO L93 Difference]: Finished difference Result 1342 states and 3330 transitions. [2022-01-18 13:34:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:34:25,151 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:25,153 INFO L225 Difference]: With dead ends: 1342 [2022-01-18 13:34:25,153 INFO L226 Difference]: Without dead ends: 1244 [2022-01-18 13:34:25,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:34:25,153 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 267 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:25,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2668 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2022-01-18 13:34:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1151. [2022-01-18 13:34:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4991304347826087) internal successors, (2874), 1150 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2874 transitions. [2022-01-18 13:34:25,163 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2874 transitions. Word has length 79 [2022-01-18 13:34:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:25,163 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2874 transitions. [2022-01-18 13:34:25,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:25,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2874 transitions. [2022-01-18 13:34:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:25,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:25,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:25,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2022-01-18 13:34:25,164 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash -715741948, now seen corresponding path program 363 times [2022-01-18 13:34:25,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:25,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867882766] [2022-01-18 13:34:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:25,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:25,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:25,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867882766] [2022-01-18 13:34:25,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867882766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:25,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:25,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:25,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969379309] [2022-01-18 13:34:25,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:25,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:25,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:25,405 INFO L87 Difference]: Start difference. First operand 1151 states and 2874 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:26,427 INFO L93 Difference]: Finished difference Result 1310 states and 3242 transitions. [2022-01-18 13:34:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:34:26,427 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:26,428 INFO L225 Difference]: With dead ends: 1310 [2022-01-18 13:34:26,428 INFO L226 Difference]: Without dead ends: 1167 [2022-01-18 13:34:26,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:34:26,429 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 266 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:26,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2745 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:34:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-01-18 13:34:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1119. [2022-01-18 13:34:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.4991055456171734) internal successors, (2794), 1118 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2794 transitions. [2022-01-18 13:34:26,438 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2794 transitions. Word has length 79 [2022-01-18 13:34:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:26,438 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2794 transitions. [2022-01-18 13:34:26,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:26,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2794 transitions. [2022-01-18 13:34:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:26,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:26,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:26,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2022-01-18 13:34:26,440 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1198390970, now seen corresponding path program 364 times [2022-01-18 13:34:26,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:26,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740225983] [2022-01-18 13:34:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:26,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:26,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:26,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740225983] [2022-01-18 13:34:26,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740225983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:26,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:26,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:26,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313981924] [2022-01-18 13:34:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:26,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:26,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:26,713 INFO L87 Difference]: Start difference. First operand 1119 states and 2794 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:28,848 INFO L93 Difference]: Finished difference Result 1370 states and 3403 transitions. [2022-01-18 13:34:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:34:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:28,850 INFO L225 Difference]: With dead ends: 1370 [2022-01-18 13:34:28,850 INFO L226 Difference]: Without dead ends: 1272 [2022-01-18 13:34:28,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:34:28,850 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 312 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:28,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2855 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 13:34:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-01-18 13:34:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1147. [2022-01-18 13:34:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.4982547993019195) internal successors, (2863), 1146 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2863 transitions. [2022-01-18 13:34:28,860 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2863 transitions. Word has length 79 [2022-01-18 13:34:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:28,860 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2863 transitions. [2022-01-18 13:34:28,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2863 transitions. [2022-01-18 13:34:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:28,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:28,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:28,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-01-18 13:34:28,861 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:28,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:28,862 INFO L85 PathProgramCache]: Analyzing trace with hash 118141922, now seen corresponding path program 365 times [2022-01-18 13:34:28,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:28,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600357733] [2022-01-18 13:34:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:28,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:29,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:29,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600357733] [2022-01-18 13:34:29,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600357733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:29,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:29,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:29,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337674494] [2022-01-18 13:34:29,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:29,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:29,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:29,120 INFO L87 Difference]: Start difference. First operand 1147 states and 2863 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:30,373 INFO L93 Difference]: Finished difference Result 1326 states and 3286 transitions. [2022-01-18 13:34:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:34:30,373 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:30,374 INFO L225 Difference]: With dead ends: 1326 [2022-01-18 13:34:30,375 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:34:30,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:34:30,375 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 315 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:30,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2722 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:34:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:34:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1123. [2022-01-18 13:34:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4964349376114083) internal successors, (2801), 1122 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2801 transitions. [2022-01-18 13:34:30,385 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2801 transitions. Word has length 79 [2022-01-18 13:34:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:30,385 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2801 transitions. [2022-01-18 13:34:30,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2801 transitions. [2022-01-18 13:34:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:30,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:30,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:30,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-01-18 13:34:30,386 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1012373108, now seen corresponding path program 366 times [2022-01-18 13:34:30,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:30,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98172868] [2022-01-18 13:34:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:30,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:30,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:30,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98172868] [2022-01-18 13:34:30,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98172868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:30,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:30,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:30,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229632726] [2022-01-18 13:34:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:30,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:30,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:30,647 INFO L87 Difference]: Start difference. First operand 1123 states and 2801 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:31,768 INFO L93 Difference]: Finished difference Result 1329 states and 3288 transitions. [2022-01-18 13:34:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:34:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:31,770 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 13:34:31,770 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 13:34:31,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:34:31,771 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 317 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:31,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2502 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 13:34:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1107. [2022-01-18 13:34:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.496383363471971) internal successors, (2761), 1106 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2761 transitions. [2022-01-18 13:34:31,781 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2761 transitions. Word has length 79 [2022-01-18 13:34:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:31,781 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2761 transitions. [2022-01-18 13:34:31,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2761 transitions. [2022-01-18 13:34:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:31,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:31,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:31,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-01-18 13:34:31,782 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash -570683090, now seen corresponding path program 367 times [2022-01-18 13:34:31,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:31,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768156259] [2022-01-18 13:34:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:31,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:32,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:32,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768156259] [2022-01-18 13:34:32,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768156259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:32,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:32,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:32,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029304327] [2022-01-18 13:34:32,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:32,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:32,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:32,066 INFO L87 Difference]: Start difference. First operand 1107 states and 2761 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:33,804 INFO L93 Difference]: Finished difference Result 1350 states and 3348 transitions. [2022-01-18 13:34:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:34:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:33,806 INFO L225 Difference]: With dead ends: 1350 [2022-01-18 13:34:33,806 INFO L226 Difference]: Without dead ends: 1252 [2022-01-18 13:34:33,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=2706, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:34:33,806 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 299 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:33,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2526 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:34:33,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-01-18 13:34:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1143. [2022-01-18 13:34:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.497373029772329) internal successors, (2852), 1142 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2852 transitions. [2022-01-18 13:34:33,816 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2852 transitions. Word has length 79 [2022-01-18 13:34:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:33,816 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2852 transitions. [2022-01-18 13:34:33,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2852 transitions. [2022-01-18 13:34:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:33,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:33,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:33,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-01-18 13:34:33,817 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:33,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash 745849802, now seen corresponding path program 368 times [2022-01-18 13:34:33,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:33,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703663098] [2022-01-18 13:34:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:33,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:34,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:34,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703663098] [2022-01-18 13:34:34,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703663098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:34,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:34,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:34:34,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767908331] [2022-01-18 13:34:34,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:34,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:34:34,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:34:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:34:34,060 INFO L87 Difference]: Start difference. First operand 1143 states and 2852 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:35,153 INFO L93 Difference]: Finished difference Result 1306 states and 3231 transitions. [2022-01-18 13:34:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:34:35,153 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:35,155 INFO L225 Difference]: With dead ends: 1306 [2022-01-18 13:34:35,155 INFO L226 Difference]: Without dead ends: 1171 [2022-01-18 13:34:35,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:34:35,155 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 280 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:35,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2606 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-01-18 13:34:35,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1119. [2022-01-18 13:34:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.4955277280858676) internal successors, (2790), 1118 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2790 transitions. [2022-01-18 13:34:35,164 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2790 transitions. Word has length 79 [2022-01-18 13:34:35,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:35,165 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2790 transitions. [2022-01-18 13:34:35,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2790 transitions. [2022-01-18 13:34:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:35,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:35,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:35,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2022-01-18 13:34:35,166 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:35,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash -384665228, now seen corresponding path program 369 times [2022-01-18 13:34:35,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:35,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897242454] [2022-01-18 13:34:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:35,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:35,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:35,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897242454] [2022-01-18 13:34:35,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897242454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:35,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:35,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:34:35,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214349168] [2022-01-18 13:34:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:35,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:34:35,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:34:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:34:35,426 INFO L87 Difference]: Start difference. First operand 1119 states and 2790 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:37,092 INFO L93 Difference]: Finished difference Result 1317 states and 3255 transitions. [2022-01-18 13:34:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:34:37,092 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:37,093 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 13:34:37,093 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 13:34:37,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=2041, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 13:34:37,094 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 275 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:37,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2457 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:34:37,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 13:34:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1115. [2022-01-18 13:34:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.494614003590664) internal successors, (2779), 1114 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2779 transitions. [2022-01-18 13:34:37,103 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2779 transitions. Word has length 79 [2022-01-18 13:34:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:37,104 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2779 transitions. [2022-01-18 13:34:37,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2779 transitions. [2022-01-18 13:34:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:37,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:37,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:37,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2022-01-18 13:34:37,105 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash 7879752, now seen corresponding path program 370 times [2022-01-18 13:34:37,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:37,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207923429] [2022-01-18 13:34:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:37,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:37,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207923429] [2022-01-18 13:34:37,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207923429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:37,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:37,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 13:34:37,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669014578] [2022-01-18 13:34:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:37,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 13:34:37,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 13:34:37,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 13:34:37,383 INFO L87 Difference]: Start difference. First operand 1115 states and 2779 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:38,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:38,389 INFO L93 Difference]: Finished difference Result 1430 states and 3547 transitions. [2022-01-18 13:34:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 13:34:38,390 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:38,391 INFO L225 Difference]: With dead ends: 1430 [2022-01-18 13:34:38,391 INFO L226 Difference]: Without dead ends: 1194 [2022-01-18 13:34:38,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 13:34:38,391 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 282 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:38,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 2562 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-01-18 13:34:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-01-18 13:34:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.5027624309392267) internal successors, (2718), 1086 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2718 transitions. [2022-01-18 13:34:38,400 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2718 transitions. Word has length 79 [2022-01-18 13:34:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:38,401 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2718 transitions. [2022-01-18 13:34:38,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:38,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2718 transitions. [2022-01-18 13:34:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:38,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:38,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:38,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2022-01-18 13:34:38,402 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:38,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -749199738, now seen corresponding path program 371 times [2022-01-18 13:34:38,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:38,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178549744] [2022-01-18 13:34:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:38,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:38,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:38,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178549744] [2022-01-18 13:34:38,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178549744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:38,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:38,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:34:38,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705939381] [2022-01-18 13:34:38,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:38,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:34:38,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:38,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:34:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:34:38,693 INFO L87 Difference]: Start difference. First operand 1087 states and 2718 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:40,114 INFO L93 Difference]: Finished difference Result 1405 states and 3522 transitions. [2022-01-18 13:34:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 13:34:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:40,116 INFO L225 Difference]: With dead ends: 1405 [2022-01-18 13:34:40,116 INFO L226 Difference]: Without dead ends: 1275 [2022-01-18 13:34:40,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=315, Invalid=3717, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 13:34:40,117 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 333 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:40,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2991 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:34:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2022-01-18 13:34:40,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1151. [2022-01-18 13:34:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.5095652173913043) internal successors, (2886), 1150 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2886 transitions. [2022-01-18 13:34:40,127 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2886 transitions. Word has length 79 [2022-01-18 13:34:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:40,127 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2886 transitions. [2022-01-18 13:34:40,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2886 transitions. [2022-01-18 13:34:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:40,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:40,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:40,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-01-18 13:34:40,129 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1602590904, now seen corresponding path program 372 times [2022-01-18 13:34:40,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:40,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514368195] [2022-01-18 13:34:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:40,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:40,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:40,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514368195] [2022-01-18 13:34:40,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514368195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:40,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:40,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:34:40,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887548982] [2022-01-18 13:34:40,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:40,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:34:40,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:40,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:34:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:34:40,419 INFO L87 Difference]: Start difference. First operand 1151 states and 2886 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:42,899 INFO L93 Difference]: Finished difference Result 1404 states and 3513 transitions. [2022-01-18 13:34:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 13:34:42,899 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:42,901 INFO L225 Difference]: With dead ends: 1404 [2022-01-18 13:34:42,901 INFO L226 Difference]: Without dead ends: 1306 [2022-01-18 13:34:42,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:34:42,902 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 360 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:42,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2997 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 13:34:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-01-18 13:34:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1155. [2022-01-18 13:34:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5069324090121317) internal successors, (2893), 1154 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:42,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2893 transitions. [2022-01-18 13:34:42,912 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2893 transitions. Word has length 79 [2022-01-18 13:34:42,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:42,912 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2893 transitions. [2022-01-18 13:34:42,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:42,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2893 transitions. [2022-01-18 13:34:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:42,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:42,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:42,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-01-18 13:34:42,913 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash -888353626, now seen corresponding path program 373 times [2022-01-18 13:34:42,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:42,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885590372] [2022-01-18 13:34:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:42,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:43,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:43,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885590372] [2022-01-18 13:34:43,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885590372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:43,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:43,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:34:43,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997694316] [2022-01-18 13:34:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:43,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:34:43,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:43,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:34:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:34:43,200 INFO L87 Difference]: Start difference. First operand 1155 states and 2893 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:44,826 INFO L93 Difference]: Finished difference Result 1387 states and 3464 transitions. [2022-01-18 13:34:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:34:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:44,828 INFO L225 Difference]: With dead ends: 1387 [2022-01-18 13:34:44,828 INFO L226 Difference]: Without dead ends: 1274 [2022-01-18 13:34:44,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:34:44,829 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 360 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:44,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2911 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:34:44,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-01-18 13:34:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1143. [2022-01-18 13:34:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.5043782837127844) internal successors, (2860), 1142 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2860 transitions. [2022-01-18 13:34:44,838 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2860 transitions. Word has length 79 [2022-01-18 13:34:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:44,838 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2860 transitions. [2022-01-18 13:34:44,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2860 transitions. [2022-01-18 13:34:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:44,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:44,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:44,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-01-18 13:34:44,840 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash -562905400, now seen corresponding path program 374 times [2022-01-18 13:34:44,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:44,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872496948] [2022-01-18 13:34:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:44,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:45,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:45,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872496948] [2022-01-18 13:34:45,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872496948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:45,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:45,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:34:45,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078990043] [2022-01-18 13:34:45,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:45,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:34:45,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:45,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:34:45,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:34:45,128 INFO L87 Difference]: Start difference. First operand 1143 states and 2860 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:46,930 INFO L93 Difference]: Finished difference Result 1393 states and 3473 transitions. [2022-01-18 13:34:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:34:46,930 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:46,931 INFO L225 Difference]: With dead ends: 1393 [2022-01-18 13:34:46,932 INFO L226 Difference]: Without dead ends: 1243 [2022-01-18 13:34:46,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=288, Invalid=3372, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 13:34:46,932 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 339 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:46,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2915 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:34:46,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-01-18 13:34:46,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1139. [2022-01-18 13:34:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.5035149384885766) internal successors, (2849), 1138 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2849 transitions. [2022-01-18 13:34:46,942 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2849 transitions. Word has length 79 [2022-01-18 13:34:46,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:46,942 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2849 transitions. [2022-01-18 13:34:46,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:46,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2849 transitions. [2022-01-18 13:34:46,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:46,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:46,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:46,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2022-01-18 13:34:46,944 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash 298676934, now seen corresponding path program 375 times [2022-01-18 13:34:46,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636678833] [2022-01-18 13:34:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:46,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:47,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:47,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636678833] [2022-01-18 13:34:47,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636678833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:47,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:47,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:47,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904629227] [2022-01-18 13:34:47,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:47,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:47,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:47,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:47,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:47,219 INFO L87 Difference]: Start difference. First operand 1139 states and 2849 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:50,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:34:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:50,540 INFO L93 Difference]: Finished difference Result 1382 states and 3440 transitions. [2022-01-18 13:34:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:34:50,541 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:50,542 INFO L225 Difference]: With dead ends: 1382 [2022-01-18 13:34:50,542 INFO L226 Difference]: Without dead ends: 1284 [2022-01-18 13:34:50,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:34:50,543 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 337 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:50,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2683 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 13:34:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-01-18 13:34:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1163. [2022-01-18 13:34:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.5017211703958693) internal successors, (2907), 1162 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2907 transitions. [2022-01-18 13:34:50,553 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2907 transitions. Word has length 79 [2022-01-18 13:34:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:50,554 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2907 transitions. [2022-01-18 13:34:50,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2907 transitions. [2022-01-18 13:34:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:50,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:50,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:50,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2022-01-18 13:34:50,555 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1615209826, now seen corresponding path program 376 times [2022-01-18 13:34:50,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:50,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217848844] [2022-01-18 13:34:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:50,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:50,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:50,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217848844] [2022-01-18 13:34:50,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217848844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:50,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:50,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:50,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467450925] [2022-01-18 13:34:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:50,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:50,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:50,825 INFO L87 Difference]: Start difference. First operand 1163 states and 2907 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:52,567 INFO L93 Difference]: Finished difference Result 1350 states and 3352 transitions. [2022-01-18 13:34:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:34:52,567 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:52,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:52,569 INFO L225 Difference]: With dead ends: 1350 [2022-01-18 13:34:52,569 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:34:52,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:34:52,569 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 312 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:52,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2642 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:34:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:34:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1115. [2022-01-18 13:34:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.5017953321364454) internal successors, (2787), 1114 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2787 transitions. [2022-01-18 13:34:52,579 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2787 transitions. Word has length 79 [2022-01-18 13:34:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:52,579 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2787 transitions. [2022-01-18 13:34:52,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2787 transitions. [2022-01-18 13:34:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:52,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:52,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:52,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-01-18 13:34:52,580 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash -407589176, now seen corresponding path program 377 times [2022-01-18 13:34:52,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:52,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596763115] [2022-01-18 13:34:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:52,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:52,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:52,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596763115] [2022-01-18 13:34:52,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596763115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:52,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:52,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:52,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812001928] [2022-01-18 13:34:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:52,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:52,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:52,861 INFO L87 Difference]: Start difference. First operand 1115 states and 2787 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:55,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:34:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:56,026 INFO L93 Difference]: Finished difference Result 1337 states and 3331 transitions. [2022-01-18 13:34:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 13:34:56,026 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:56,028 INFO L225 Difference]: With dead ends: 1337 [2022-01-18 13:34:56,028 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 13:34:56,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 13:34:56,029 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 326 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:56,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2489 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1005 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 13:34:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 13:34:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1139. [2022-01-18 13:34:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.5035149384885766) internal successors, (2849), 1138 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2849 transitions. [2022-01-18 13:34:56,039 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2849 transitions. Word has length 79 [2022-01-18 13:34:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:56,039 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2849 transitions. [2022-01-18 13:34:56,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:56,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2849 transitions. [2022-01-18 13:34:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:56,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:56,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:56,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-01-18 13:34:56,040 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash -774483606, now seen corresponding path program 378 times [2022-01-18 13:34:56,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:56,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664641470] [2022-01-18 13:34:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:56,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:56,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:56,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664641470] [2022-01-18 13:34:56,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664641470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:56,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:56,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:56,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039058003] [2022-01-18 13:34:56,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:56,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:56,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:56,319 INFO L87 Difference]: Start difference. First operand 1139 states and 2849 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:57,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:57,680 INFO L93 Difference]: Finished difference Result 1348 states and 3355 transitions. [2022-01-18 13:34:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:34:57,680 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:57,681 INFO L225 Difference]: With dead ends: 1348 [2022-01-18 13:34:57,681 INFO L226 Difference]: Without dead ends: 1250 [2022-01-18 13:34:57,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:34:57,682 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 287 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:57,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2897 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:34:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-01-18 13:34:57,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1143. [2022-01-18 13:34:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.500875656742557) internal successors, (2856), 1142 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2856 transitions. [2022-01-18 13:34:57,692 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2856 transitions. Word has length 79 [2022-01-18 13:34:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:57,692 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2856 transitions. [2022-01-18 13:34:57,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2856 transitions. [2022-01-18 13:34:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:57,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:57,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:57,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2022-01-18 13:34:57,693 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash -60246328, now seen corresponding path program 379 times [2022-01-18 13:34:57,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:57,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675742954] [2022-01-18 13:34:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:57,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:58,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:58,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675742954] [2022-01-18 13:34:58,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675742954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:58,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:58,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:58,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262054483] [2022-01-18 13:34:58,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:58,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:58,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:58,003 INFO L87 Difference]: Start difference. First operand 1143 states and 2856 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:34:59,214 INFO L93 Difference]: Finished difference Result 1316 states and 3271 transitions. [2022-01-18 13:34:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:34:59,214 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:34:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:34:59,216 INFO L225 Difference]: With dead ends: 1316 [2022-01-18 13:34:59,216 INFO L226 Difference]: Without dead ends: 1207 [2022-01-18 13:34:59,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=272, Invalid=2808, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:34:59,216 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 343 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:34:59,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2497 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:34:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-18 13:34:59,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1135. [2022-01-18 13:34:59,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.502645502645503) internal successors, (2838), 1134 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2838 transitions. [2022-01-18 13:34:59,226 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2838 transitions. Word has length 79 [2022-01-18 13:34:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:34:59,226 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2838 transitions. [2022-01-18 13:34:59,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:34:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2838 transitions. [2022-01-18 13:34:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:34:59,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:34:59,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:34:59,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2022-01-18 13:34:59,227 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:34:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:34:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 410444486, now seen corresponding path program 380 times [2022-01-18 13:34:59,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:34:59,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72118202] [2022-01-18 13:34:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:34:59,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:34:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:34:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:34:59,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:34:59,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72118202] [2022-01-18 13:34:59,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72118202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:34:59,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:34:59,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:34:59,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524452150] [2022-01-18 13:34:59,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:34:59,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:34:59,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:34:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:34:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:34:59,507 INFO L87 Difference]: Start difference. First operand 1135 states and 2838 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:01,004 INFO L93 Difference]: Finished difference Result 1370 states and 3407 transitions. [2022-01-18 13:35:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:35:01,004 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:01,005 INFO L225 Difference]: With dead ends: 1370 [2022-01-18 13:35:01,006 INFO L226 Difference]: Without dead ends: 1272 [2022-01-18 13:35:01,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:35:01,006 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 291 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:01,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2975 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:35:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-01-18 13:35:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1159. [2022-01-18 13:35:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5008635578583767) internal successors, (2896), 1158 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2896 transitions. [2022-01-18 13:35:01,016 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2896 transitions. Word has length 79 [2022-01-18 13:35:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:01,016 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2896 transitions. [2022-01-18 13:35:01,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2896 transitions. [2022-01-18 13:35:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:01,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:01,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:01,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2022-01-18 13:35:01,018 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1726977378, now seen corresponding path program 381 times [2022-01-18 13:35:01,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:01,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572990188] [2022-01-18 13:35:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:01,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:01,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:01,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572990188] [2022-01-18 13:35:01,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572990188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:01,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:01,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:01,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230714533] [2022-01-18 13:35:01,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:01,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:01,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:01,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:01,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:01,301 INFO L87 Difference]: Start difference. First operand 1159 states and 2896 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:02,503 INFO L93 Difference]: Finished difference Result 1338 states and 3319 transitions. [2022-01-18 13:35:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:35:02,503 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:02,505 INFO L225 Difference]: With dead ends: 1338 [2022-01-18 13:35:02,505 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 13:35:02,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:35:02,505 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 290 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:02,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2820 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:35:02,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 13:35:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1127. [2022-01-18 13:35:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5008880994671405) internal successors, (2816), 1126 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-01-18 13:35:02,515 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-01-18 13:35:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:02,515 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-01-18 13:35:02,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-01-18 13:35:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:02,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:02,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:02,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2022-01-18 13:35:02,516 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1244328356, now seen corresponding path program 382 times [2022-01-18 13:35:02,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:02,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074525276] [2022-01-18 13:35:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:02,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:02,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:02,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074525276] [2022-01-18 13:35:02,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074525276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:02,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:02,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:35:02,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739083414] [2022-01-18 13:35:02,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:02,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:35:02,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:35:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:35:02,813 INFO L87 Difference]: Start difference. First operand 1127 states and 2816 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:05,342 INFO L93 Difference]: Finished difference Result 1398 states and 3480 transitions. [2022-01-18 13:35:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 13:35:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:05,344 INFO L225 Difference]: With dead ends: 1398 [2022-01-18 13:35:05,344 INFO L226 Difference]: Without dead ends: 1300 [2022-01-18 13:35:05,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 13:35:05,345 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 361 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:05,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 2799 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 13:35:05,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-01-18 13:35:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1155. [2022-01-18 13:35:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5) internal successors, (2885), 1154 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-01-18 13:35:05,355 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-01-18 13:35:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:05,355 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-01-18 13:35:05,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-01-18 13:35:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:05,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:05,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:05,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-01-18 13:35:05,356 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1734106048, now seen corresponding path program 383 times [2022-01-18 13:35:05,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:05,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281360353] [2022-01-18 13:35:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:05,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:05,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:05,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281360353] [2022-01-18 13:35:05,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281360353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:05,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:05,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:35:05,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840372906] [2022-01-18 13:35:05,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:05,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:35:05,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:05,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:35:05,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:35:05,630 INFO L87 Difference]: Start difference. First operand 1155 states and 2885 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:07,153 INFO L93 Difference]: Finished difference Result 1354 states and 3363 transitions. [2022-01-18 13:35:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 13:35:07,153 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:07,155 INFO L225 Difference]: With dead ends: 1354 [2022-01-18 13:35:07,155 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 13:35:07,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=306, Invalid=3476, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 13:35:07,155 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 315 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:07,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 3008 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:35:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 13:35:07,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1131. [2022-01-18 13:35:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4982300884955753) internal successors, (2823), 1130 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2823 transitions. [2022-01-18 13:35:07,164 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2823 transitions. Word has length 79 [2022-01-18 13:35:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:07,165 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2823 transitions. [2022-01-18 13:35:07,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:07,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2823 transitions. [2022-01-18 13:35:07,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:07,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:07,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:07,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-01-18 13:35:07,166 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:07,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:07,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1430346218, now seen corresponding path program 384 times [2022-01-18 13:35:07,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:07,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136714203] [2022-01-18 13:35:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:07,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:07,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:07,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136714203] [2022-01-18 13:35:07,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136714203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:07,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:07,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:07,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284974743] [2022-01-18 13:35:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:07,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:07,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:07,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:07,439 INFO L87 Difference]: Start difference. First operand 1131 states and 2823 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:08,573 INFO L93 Difference]: Finished difference Result 1357 states and 3365 transitions. [2022-01-18 13:35:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:35:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:08,575 INFO L225 Difference]: With dead ends: 1357 [2022-01-18 13:35:08,575 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 13:35:08,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=2818, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:35:08,576 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 341 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:08,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2812 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:35:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 13:35:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1115. [2022-01-18 13:35:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4982046678635546) internal successors, (2783), 1114 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2783 transitions. [2022-01-18 13:35:08,585 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2783 transitions. Word has length 79 [2022-01-18 13:35:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:08,585 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2783 transitions. [2022-01-18 13:35:08,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2783 transitions. [2022-01-18 13:35:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:08,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:08,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:08,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-01-18 13:35:08,587 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:08,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1872036236, now seen corresponding path program 385 times [2022-01-18 13:35:08,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:08,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731071380] [2022-01-18 13:35:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:08,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:08,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:08,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731071380] [2022-01-18 13:35:08,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731071380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:08,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:08,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:08,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399541088] [2022-01-18 13:35:08,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:08,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:08,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:08,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:08,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:08,863 INFO L87 Difference]: Start difference. First operand 1115 states and 2783 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:11,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:35:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:12,301 INFO L93 Difference]: Finished difference Result 1374 states and 3414 transitions. [2022-01-18 13:35:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:35:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:12,303 INFO L225 Difference]: With dead ends: 1374 [2022-01-18 13:35:12,303 INFO L226 Difference]: Without dead ends: 1276 [2022-01-18 13:35:12,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:35:12,303 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 289 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:12,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2827 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1087 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 13:35:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2022-01-18 13:35:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1151. [2022-01-18 13:35:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4991304347826087) internal successors, (2874), 1150 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2874 transitions. [2022-01-18 13:35:12,313 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2874 transitions. Word has length 79 [2022-01-18 13:35:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:12,313 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2874 transitions. [2022-01-18 13:35:12,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2874 transitions. [2022-01-18 13:35:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:12,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:12,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:12,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-01-18 13:35:12,315 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:12,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1106398168, now seen corresponding path program 386 times [2022-01-18 13:35:12,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:12,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255884390] [2022-01-18 13:35:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:12,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:12,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:12,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255884390] [2022-01-18 13:35:12,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255884390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:12,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:12,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:12,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098444576] [2022-01-18 13:35:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:12,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:12,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:12,571 INFO L87 Difference]: Start difference. First operand 1151 states and 2874 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:14,009 INFO L93 Difference]: Finished difference Result 1330 states and 3297 transitions. [2022-01-18 13:35:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:35:14,009 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:14,011 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 13:35:14,011 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 13:35:14,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=277, Invalid=3029, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:35:14,011 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 297 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:14,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2775 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 13:35:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 13:35:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1127. [2022-01-18 13:35:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.497335701598579) internal successors, (2812), 1126 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2812 transitions. [2022-01-18 13:35:14,021 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2812 transitions. Word has length 79 [2022-01-18 13:35:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:14,021 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2812 transitions. [2022-01-18 13:35:14,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2812 transitions. [2022-01-18 13:35:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:14,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:14,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:14,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2022-01-18 13:35:14,023 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:14,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2058054098, now seen corresponding path program 387 times [2022-01-18 13:35:14,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:14,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536302893] [2022-01-18 13:35:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:14,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:14,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:14,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536302893] [2022-01-18 13:35:14,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536302893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:14,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:14,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:14,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306359792] [2022-01-18 13:35:14,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:14,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:14,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:14,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:14,294 INFO L87 Difference]: Start difference. First operand 1127 states and 2812 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:15,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:15,380 INFO L93 Difference]: Finished difference Result 1341 states and 3321 transitions. [2022-01-18 13:35:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:35:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:15,381 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 13:35:15,381 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 13:35:15,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=2416, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:35:15,381 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 292 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:15,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2752 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:35:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 13:35:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1123. [2022-01-18 13:35:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4964349376114083) internal successors, (2801), 1122 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2801 transitions. [2022-01-18 13:35:15,391 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2801 transitions. Word has length 79 [2022-01-18 13:35:15,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:15,391 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2801 transitions. [2022-01-18 13:35:15,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2801 transitions. [2022-01-18 13:35:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:15,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:15,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:15,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2022-01-18 13:35:15,392 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1844368218, now seen corresponding path program 388 times [2022-01-18 13:35:15,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:15,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147666775] [2022-01-18 13:35:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:15,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:15,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:15,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147666775] [2022-01-18 13:35:15,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147666775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:15,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:15,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:15,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5599931] [2022-01-18 13:35:15,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:15,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:15,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:15,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:15,653 INFO L87 Difference]: Start difference. First operand 1123 states and 2801 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:16,834 INFO L93 Difference]: Finished difference Result 1446 states and 3591 transitions. [2022-01-18 13:35:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:35:16,834 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:16,836 INFO L225 Difference]: With dead ends: 1446 [2022-01-18 13:35:16,836 INFO L226 Difference]: Without dead ends: 1218 [2022-01-18 13:35:16,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=2418, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:35:16,836 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 346 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:16,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2720 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:35:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-01-18 13:35:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1095. [2022-01-18 13:35:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.5009140767824496) internal successors, (2736), 1094 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2736 transitions. [2022-01-18 13:35:16,846 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2736 transitions. Word has length 79 [2022-01-18 13:35:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:16,846 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2736 transitions. [2022-01-18 13:35:16,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2736 transitions. [2022-01-18 13:35:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:16,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:16,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:16,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2022-01-18 13:35:16,847 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash -630957972, now seen corresponding path program 389 times [2022-01-18 13:35:16,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:16,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100168480] [2022-01-18 13:35:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:16,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:17,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:17,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100168480] [2022-01-18 13:35:17,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100168480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:17,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:17,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:17,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83552662] [2022-01-18 13:35:17,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:17,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:17,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:17,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:17,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:17,136 INFO L87 Difference]: Start difference. First operand 1095 states and 2736 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:18,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:18,304 INFO L93 Difference]: Finished difference Result 1349 states and 3364 transitions. [2022-01-18 13:35:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 13:35:18,304 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:18,306 INFO L225 Difference]: With dead ends: 1349 [2022-01-18 13:35:18,306 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 13:35:18,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 13:35:18,306 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 295 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:18,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2364 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:35:18,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 13:35:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1151. [2022-01-18 13:35:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.506086956521739) internal successors, (2882), 1150 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2882 transitions. [2022-01-18 13:35:18,323 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2882 transitions. Word has length 79 [2022-01-18 13:35:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:18,323 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2882 transitions. [2022-01-18 13:35:18,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2882 transitions. [2022-01-18 13:35:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:18,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:18,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:18,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2022-01-18 13:35:18,325 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1484349138, now seen corresponding path program 390 times [2022-01-18 13:35:18,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:18,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399086724] [2022-01-18 13:35:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:18,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:18,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:18,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399086724] [2022-01-18 13:35:18,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399086724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:18,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:18,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:18,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464702144] [2022-01-18 13:35:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:18,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:18,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:18,589 INFO L87 Difference]: Start difference. First operand 1151 states and 2882 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:20,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:35:21,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:21,849 INFO L93 Difference]: Finished difference Result 1344 states and 3344 transitions. [2022-01-18 13:35:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:35:21,849 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:21,850 INFO L225 Difference]: With dead ends: 1344 [2022-01-18 13:35:21,850 INFO L226 Difference]: Without dead ends: 1246 [2022-01-18 13:35:21,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=2320, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:35:21,851 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 291 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:21,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2556 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 986 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 13:35:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-01-18 13:35:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1155. [2022-01-18 13:35:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.503466204506066) internal successors, (2889), 1154 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2889 transitions. [2022-01-18 13:35:21,861 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2889 transitions. Word has length 79 [2022-01-18 13:35:21,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:21,861 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2889 transitions. [2022-01-18 13:35:21,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2889 transitions. [2022-01-18 13:35:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:21,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:21,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:21,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2022-01-18 13:35:21,862 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash -770111860, now seen corresponding path program 391 times [2022-01-18 13:35:21,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:21,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686115029] [2022-01-18 13:35:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:21,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:22,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:22,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686115029] [2022-01-18 13:35:22,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686115029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:22,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:22,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:22,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442402686] [2022-01-18 13:35:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:22,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:22,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:22,134 INFO L87 Difference]: Start difference. First operand 1155 states and 2889 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:23,120 INFO L93 Difference]: Finished difference Result 1312 states and 3260 transitions. [2022-01-18 13:35:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:35:23,120 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:23,121 INFO L225 Difference]: With dead ends: 1312 [2022-01-18 13:35:23,122 INFO L226 Difference]: Without dead ends: 1199 [2022-01-18 13:35:23,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=2222, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:35:23,122 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 270 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:23,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2569 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:35:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-01-18 13:35:23,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1143. [2022-01-18 13:35:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.5043782837127844) internal successors, (2860), 1142 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2860 transitions. [2022-01-18 13:35:23,131 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2860 transitions. Word has length 79 [2022-01-18 13:35:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:23,131 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2860 transitions. [2022-01-18 13:35:23,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2860 transitions. [2022-01-18 13:35:23,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:23,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:23,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:23,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2022-01-18 13:35:23,133 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:23,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:23,133 INFO L85 PathProgramCache]: Analyzing trace with hash -211153268, now seen corresponding path program 392 times [2022-01-18 13:35:23,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:23,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420245721] [2022-01-18 13:35:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:23,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:23,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:23,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420245721] [2022-01-18 13:35:23,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420245721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:23,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:23,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:23,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82534420] [2022-01-18 13:35:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:23,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:23,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:23,405 INFO L87 Difference]: Start difference. First operand 1143 states and 2860 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:24,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:24,522 INFO L93 Difference]: Finished difference Result 1362 states and 3385 transitions. [2022-01-18 13:35:24,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:35:24,522 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:24,523 INFO L225 Difference]: With dead ends: 1362 [2022-01-18 13:35:24,524 INFO L226 Difference]: Without dead ends: 1264 [2022-01-18 13:35:24,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:35:24,524 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 284 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:24,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2605 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:35:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-01-18 13:35:24,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1167. [2022-01-18 13:35:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.502572898799314) internal successors, (2918), 1166 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2918 transitions. [2022-01-18 13:35:24,535 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2918 transitions. Word has length 79 [2022-01-18 13:35:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:24,535 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2918 transitions. [2022-01-18 13:35:24,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2918 transitions. [2022-01-18 13:35:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:24,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:24,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:24,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2022-01-18 13:35:24,536 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:24,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:24,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1105379624, now seen corresponding path program 393 times [2022-01-18 13:35:24,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:24,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95815738] [2022-01-18 13:35:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:24,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:24,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:24,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95815738] [2022-01-18 13:35:24,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95815738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:24,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:24,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:24,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190161200] [2022-01-18 13:35:24,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:24,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:24,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:24,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:24,800 INFO L87 Difference]: Start difference. First operand 1167 states and 2918 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:25,828 INFO L93 Difference]: Finished difference Result 1330 states and 3297 transitions. [2022-01-18 13:35:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:35:25,828 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:25,829 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 13:35:25,829 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 13:35:25,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:35:25,830 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 261 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:25,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2673 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:35:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 13:35:25,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1127. [2022-01-18 13:35:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5008880994671405) internal successors, (2816), 1126 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-01-18 13:35:25,839 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-01-18 13:35:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:25,839 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-01-18 13:35:25,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-01-18 13:35:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:25,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:25,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:25,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2022-01-18 13:35:25,840 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1959470732, now seen corresponding path program 394 times [2022-01-18 13:35:25,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:25,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583979130] [2022-01-18 13:35:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:25,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:26,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:26,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583979130] [2022-01-18 13:35:26,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583979130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:26,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:26,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:26,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215462593] [2022-01-18 13:35:26,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:26,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:26,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:26,120 INFO L87 Difference]: Start difference. First operand 1127 states and 2816 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:27,282 INFO L93 Difference]: Finished difference Result 1382 states and 3436 transitions. [2022-01-18 13:35:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:35:27,282 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:27,284 INFO L225 Difference]: With dead ends: 1382 [2022-01-18 13:35:27,284 INFO L226 Difference]: Without dead ends: 1284 [2022-01-18 13:35:27,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=270, Invalid=2922, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:35:27,284 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 300 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:27,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2755 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:35:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-01-18 13:35:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1155. [2022-01-18 13:35:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5) internal successors, (2885), 1154 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-01-18 13:35:27,294 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-01-18 13:35:27,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:27,294 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-01-18 13:35:27,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-01-18 13:35:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:27,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:27,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:27,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2022-01-18 13:35:27,296 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:27,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1018963672, now seen corresponding path program 395 times [2022-01-18 13:35:27,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:27,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047013238] [2022-01-18 13:35:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:27,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:27,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:27,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047013238] [2022-01-18 13:35:27,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047013238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:27,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:27,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:27,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704389959] [2022-01-18 13:35:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:27,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:27,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:27,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:27,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:27,551 INFO L87 Difference]: Start difference. First operand 1155 states and 2885 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:28,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:28,846 INFO L93 Difference]: Finished difference Result 1338 states and 3319 transitions. [2022-01-18 13:35:28,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 13:35:28,846 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:28,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:28,847 INFO L225 Difference]: With dead ends: 1338 [2022-01-18 13:35:28,847 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 13:35:28,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=2818, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:35:28,848 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 323 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:28,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2864 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:35:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 13:35:28,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1131. [2022-01-18 13:35:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4982300884955753) internal successors, (2823), 1130 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2823 transitions. [2022-01-18 13:35:28,857 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2823 transitions. Word has length 79 [2022-01-18 13:35:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:28,857 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2823 transitions. [2022-01-18 13:35:28,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2823 transitions. [2022-01-18 13:35:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:28,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:28,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:28,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2022-01-18 13:35:28,859 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2145488594, now seen corresponding path program 396 times [2022-01-18 13:35:28,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:28,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122975793] [2022-01-18 13:35:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:28,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:29,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:29,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122975793] [2022-01-18 13:35:29,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122975793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:29,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:29,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:29,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451202899] [2022-01-18 13:35:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:29,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:29,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:29,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:29,130 INFO L87 Difference]: Start difference. First operand 1131 states and 2823 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:30,343 INFO L93 Difference]: Finished difference Result 1341 states and 3321 transitions. [2022-01-18 13:35:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:35:30,343 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:30,344 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 13:35:30,344 INFO L226 Difference]: Without dead ends: 1171 [2022-01-18 13:35:30,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 13:35:30,345 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 284 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:30,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2643 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:35:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-01-18 13:35:30,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1119. [2022-01-18 13:35:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.4991055456171734) internal successors, (2794), 1118 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2794 transitions. [2022-01-18 13:35:30,354 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2794 transitions. Word has length 79 [2022-01-18 13:35:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:30,354 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2794 transitions. [2022-01-18 13:35:30,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:30,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2794 transitions. [2022-01-18 13:35:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:30,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:30,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:30,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2022-01-18 13:35:30,356 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2024173870, now seen corresponding path program 397 times [2022-01-18 13:35:30,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:30,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368109200] [2022-01-18 13:35:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:30,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:30,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:30,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368109200] [2022-01-18 13:35:30,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368109200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:30,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:30,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:30,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566014137] [2022-01-18 13:35:30,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:30,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:30,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:30,623 INFO L87 Difference]: Start difference. First operand 1119 states and 2794 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:32,474 INFO L93 Difference]: Finished difference Result 1378 states and 3425 transitions. [2022-01-18 13:35:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:35:32,474 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:32,476 INFO L225 Difference]: With dead ends: 1378 [2022-01-18 13:35:32,476 INFO L226 Difference]: Without dead ends: 1280 [2022-01-18 13:35:32,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:35:32,476 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 303 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:32,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2749 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:35:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-01-18 13:35:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1155. [2022-01-18 13:35:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5) internal successors, (2885), 1154 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-01-18 13:35:32,486 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-01-18 13:35:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:32,486 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-01-18 13:35:32,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-01-18 13:35:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:32,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:32,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:32,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2022-01-18 13:35:32,488 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:32,488 INFO L85 PathProgramCache]: Analyzing trace with hash -954260534, now seen corresponding path program 398 times [2022-01-18 13:35:32,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:32,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693421494] [2022-01-18 13:35:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:32,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:32,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:32,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693421494] [2022-01-18 13:35:32,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693421494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:32,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:32,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:32,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67149349] [2022-01-18 13:35:32,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:32,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:32,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:32,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:32,754 INFO L87 Difference]: Start difference. First operand 1155 states and 2885 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:35,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:35:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:36,257 INFO L93 Difference]: Finished difference Result 1334 states and 3308 transitions. [2022-01-18 13:35:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:35:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:36,259 INFO L225 Difference]: With dead ends: 1334 [2022-01-18 13:35:36,259 INFO L226 Difference]: Without dead ends: 1199 [2022-01-18 13:35:36,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=2930, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:35:36,260 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 299 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:36,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2840 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1102 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 13:35:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-01-18 13:35:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1131. [2022-01-18 13:35:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.4982300884955753) internal successors, (2823), 1130 states have internal predecessors, (2823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2823 transitions. [2022-01-18 13:35:36,269 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2823 transitions. Word has length 79 [2022-01-18 13:35:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:36,270 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2823 transitions. [2022-01-18 13:35:36,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2823 transitions. [2022-01-18 13:35:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:36,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:36,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:36,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2022-01-18 13:35:36,271 INFO L402 AbstractCegarLoop]: === Iteration 399 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2084775564, now seen corresponding path program 399 times [2022-01-18 13:35:36,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:36,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767319041] [2022-01-18 13:35:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:36,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:36,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:36,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767319041] [2022-01-18 13:35:36,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767319041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:36,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:36,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:36,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801545746] [2022-01-18 13:35:36,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:36,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:36,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:36,531 INFO L87 Difference]: Start difference. First operand 1131 states and 2823 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:37,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:37,510 INFO L93 Difference]: Finished difference Result 1345 states and 3332 transitions. [2022-01-18 13:35:37,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:35:37,511 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:37,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:37,512 INFO L225 Difference]: With dead ends: 1345 [2022-01-18 13:35:37,512 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 13:35:37,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=224, Invalid=2326, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:35:37,513 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 280 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:37,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2819 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:35:37,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 13:35:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1127. [2022-01-18 13:35:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.497335701598579) internal successors, (2812), 1126 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2812 transitions. [2022-01-18 13:35:37,522 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2812 transitions. Word has length 79 [2022-01-18 13:35:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:37,522 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2812 transitions. [2022-01-18 13:35:37,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2812 transitions. [2022-01-18 13:35:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:37,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:37,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:37,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2022-01-18 13:35:37,524 INFO L402 AbstractCegarLoop]: === Iteration 400 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1692230584, now seen corresponding path program 400 times [2022-01-18 13:35:37,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:37,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871185810] [2022-01-18 13:35:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:37,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:37,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871185810] [2022-01-18 13:35:37,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871185810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:37,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:37,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:37,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852751892] [2022-01-18 13:35:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:37,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:37,816 INFO L87 Difference]: Start difference. First operand 1127 states and 2812 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:38,890 INFO L93 Difference]: Finished difference Result 1446 states and 3587 transitions. [2022-01-18 13:35:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 13:35:38,890 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:38,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:38,891 INFO L225 Difference]: With dead ends: 1446 [2022-01-18 13:35:38,891 INFO L226 Difference]: Without dead ends: 1226 [2022-01-18 13:35:38,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=2420, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:35:38,892 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 298 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:38,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2704 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 13:35:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-01-18 13:35:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1111. [2022-01-18 13:35:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.497297297297297) internal successors, (2772), 1110 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2772 transitions. [2022-01-18 13:35:38,901 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2772 transitions. Word has length 79 [2022-01-18 13:35:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:38,901 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2772 transitions. [2022-01-18 13:35:38,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2772 transitions. [2022-01-18 13:35:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:38,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:38,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:38,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2022-01-18 13:35:38,903 INFO L402 AbstractCegarLoop]: === Iteration 401 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2048770350, now seen corresponding path program 401 times [2022-01-18 13:35:38,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:38,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447338986] [2022-01-18 13:35:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:38,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:39,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:39,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447338986] [2022-01-18 13:35:39,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447338986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:39,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:39,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:35:39,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96980997] [2022-01-18 13:35:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:39,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:35:39,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:35:39,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:35:39,189 INFO L87 Difference]: Start difference. First operand 1111 states and 2772 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:41,260 INFO L93 Difference]: Finished difference Result 1362 states and 3381 transitions. [2022-01-18 13:35:41,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 13:35:41,261 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:41,262 INFO L225 Difference]: With dead ends: 1362 [2022-01-18 13:35:41,262 INFO L226 Difference]: Without dead ends: 1264 [2022-01-18 13:35:41,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=3148, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:35:41,263 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 307 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:41,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 3014 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 13:35:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-01-18 13:35:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1151. [2022-01-18 13:35:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.4991304347826087) internal successors, (2874), 1150 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2874 transitions. [2022-01-18 13:35:41,272 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2874 transitions. Word has length 79 [2022-01-18 13:35:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:41,272 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2874 transitions. [2022-01-18 13:35:41,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2874 transitions. [2022-01-18 13:35:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:41,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:41,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:41,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2022-01-18 13:35:41,274 INFO L402 AbstractCegarLoop]: === Iteration 402 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:41,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash -929664054, now seen corresponding path program 402 times [2022-01-18 13:35:41,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:41,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126488626] [2022-01-18 13:35:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:41,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:41,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:41,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126488626] [2022-01-18 13:35:41,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126488626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:41,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:41,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 13:35:41,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643446414] [2022-01-18 13:35:41,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:41,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 13:35:41,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 13:35:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 13:35:41,566 INFO L87 Difference]: Start difference. First operand 1151 states and 2874 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:42,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:42,921 INFO L93 Difference]: Finished difference Result 1318 states and 3264 transitions. [2022-01-18 13:35:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 13:35:42,921 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:42,923 INFO L225 Difference]: With dead ends: 1318 [2022-01-18 13:35:42,923 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 13:35:42,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=266, Invalid=3040, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 13:35:42,923 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 309 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:42,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2748 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:35:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 13:35:42,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1127. [2022-01-18 13:35:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.497335701598579) internal successors, (2812), 1126 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2812 transitions. [2022-01-18 13:35:42,933 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2812 transitions. Word has length 79 [2022-01-18 13:35:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:42,933 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2812 transitions. [2022-01-18 13:35:42,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2812 transitions. [2022-01-18 13:35:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:42,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:42,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:42,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2022-01-18 13:35:42,934 INFO L402 AbstractCegarLoop]: === Iteration 403 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:42,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2060179084, now seen corresponding path program 403 times [2022-01-18 13:35:42,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:42,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30254941] [2022-01-18 13:35:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:42,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:43,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:43,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30254941] [2022-01-18 13:35:43,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30254941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:43,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:43,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:43,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188889777] [2022-01-18 13:35:43,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:43,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:43,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:43,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:43,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:43,244 INFO L87 Difference]: Start difference. First operand 1127 states and 2812 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:44,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:44,356 INFO L93 Difference]: Finished difference Result 1329 states and 3288 transitions. [2022-01-18 13:35:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 13:35:44,356 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:44,358 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 13:35:44,358 INFO L226 Difference]: Without dead ends: 1167 [2022-01-18 13:35:44,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=225, Invalid=2427, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:35:44,358 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 316 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:44,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2585 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 13:35:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-01-18 13:35:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1123. [2022-01-18 13:35:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4964349376114083) internal successors, (2801), 1122 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:44,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2801 transitions. [2022-01-18 13:35:44,368 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2801 transitions. Word has length 79 [2022-01-18 13:35:44,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:44,368 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2801 transitions. [2022-01-18 13:35:44,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:44,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2801 transitions. [2022-01-18 13:35:44,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:44,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:44,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:44,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2022-01-18 13:35:44,369 INFO L402 AbstractCegarLoop]: === Iteration 404 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:44,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1667634104, now seen corresponding path program 404 times [2022-01-18 13:35:44,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:44,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070492870] [2022-01-18 13:35:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:44,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:44,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:44,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070492870] [2022-01-18 13:35:44,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070492870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:44,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:44,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:44,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715931483] [2022-01-18 13:35:44,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:44,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:44,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:44,676 INFO L87 Difference]: Start difference. First operand 1123 states and 2801 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:46,394 INFO L93 Difference]: Finished difference Result 1422 states and 3521 transitions. [2022-01-18 13:35:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:35:46,394 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:46,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:46,396 INFO L225 Difference]: With dead ends: 1422 [2022-01-18 13:35:46,396 INFO L226 Difference]: Without dead ends: 1218 [2022-01-18 13:35:46,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=2827, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 13:35:46,396 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 340 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:46,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2811 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:35:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-01-18 13:35:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1119. [2022-01-18 13:35:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.4955277280858676) internal successors, (2790), 1118 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2790 transitions. [2022-01-18 13:35:46,406 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2790 transitions. Word has length 79 [2022-01-18 13:35:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:46,406 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2790 transitions. [2022-01-18 13:35:46,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2790 transitions. [2022-01-18 13:35:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:46,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:46,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:46,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2022-01-18 13:35:46,407 INFO L402 AbstractCegarLoop]: === Iteration 405 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash -312177498, now seen corresponding path program 405 times [2022-01-18 13:35:46,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:46,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454667511] [2022-01-18 13:35:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:46,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:46,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:46,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454667511] [2022-01-18 13:35:46,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454667511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:46,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:46,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:46,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511264689] [2022-01-18 13:35:46,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:46,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:46,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:46,688 INFO L87 Difference]: Start difference. First operand 1119 states and 2790 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:47,950 INFO L93 Difference]: Finished difference Result 1390 states and 3433 transitions. [2022-01-18 13:35:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 13:35:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:47,952 INFO L225 Difference]: With dead ends: 1390 [2022-01-18 13:35:47,952 INFO L226 Difference]: Without dead ends: 1147 [2022-01-18 13:35:47,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=2623, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:35:47,952 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 311 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:47,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 3200 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 13:35:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-01-18 13:35:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1091. [2022-01-18 13:35:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.5) internal successors, (2725), 1090 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2725 transitions. [2022-01-18 13:35:47,961 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2725 transitions. Word has length 79 [2022-01-18 13:35:47,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:47,961 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2725 transitions. [2022-01-18 13:35:47,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:47,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2725 transitions. [2022-01-18 13:35:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:47,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:47,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:47,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2022-01-18 13:35:47,962 INFO L402 AbstractCegarLoop]: === Iteration 406 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1942357962, now seen corresponding path program 406 times [2022-01-18 13:35:47,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:47,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124481025] [2022-01-18 13:35:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:47,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:48,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:48,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124481025] [2022-01-18 13:35:48,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124481025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:48,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:48,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:48,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587880566] [2022-01-18 13:35:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:48,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:48,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:48,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:48,244 INFO L87 Difference]: Start difference. First operand 1091 states and 2725 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:50,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:50,062 INFO L93 Difference]: Finished difference Result 1401 states and 3507 transitions. [2022-01-18 13:35:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:35:50,062 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:50,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:50,064 INFO L225 Difference]: With dead ends: 1401 [2022-01-18 13:35:50,064 INFO L226 Difference]: Without dead ends: 1271 [2022-01-18 13:35:50,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=286, Invalid=3254, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 13:35:50,064 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 364 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:50,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 2776 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:35:50,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-01-18 13:35:50,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1163. [2022-01-18 13:35:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.508605851979346) internal successors, (2915), 1162 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2915 transitions. [2022-01-18 13:35:50,076 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2915 transitions. Word has length 79 [2022-01-18 13:35:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:50,076 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2915 transitions. [2022-01-18 13:35:50,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2915 transitions. [2022-01-18 13:35:50,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:50,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:50,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:50,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2022-01-18 13:35:50,077 INFO L402 AbstractCegarLoop]: === Iteration 407 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1088966796, now seen corresponding path program 407 times [2022-01-18 13:35:50,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:50,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370371832] [2022-01-18 13:35:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:50,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:50,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:50,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370371832] [2022-01-18 13:35:50,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370371832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:50,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:50,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:50,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703535072] [2022-01-18 13:35:50,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:50,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:50,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:50,374 INFO L87 Difference]: Start difference. First operand 1163 states and 2915 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:52,239 INFO L93 Difference]: Finished difference Result 1400 states and 3498 transitions. [2022-01-18 13:35:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 13:35:52,239 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:52,241 INFO L225 Difference]: With dead ends: 1400 [2022-01-18 13:35:52,241 INFO L226 Difference]: Without dead ends: 1302 [2022-01-18 13:35:52,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:35:52,241 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 290 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:52,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2874 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 13:35:52,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-01-18 13:35:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1167. [2022-01-18 13:35:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.5060034305317322) internal successors, (2922), 1166 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2922 transitions. [2022-01-18 13:35:52,251 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2922 transitions. Word has length 79 [2022-01-18 13:35:52,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:52,251 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2922 transitions. [2022-01-18 13:35:52,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2922 transitions. [2022-01-18 13:35:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:52,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:52,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:52,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2022-01-18 13:35:52,252 INFO L402 AbstractCegarLoop]: === Iteration 408 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1803204074, now seen corresponding path program 408 times [2022-01-18 13:35:52,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:52,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906911075] [2022-01-18 13:35:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:52,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:52,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:52,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906911075] [2022-01-18 13:35:52,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906911075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:52,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:52,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:52,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111981488] [2022-01-18 13:35:52,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:52,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:52,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:52,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:52,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:52,523 INFO L87 Difference]: Start difference. First operand 1167 states and 2922 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:54,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:35:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:55,633 INFO L93 Difference]: Finished difference Result 1383 states and 3449 transitions. [2022-01-18 13:35:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:35:55,633 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:55,634 INFO L225 Difference]: With dead ends: 1383 [2022-01-18 13:35:55,634 INFO L226 Difference]: Without dead ends: 1270 [2022-01-18 13:35:55,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:35:55,635 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 363 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:55,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2569 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 13:35:55,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-01-18 13:35:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1155. [2022-01-18 13:35:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.503466204506066) internal successors, (2889), 1154 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2889 transitions. [2022-01-18 13:35:55,645 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2889 transitions. Word has length 79 [2022-01-18 13:35:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:55,645 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2889 transitions. [2022-01-18 13:35:55,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2889 transitions. [2022-01-18 13:35:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:55,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:55,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:55,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2022-01-18 13:35:55,646 INFO L402 AbstractCegarLoop]: === Iteration 409 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2128652300, now seen corresponding path program 409 times [2022-01-18 13:35:55,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:55,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894602011] [2022-01-18 13:35:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:55,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:55,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:55,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894602011] [2022-01-18 13:35:55,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894602011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:55,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:55,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:35:55,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741659577] [2022-01-18 13:35:55,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:55,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:35:55,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:55,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:35:55,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:35:55,948 INFO L87 Difference]: Start difference. First operand 1155 states and 2889 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:57,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:35:57,919 INFO L93 Difference]: Finished difference Result 1389 states and 3458 transitions. [2022-01-18 13:35:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 13:35:57,919 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:35:57,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:35:57,921 INFO L225 Difference]: With dead ends: 1389 [2022-01-18 13:35:57,921 INFO L226 Difference]: Without dead ends: 1239 [2022-01-18 13:35:57,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 13:35:57,921 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 343 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:35:57,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2678 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 13:35:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-01-18 13:35:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1151. [2022-01-18 13:35:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.502608695652174) internal successors, (2878), 1150 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2878 transitions. [2022-01-18 13:35:57,930 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2878 transitions. Word has length 79 [2022-01-18 13:35:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:35:57,930 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2878 transitions. [2022-01-18 13:35:57,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:35:57,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2878 transitions. [2022-01-18 13:35:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:35:57,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:35:57,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:35:57,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2022-01-18 13:35:57,932 INFO L402 AbstractCegarLoop]: === Iteration 410 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:35:57,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:35:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1304732662, now seen corresponding path program 410 times [2022-01-18 13:35:57,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:35:57,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245656568] [2022-01-18 13:35:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:35:57,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:35:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:35:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:35:58,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:35:58,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245656568] [2022-01-18 13:35:58,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245656568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:35:58,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:35:58,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:35:58,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782214981] [2022-01-18 13:35:58,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:35:58,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:35:58,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:35:58,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:35:58,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:35:58,190 INFO L87 Difference]: Start difference. First operand 1151 states and 2878 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:00,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:00,664 INFO L93 Difference]: Finished difference Result 1378 states and 3425 transitions. [2022-01-18 13:36:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:36:00,665 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:36:00,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:00,666 INFO L225 Difference]: With dead ends: 1378 [2022-01-18 13:36:00,666 INFO L226 Difference]: Without dead ends: 1280 [2022-01-18 13:36:00,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:36:00,667 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 315 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:00,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2449 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 13:36:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-01-18 13:36:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1175. [2022-01-18 13:36:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 2.5008517887563886) internal successors, (2936), 1174 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2936 transitions. [2022-01-18 13:36:00,685 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2936 transitions. Word has length 79 [2022-01-18 13:36:00,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:00,685 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2936 transitions. [2022-01-18 13:36:00,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2936 transitions. [2022-01-18 13:36:00,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:36:00,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:00,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:00,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2022-01-18 13:36:00,686 INFO L402 AbstractCegarLoop]: === Iteration 411 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash 11800230, now seen corresponding path program 411 times [2022-01-18 13:36:00,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:00,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341354259] [2022-01-18 13:36:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:00,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:00,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:00,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341354259] [2022-01-18 13:36:00,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341354259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:36:00,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:36:00,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:36:00,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615404395] [2022-01-18 13:36:00,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:36:00,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:36:00,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:36:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:36:00,951 INFO L87 Difference]: Start difference. First operand 1175 states and 2936 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:03,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:36:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:04,393 INFO L93 Difference]: Finished difference Result 1346 states and 3337 transitions. [2022-01-18 13:36:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:36:04,394 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:36:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:04,395 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 13:36:04,395 INFO L226 Difference]: Without dead ends: 1187 [2022-01-18 13:36:04,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=2508, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:36:04,396 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 313 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:04,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2647 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1000 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 13:36:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-01-18 13:36:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1127. [2022-01-18 13:36:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5008880994671405) internal successors, (2816), 1126 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-01-18 13:36:04,411 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-01-18 13:36:04,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:04,411 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-01-18 13:36:04,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:04,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-01-18 13:36:04,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:36:04,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:04,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:04,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2022-01-18 13:36:04,412 INFO L402 AbstractCegarLoop]: === Iteration 412 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:04,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:04,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2010998772, now seen corresponding path program 412 times [2022-01-18 13:36:04,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:04,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383898252] [2022-01-18 13:36:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:04,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:04,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:04,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383898252] [2022-01-18 13:36:04,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383898252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:36:04,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:36:04,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:36:04,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632090427] [2022-01-18 13:36:04,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:36:04,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:36:04,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:36:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:36:04,674 INFO L87 Difference]: Start difference. First operand 1127 states and 2816 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:06,552 INFO L93 Difference]: Finished difference Result 1333 states and 3316 transitions. [2022-01-18 13:36:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 13:36:06,552 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:36:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:06,554 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 13:36:06,554 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 13:36:06,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=2320, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 13:36:06,554 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 302 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:06,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2382 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 13:36:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 13:36:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1151. [2022-01-18 13:36:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.502608695652174) internal successors, (2878), 1150 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:06,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2878 transitions. [2022-01-18 13:36:06,564 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2878 transitions. Word has length 79 [2022-01-18 13:36:06,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:06,564 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2878 transitions. [2022-01-18 13:36:06,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:06,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2878 transitions. [2022-01-18 13:36:06,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:36:06,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:06,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:06,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2022-01-18 13:36:06,565 INFO L402 AbstractCegarLoop]: === Iteration 413 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:06,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1917074094, now seen corresponding path program 413 times [2022-01-18 13:36:06,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:06,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097655699] [2022-01-18 13:36:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:06,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:06,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097655699] [2022-01-18 13:36:06,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097655699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:36:06,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:36:06,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:36:06,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959773723] [2022-01-18 13:36:06,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:36:06,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:36:06,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:06,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:36:06,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:36:06,824 INFO L87 Difference]: Start difference. First operand 1151 states and 2878 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:09,117 INFO L93 Difference]: Finished difference Result 1344 states and 3340 transitions. [2022-01-18 13:36:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:36:09,118 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:36:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:09,119 INFO L225 Difference]: With dead ends: 1344 [2022-01-18 13:36:09,119 INFO L226 Difference]: Without dead ends: 1246 [2022-01-18 13:36:09,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=2508, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:36:09,120 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 311 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:09,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2349 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 13:36:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-01-18 13:36:09,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1155. [2022-01-18 13:36:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.5) internal successors, (2885), 1154 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-01-18 13:36:09,129 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-01-18 13:36:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:09,129 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-01-18 13:36:09,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-01-18 13:36:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:36:09,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:09,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:09,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2022-01-18 13:36:09,131 INFO L402 AbstractCegarLoop]: === Iteration 414 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:09,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1663655924, now seen corresponding path program 414 times [2022-01-18 13:36:09,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:09,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154534065] [2022-01-18 13:36:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:09,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:09,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:09,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154534065] [2022-01-18 13:36:09,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154534065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:36:09,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:36:09,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:36:09,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336273207] [2022-01-18 13:36:09,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:36:09,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:36:09,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:36:09,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:36:09,427 INFO L87 Difference]: Start difference. First operand 1155 states and 2885 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:11,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:36:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:12,432 INFO L93 Difference]: Finished difference Result 1312 states and 3256 transitions. [2022-01-18 13:36:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:36:12,432 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:36:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:12,434 INFO L225 Difference]: With dead ends: 1312 [2022-01-18 13:36:12,434 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 13:36:12,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 13:36:12,434 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 303 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:12,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2280 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 13:36:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 13:36:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1147. [2022-01-18 13:36:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.5017452006980805) internal successors, (2867), 1146 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2867 transitions. [2022-01-18 13:36:12,444 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2867 transitions. Word has length 79 [2022-01-18 13:36:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:12,444 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2867 transitions. [2022-01-18 13:36:12,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2867 transitions. [2022-01-18 13:36:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:36:12,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:12,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:12,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2022-01-18 13:36:12,446 INFO L402 AbstractCegarLoop]: === Iteration 415 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1192965110, now seen corresponding path program 415 times [2022-01-18 13:36:12,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:12,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053656929] [2022-01-18 13:36:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:12,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:12,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:12,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053656929] [2022-01-18 13:36:12,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053656929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:36:12,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:36:12,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:36:12,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636480480] [2022-01-18 13:36:12,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:36:12,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:36:12,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:12,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:36:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:36:12,709 INFO L87 Difference]: Start difference. First operand 1147 states and 2867 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:14,994 INFO L93 Difference]: Finished difference Result 1366 states and 3392 transitions. [2022-01-18 13:36:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 13:36:14,994 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:36:14,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:14,996 INFO L225 Difference]: With dead ends: 1366 [2022-01-18 13:36:14,996 INFO L226 Difference]: Without dead ends: 1268 [2022-01-18 13:36:14,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=2604, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 13:36:14,996 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 295 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:14,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2526 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 13:36:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-01-18 13:36:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1171. [2022-01-18 13:36:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 2.5) internal successors, (2925), 1170 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2925 transitions. [2022-01-18 13:36:15,006 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2925 transitions. Word has length 79 [2022-01-18 13:36:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:15,007 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 2925 transitions. [2022-01-18 13:36:15,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2925 transitions. [2022-01-18 13:36:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:36:15,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:15,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:15,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2022-01-18 13:36:15,008 INFO L402 AbstractCegarLoop]: === Iteration 416 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:15,008 INFO L85 PathProgramCache]: Analyzing trace with hash 123567782, now seen corresponding path program 416 times [2022-01-18 13:36:15,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:15,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916114692] [2022-01-18 13:36:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:15,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:15,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:15,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916114692] [2022-01-18 13:36:15,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916114692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:36:15,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:36:15,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 13:36:15,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808335089] [2022-01-18 13:36:15,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:36:15,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 13:36:15,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 13:36:15,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 13:36:15,272 INFO L87 Difference]: Start difference. First operand 1171 states and 2925 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:16,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:16,760 INFO L93 Difference]: Finished difference Result 1334 states and 3304 transitions. [2022-01-18 13:36:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 13:36:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:36:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:16,762 INFO L225 Difference]: With dead ends: 1334 [2022-01-18 13:36:16,762 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 13:36:16,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=2506, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 13:36:16,763 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 295 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:16,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2376 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 13:36:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 13:36:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1139. [2022-01-18 13:36:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.5) internal successors, (2845), 1138 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2845 transitions. [2022-01-18 13:36:16,773 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2845 transitions. Word has length 79 [2022-01-18 13:36:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:16,773 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2845 transitions. [2022-01-18 13:36:16,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2845 transitions. [2022-01-18 13:36:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:36:16,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:16,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:16,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2022-01-18 13:36:16,774 INFO L402 AbstractCegarLoop]: === Iteration 417 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash -359081240, now seen corresponding path program 417 times [2022-01-18 13:36:16,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:16,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017810135] [2022-01-18 13:36:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:16,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:17,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:17,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017810135] [2022-01-18 13:36:17,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017810135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:36:17,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:36:17,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:36:17,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908338711] [2022-01-18 13:36:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:36:17,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:36:17,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:17,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:36:17,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:36:17,066 INFO L87 Difference]: Start difference. First operand 1139 states and 2845 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:36:18,763 INFO L93 Difference]: Finished difference Result 1394 states and 3465 transitions. [2022-01-18 13:36:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 13:36:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 13:36:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:36:18,764 INFO L225 Difference]: With dead ends: 1394 [2022-01-18 13:36:18,764 INFO L226 Difference]: Without dead ends: 1296 [2022-01-18 13:36:18,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 13:36:18,765 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 297 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:18,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2910 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 13:36:18,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-01-18 13:36:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1167. [2022-01-18 13:36:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 1166 states have (on average 2.4991423670668955) internal successors, (2914), 1166 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2914 transitions. [2022-01-18 13:36:18,775 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2914 transitions. Word has length 79 [2022-01-18 13:36:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:36:18,775 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2914 transitions. [2022-01-18 13:36:18,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:36:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2914 transitions. [2022-01-18 13:36:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 13:36:18,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:36:18,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:36:18,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2022-01-18 13:36:18,776 INFO L402 AbstractCegarLoop]: === Iteration 418 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 13:36:18,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:36:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash 957451652, now seen corresponding path program 418 times [2022-01-18 13:36:18,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:36:18,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230062536] [2022-01-18 13:36:18,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:36:18,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:36:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:36:19,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:36:19,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:36:19,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230062536] [2022-01-18 13:36:19,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230062536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:36:19,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:36:19,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 13:36:19,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955085287] [2022-01-18 13:36:19,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:36:19,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 13:36:19,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:36:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 13:36:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 13:36:19,040 INFO L87 Difference]: Start difference. First operand 1167 states and 2914 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 13:36:21,080 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 13:36:21,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 13:36:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 13:36:21,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 13:36:21,938 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 130 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 13:36:21,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1487 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 580 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 13:36:21,939 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 13:36:21,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2022-01-18 13:36:21,939 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1167states) and FLOYD_HOARE automaton (currently 21 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. [2022-01-18 13:36:21,941 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 13:36:21,941 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 13:36:21,943 INFO L732 BasicCegarLoop]: Path program histogram: [418] [2022-01-18 13:36:21,944 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:36:21,944 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:36:21,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:36:21 BasicIcfg [2022-01-18 13:36:21,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:36:21,946 INFO L158 Benchmark]: Toolchain (without parser) took 783219.25ms. Allocated memory was 388.0MB in the beginning and 559.9MB in the end (delta: 172.0MB). Free memory was 333.9MB in the beginning and 457.6MB in the end (delta: -123.7MB). Peak memory consumption was 49.6MB. Max. memory is 16.0GB. [2022-01-18 13:36:21,946 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory is still 350.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:36:21,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.68ms. Allocated memory was 388.0MB in the beginning and 465.6MB in the end (delta: 77.6MB). Free memory was 333.8MB in the beginning and 438.4MB in the end (delta: -104.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. [2022-01-18 13:36:21,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.63ms. Allocated memory is still 465.6MB. Free memory was 438.4MB in the beginning and 436.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:36:21,946 INFO L158 Benchmark]: Boogie Preprocessor took 12.03ms. Allocated memory is still 465.6MB. Free memory was 436.3MB in the beginning and 435.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:36:21,946 INFO L158 Benchmark]: RCFGBuilder took 253.52ms. Allocated memory is still 465.6MB. Free memory was 435.3MB in the beginning and 421.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 13:36:21,946 INFO L158 Benchmark]: TraceAbstraction took 782712.13ms. Allocated memory was 465.6MB in the beginning and 559.9MB in the end (delta: 94.4MB). Free memory was 421.6MB in the beginning and 457.6MB in the end (delta: -35.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.0GB. [2022-01-18 13:36:21,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory is still 350.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 216.68ms. Allocated memory was 388.0MB in the beginning and 465.6MB in the end (delta: 77.6MB). Free memory was 333.8MB in the beginning and 438.4MB in the end (delta: -104.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.63ms. Allocated memory is still 465.6MB. Free memory was 438.4MB in the beginning and 436.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 12.03ms. Allocated memory is still 465.6MB. Free memory was 436.3MB in the beginning and 435.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 253.52ms. Allocated memory is still 465.6MB. Free memory was 435.3MB in the beginning and 421.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 782712.13ms. Allocated memory was 465.6MB in the beginning and 559.9MB in the end (delta: 94.4MB). Free memory was 421.6MB in the beginning and 457.6MB in the end (delta: -35.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (1167states) and FLOYD_HOARE automaton (currently 21 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1167states) and FLOYD_HOARE automaton (currently 21 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (1167states) and FLOYD_HOARE automaton (currently 21 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 125 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 782.6s, OverallIterations: 418, TraceHistogramMax: 1, PathProgramHistogramMax: 418, EmptinessCheckTime: 0.5s, AutomataDifference: 659.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 45 mSolverCounterUnknown, 129233 SdHoareTripleChecker+Valid, 434.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129233 mSDsluCounter, 1131853 SdHoareTripleChecker+Invalid, 403.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1110451 mSDsCounter, 14956 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 435626 IncrementalHoareTripleChecker+Invalid, 450627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14956 mSolverCounterUnsat, 75449 mSDtfsCounter, 435626 mSolverCounterSat, 1.6s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22907 GetRequests, 868 SyntacticMatches, 1087 SemanticMatches, 20951 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236219 ImplicationChecksByTransitivity, 300.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=333, InterpolantAutomatonStates: 17485, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 417 MinimizatonAttempts, 39603 StatesRemovedByMinimization, 414 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 113.2s InterpolantComputationTime, 33022 NumberOfCodeBlocks, 33022 NumberOfCodeBlocksAsserted, 418 NumberOfCheckSat, 32604 ConstructedInterpolants, 0 QuantifiedInterpolants, 536072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 418 InterpolantComputations, 418 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown