/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.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 03:08:37,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:08:37,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:08:37,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 03:08:37,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 03:08:37,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 03:08:37,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 03:08:37,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 03:08:37,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 03:08:37,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 03:08:37,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 03:08:37,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 03:08:37,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 03:08:37,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 03:08:37,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 03:08:37,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 03:08:37,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 03:08:37,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 03:08:37,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 03:08:37,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 03:08:37,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 03:08:37,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 03:08:37,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 03:08:37,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 03:08:37,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 03:08:37,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 03:08:37,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 03:08:37,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 03:08:37,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 03:08:37,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 03:08:37,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 03:08:37,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 03:08:37,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 03:08:37,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 03:08:37,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 03:08:37,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 03:08:37,916 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.epf [2022-01-18 03:08:37,935 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:08:37,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:08:37,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:08:37,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:08:37,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:08:37,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:08:37,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:08:37,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:08:37,943 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:08:37,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:08:37,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:08:37,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:08:37,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:08:37,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:08:37,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:08:37,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:08:37,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:08:37,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:08:37,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:08:37,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:08:37,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:08:37,946 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:08:37,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:08:37,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:08:38,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:08:38,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:08:38,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:08:38,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 03:08:38,122 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 03:08:38,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-01-18 03:08:38,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f7de4fd/edfb9a1d0ce346b7b9cf2cf3d6d5c04f/FLAG16de58f75 [2022-01-18 03:08:38,541 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 03:08:38,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c [2022-01-18 03:08:38,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f7de4fd/edfb9a1d0ce346b7b9cf2cf3d6d5c04f/FLAG16de58f75 [2022-01-18 03:08:38,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f7de4fd/edfb9a1d0ce346b7b9cf2cf3d6d5c04f [2022-01-18 03:08:38,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:08:38,951 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 03:08:38,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 03:08:38,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 03:08:38,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 03:08:38,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 03:08:38" (1/1) ... [2022-01-18 03:08:38,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129b128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:38, skipping insertion in model container [2022-01-18 03:08:38,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 03:08:38" (1/1) ... [2022-01-18 03:08:38,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 03:08:38,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 03:08:39,102 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 03:08:39,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 03:08:39,109 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 03:08:39,120 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 03:08:39,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 03:08:39,132 INFO L208 MainTranslator]: Completed translation [2022-01-18 03:08:39,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39 WrapperNode [2022-01-18 03:08:39,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 03:08:39,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:08:39,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:08:39,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:08:39,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,166 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-01-18 03:08:39,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:08:39,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:08:39,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:08:39,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:08:39,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:08:39,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:08:39,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:08:39,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:08:39,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (1/1) ... [2022-01-18 03:08:39,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:08:39,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:08:39,211 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 03:08:39,235 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 03:08:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 03:08:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 03:08:39,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 03:08:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 03:08:39,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 03:08:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 03:08:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 03:08:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 03:08:39,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:08:39,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:08:39,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 03:08:39,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 03:08:39,248 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 03:08:39,312 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:08:39,313 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:08:39,448 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:08:39,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:08:39,454 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 03:08:39,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:08:39 BoogieIcfgContainer [2022-01-18 03:08:39,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:08:39,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:08:39,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:08:39,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:08:39,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 03:08:38" (1/3) ... [2022-01-18 03:08:39,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a775b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:08:39, skipping insertion in model container [2022-01-18 03:08:39,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:08:39" (2/3) ... [2022-01-18 03:08:39,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a775b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:08:39, skipping insertion in model container [2022-01-18 03:08:39,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:08:39" (3/3) ... [2022-01-18 03:08:39,461 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-01-18 03:08:39,464 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:08:39,464 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:08:39,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:08:39,464 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:08:39,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,493 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,494 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,495 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,497 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,497 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,497 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,497 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,497 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,497 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,499 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,500 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,504 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,506 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,506 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,507 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,507 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,507 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,507 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:08:39,510 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 03:08:39,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:08:39,542 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 03:08:39,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 03:08:39,551 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 94 transitions, 204 flow [2022-01-18 03:08:39,615 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 03:08:39,620 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 03:08:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:39,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:39,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:08:39,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:39,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1017608608, now seen corresponding path program 1 times [2022-01-18 03:08:39,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:39,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477597327] [2022-01-18 03:08:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:39,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:08:40,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:40,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477597327] [2022-01-18 03:08:40,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477597327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:40,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:40,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:08:40,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320439042] [2022-01-18 03:08:40,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:40,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:08:40,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:08:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:08:40,527 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 03:08:41,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:41,625 INFO L93 Difference]: Finished difference Result 1343 states and 3319 transitions. [2022-01-18 03:08:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:08:41,627 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 03:08:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:41,647 INFO L225 Difference]: With dead ends: 1343 [2022-01-18 03:08:41,647 INFO L226 Difference]: Without dead ends: 1210 [2022-01-18 03:08:41,649 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 03:08:41,652 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, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:41,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2241 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:08:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-01-18 03:08:41,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1154. [2022-01-18 03:08:41,720 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 03:08:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 2867 transitions. [2022-01-18 03:08:41,724 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 2867 transitions. Word has length 79 [2022-01-18 03:08:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:41,725 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 2867 transitions. [2022-01-18 03:08:41,725 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 03:08:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 2867 transitions. [2022-01-18 03:08:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:41,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:41,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:08:41,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:08:41,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1384503038, now seen corresponding path program 2 times [2022-01-18 03:08:41,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:41,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079252698] [2022-01-18 03:08:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:41,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:42,207 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 03:08:42,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:42,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079252698] [2022-01-18 03:08:42,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079252698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:42,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:42,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:08:42,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984248909] [2022-01-18 03:08:42,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:42,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:08:42,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:42,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:08:42,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:08:42,210 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 03:08:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:43,146 INFO L93 Difference]: Finished difference Result 1335 states and 3296 transitions. [2022-01-18 03:08:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:08:43,147 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 03:08:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:43,152 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 03:08:43,152 INFO L226 Difference]: Without dead ends: 1237 [2022-01-18 03:08:43,153 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 03:08:43,154 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 281 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:43,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2439 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:08:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-01-18 03:08:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1158. [2022-01-18 03:08:43,177 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 03:08:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2874 transitions. [2022-01-18 03:08:43,180 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2874 transitions. Word has length 79 [2022-01-18 03:08:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:43,182 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2874 transitions. [2022-01-18 03:08:43,182 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 03:08:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2874 transitions. [2022-01-18 03:08:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:43,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:43,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:08:43,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:08:43,185 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash -670265760, now seen corresponding path program 3 times [2022-01-18 03:08:43,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:43,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141612427] [2022-01-18 03:08:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:43,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:43,601 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 03:08:43,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:43,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141612427] [2022-01-18 03:08:43,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141612427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:43,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:43,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:08:43,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104498165] [2022-01-18 03:08:43,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:43,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:08:43,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:08:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:08:43,603 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 03:08:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:44,535 INFO L93 Difference]: Finished difference Result 1303 states and 3212 transitions. [2022-01-18 03:08:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:08:44,535 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 03:08:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:44,540 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 03:08:44,540 INFO L226 Difference]: Without dead ends: 1190 [2022-01-18 03:08:44,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 03:08:44,546 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:44,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 2614 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:08:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-01-18 03:08:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1146. [2022-01-18 03:08:44,566 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 03:08:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2845 transitions. [2022-01-18 03:08:44,569 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2845 transitions. Word has length 79 [2022-01-18 03:08:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:44,571 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2845 transitions. [2022-01-18 03:08:44,571 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 03:08:44,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2845 transitions. [2022-01-18 03:08:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:44,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:44,574 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 03:08:44,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:08:44,574 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:44,575 INFO L85 PathProgramCache]: Analyzing trace with hash -199574946, now seen corresponding path program 4 times [2022-01-18 03:08:44,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:44,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863274224] [2022-01-18 03:08:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:44,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:08:44,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:44,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863274224] [2022-01-18 03:08:44,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863274224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:44,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:44,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:08:44,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095986445] [2022-01-18 03:08:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:44,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:08:44,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:44,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:08:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:08:44,969 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 03:08:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:45,910 INFO L93 Difference]: Finished difference Result 1353 states and 3337 transitions. [2022-01-18 03:08:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:08:45,910 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 03:08:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:45,914 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 03:08:45,914 INFO L226 Difference]: Without dead ends: 1255 [2022-01-18 03:08:45,915 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 03:08:45,916 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:45,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2743 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:08:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2022-01-18 03:08:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1170. [2022-01-18 03:08:45,932 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 03:08:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-01-18 03:08:45,935 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-01-18 03:08:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:45,935 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-01-18 03:08:45,935 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 03:08:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-01-18 03:08:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:45,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:45,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:08:45,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 03:08:45,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:45,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1116957946, now seen corresponding path program 5 times [2022-01-18 03:08:45,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:45,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028742482] [2022-01-18 03:08:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:45,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:46,221 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 03:08:46,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:46,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028742482] [2022-01-18 03:08:46,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028742482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:46,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:46,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:08:46,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296481259] [2022-01-18 03:08:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:46,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:08:46,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:08:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:08:46,223 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 03:08:47,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:47,146 INFO L93 Difference]: Finished difference Result 1321 states and 3249 transitions. [2022-01-18 03:08:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:08:47,146 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 03:08:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:47,149 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 03:08:47,150 INFO L226 Difference]: Without dead ends: 1170 [2022-01-18 03:08:47,150 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 03:08:47,151 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 265 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:47,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 2713 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:08:47,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-01-18 03:08:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1130. [2022-01-18 03:08:47,174 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 03:08:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2801 transitions. [2022-01-18 03:08:47,177 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2801 transitions. Word has length 79 [2022-01-18 03:08:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:47,177 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2801 transitions. [2022-01-18 03:08:47,177 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 03:08:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2801 transitions. [2022-01-18 03:08:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:47,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:47,179 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 03:08:47,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 03:08:47,180 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:47,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:47,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1084540196, now seen corresponding path program 6 times [2022-01-18 03:08:47,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:47,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145082850] [2022-01-18 03:08:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:47,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:47,482 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 03:08:47,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:47,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145082850] [2022-01-18 03:08:47,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145082850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:47,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:47,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:08:47,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44466182] [2022-01-18 03:08:47,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:47,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:08:47,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:08:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:08:47,484 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 03:08:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:49,256 INFO L93 Difference]: Finished difference Result 1388 states and 3423 transitions. [2022-01-18 03:08:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:08:49,257 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 03:08:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:49,261 INFO L225 Difference]: With dead ends: 1388 [2022-01-18 03:08:49,261 INFO L226 Difference]: Without dead ends: 1290 [2022-01-18 03:08:49,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=2143, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:08:49,262 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 03:08:49,263 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 03:08:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-01-18 03:08:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1158. [2022-01-18 03:08:49,289 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 03:08:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-01-18 03:08:49,292 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-01-18 03:08:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:49,293 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-01-18 03:08:49,293 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 03:08:49,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-01-18 03:08:49,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:49,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:49,295 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 03:08:49,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 03:08:49,295 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:49,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash 231992696, now seen corresponding path program 7 times [2022-01-18 03:08:49,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:49,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611242562] [2022-01-18 03:08:49,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:49,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:08:49,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:49,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611242562] [2022-01-18 03:08:49,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611242562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:49,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:49,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:08:49,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580191041] [2022-01-18 03:08:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:49,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:08:49,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:08:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:08:49,629 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 03:08:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:50,664 INFO L93 Difference]: Finished difference Result 1344 states and 3306 transitions. [2022-01-18 03:08:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:08:50,665 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 03:08:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:50,669 INFO L225 Difference]: With dead ends: 1344 [2022-01-18 03:08:50,669 INFO L226 Difference]: Without dead ends: 1209 [2022-01-18 03:08:50,670 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 03:08:50,670 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:50,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2740 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:08:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-01-18 03:08:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1134. [2022-01-18 03:08:50,687 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 03:08:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2808 transitions. [2022-01-18 03:08:50,689 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2808 transitions. Word has length 79 [2022-01-18 03:08:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:50,689 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2808 transitions. [2022-01-18 03:08:50,689 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 03:08:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2808 transitions. [2022-01-18 03:08:50,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:50,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:50,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:08:50,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 03:08:50,691 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:50,692 INFO L85 PathProgramCache]: Analyzing trace with hash -898522334, now seen corresponding path program 8 times [2022-01-18 03:08:50,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:50,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128760832] [2022-01-18 03:08:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:50,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:08:51,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:51,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128760832] [2022-01-18 03:08:51,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128760832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:51,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:51,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:08:51,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846566168] [2022-01-18 03:08:51,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:51,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:08:51,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:08:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:08:51,010 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 03:08:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:51,798 INFO L93 Difference]: Finished difference Result 1332 states and 3273 transitions. [2022-01-18 03:08:51,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:08:51,798 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 03:08:51,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:51,802 INFO L225 Difference]: With dead ends: 1332 [2022-01-18 03:08:51,802 INFO L226 Difference]: Without dead ends: 1162 [2022-01-18 03:08:51,803 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 03:08:51,803 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, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:51,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2526 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:08:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-18 03:08:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1122. [2022-01-18 03:08:51,818 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 03:08:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2779 transitions. [2022-01-18 03:08:51,819 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2779 transitions. Word has length 79 [2022-01-18 03:08:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:51,820 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2779 transitions. [2022-01-18 03:08:51,820 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 03:08:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2779 transitions. [2022-01-18 03:08:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:51,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:51,822 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 03:08:51,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 03:08:51,822 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:51,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1397240348, now seen corresponding path program 9 times [2022-01-18 03:08:51,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:51,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323194931] [2022-01-18 03:08:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:51,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:08:52,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:52,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323194931] [2022-01-18 03:08:52,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323194931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:52,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:52,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:08:52,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810311401] [2022-01-18 03:08:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:52,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:08:52,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:08:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:08:52,128 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 03:08:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:53,351 INFO L93 Difference]: Finished difference Result 1386 states and 3409 transitions. [2022-01-18 03:08:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:08:53,352 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 03:08:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:53,356 INFO L225 Difference]: With dead ends: 1386 [2022-01-18 03:08:53,356 INFO L226 Difference]: Without dead ends: 1288 [2022-01-18 03:08:53,357 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 03:08:53,357 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 03:08:53,357 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 03:08:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-01-18 03:08:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1170. [2022-01-18 03:08:53,375 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 03:08:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-01-18 03:08:53,377 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-01-18 03:08:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:53,377 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-01-18 03:08:53,377 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 03:08:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-01-18 03:08:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:53,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:53,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:08:53,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 03:08:53,380 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -80707456, now seen corresponding path program 10 times [2022-01-18 03:08:53,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:53,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619273677] [2022-01-18 03:08:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:53,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:08:53,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:53,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619273677] [2022-01-18 03:08:53,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619273677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:53,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:53,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:08:53,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255536182] [2022-01-18 03:08:53,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:53,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:08:53,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:53,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:08:53,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:08:53,650 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 03:08:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:54,647 INFO L93 Difference]: Finished difference Result 1354 states and 3321 transitions. [2022-01-18 03:08:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:08:54,648 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 03:08:54,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:54,651 INFO L225 Difference]: With dead ends: 1354 [2022-01-18 03:08:54,651 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 03:08:54,652 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 03:08:54,652 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:54,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2892 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:08:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 03:08:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1146. [2022-01-18 03:08:54,666 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 03:08:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-01-18 03:08:54,668 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-01-18 03:08:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:54,668 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-01-18 03:08:54,668 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 03:08:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-01-18 03:08:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:54,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:54,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:08:54,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 03:08:54,671 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:54,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1448713020, now seen corresponding path program 11 times [2022-01-18 03:08:54,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:54,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502866508] [2022-01-18 03:08:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:54,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:08:54,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:54,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502866508] [2022-01-18 03:08:54,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502866508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:54,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:54,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:08:54,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511111578] [2022-01-18 03:08:54,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:54,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:08:54,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:54,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:08:54,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:08:54,993 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 03:08:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:55,833 INFO L93 Difference]: Finished difference Result 1330 states and 3255 transitions. [2022-01-18 03:08:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:08:55,834 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 03:08:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:55,837 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 03:08:55,837 INFO L226 Difference]: Without dead ends: 1134 [2022-01-18 03:08:55,838 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 03:08:55,838 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 272 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 03:08:55,839 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 03:08:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-01-18 03:08:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1106. [2022-01-18 03:08:55,851 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 03:08:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 2735 transitions. [2022-01-18 03:08:55,853 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 2735 transitions. Word has length 79 [2022-01-18 03:08:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:55,853 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 2735 transitions. [2022-01-18 03:08:55,853 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 03:08:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 2735 transitions. [2022-01-18 03:08:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:08:55,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:55,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:08:55,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 03:08:55,855 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:55,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2094552796, now seen corresponding path program 12 times [2022-01-18 03:08:55,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:55,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880342907] [2022-01-18 03:08:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:55,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:08:56,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:56,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880342907] [2022-01-18 03:08:56,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880342907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:08:56,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:08:56,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:08:56,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230233164] [2022-01-18 03:08:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:08:56,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:08:56,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:08:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:08:56,169 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 03:08:58,952 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 03:09:01,062 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 03:09:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:01,714 INFO L93 Difference]: Finished difference Result 1433 states and 3528 transitions. [2022-01-18 03:09:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:09:01,714 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 03:09:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:01,718 INFO L225 Difference]: With dead ends: 1433 [2022-01-18 03:09:01,718 INFO L226 Difference]: Without dead ends: 1335 [2022-01-18 03:09:01,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=2845, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:09:01,720 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 335 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:01,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 3382 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1307 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-01-18 03:09:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2022-01-18 03:09:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1158. [2022-01-18 03:09:01,744 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 03:09:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-01-18 03:09:01,746 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-01-18 03:09:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:01,746 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-01-18 03:09:01,747 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 03:09:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-01-18 03:09:01,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:01,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:01,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:01,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 03:09:01,751 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -778019904, now seen corresponding path program 13 times [2022-01-18 03:09:01,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:01,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112212793] [2022-01-18 03:09:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:01,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:02,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:02,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112212793] [2022-01-18 03:09:02,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112212793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:02,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:02,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:02,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713751751] [2022-01-18 03:09:02,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:02,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:02,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:02,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:02,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:02,108 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 03:09:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:03,352 INFO L93 Difference]: Finished difference Result 1389 states and 3411 transitions. [2022-01-18 03:09:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:09:03,353 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 03:09:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:03,357 INFO L225 Difference]: With dead ends: 1389 [2022-01-18 03:09:03,357 INFO L226 Difference]: Without dead ends: 1254 [2022-01-18 03:09:03,357 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 03:09:03,358 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 331 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:03,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 3195 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:09:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-01-18 03:09:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1134. [2022-01-18 03:09:03,371 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 03:09:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-01-18 03:09:03,373 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-01-18 03:09:03,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:03,373 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-01-18 03:09:03,373 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 03:09:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-01-18 03:09:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:03,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:03,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:03,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 03:09:03,375 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2146025468, now seen corresponding path program 14 times [2022-01-18 03:09:03,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:03,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976573989] [2022-01-18 03:09:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:03,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:03,644 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 03:09:03,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:03,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976573989] [2022-01-18 03:09:03,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976573989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:03,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:03,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:09:03,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831894744] [2022-01-18 03:09:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:03,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:09:03,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:09:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:09:03,645 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 03:09:04,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:04,607 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-01-18 03:09:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:09:04,608 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 03:09:04,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:04,611 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 03:09:04,611 INFO L226 Difference]: Without dead ends: 1173 [2022-01-18 03:09:04,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=2067, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:09:04,612 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 03:09:04,613 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 03:09:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-01-18 03:09:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1110. [2022-01-18 03:09:04,625 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 03:09:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2742 transitions. [2022-01-18 03:09:04,627 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2742 transitions. Word has length 79 [2022-01-18 03:09:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:04,627 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2742 transitions. [2022-01-18 03:09:04,627 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 03:09:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2742 transitions. [2022-01-18 03:09:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:04,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:04,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:04,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 03:09:04,629 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash -160533348, now seen corresponding path program 15 times [2022-01-18 03:09:04,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:04,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427472379] [2022-01-18 03:09:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:04,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:04,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:04,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427472379] [2022-01-18 03:09:04,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427472379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:04,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:04,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:09:04,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547958676] [2022-01-18 03:09:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:04,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:09:04,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:09:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:09:04,918 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 03:09:05,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:05,711 INFO L93 Difference]: Finished difference Result 1353 states and 3312 transitions. [2022-01-18 03:09:05,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:09:05,711 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 03:09:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:05,715 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 03:09:05,717 INFO L226 Difference]: Without dead ends: 1126 [2022-01-18 03:09:05,718 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 03:09:05,718 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, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:05,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2474 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:09:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-01-18 03:09:05,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1098. [2022-01-18 03:09:05,731 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 03:09:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 2713 transitions. [2022-01-18 03:09:05,733 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 2713 transitions. Word has length 79 [2022-01-18 03:09:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:05,733 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 2713 transitions. [2022-01-18 03:09:05,733 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 03:09:05,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 2713 transitions. [2022-01-18 03:09:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:05,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:05,735 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 03:09:05,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 03:09:05,735 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1307346012, now seen corresponding path program 16 times [2022-01-18 03:09:05,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:05,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448687138] [2022-01-18 03:09:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:05,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:06,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:06,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448687138] [2022-01-18 03:09:06,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448687138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:06,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:06,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:06,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489142077] [2022-01-18 03:09:06,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:06,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:06,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:06,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:06,031 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 03:09:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:07,934 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-01-18 03:09:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:09:07,934 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 03:09:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:07,940 INFO L225 Difference]: With dead ends: 1419 [2022-01-18 03:09:07,941 INFO L226 Difference]: Without dead ends: 1321 [2022-01-18 03:09:07,941 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 03:09:07,942 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 340 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:07,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 3108 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 03:09:07,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-01-18 03:09:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1170. [2022-01-18 03:09:07,970 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 03:09:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2903 transitions. [2022-01-18 03:09:07,972 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2903 transitions. Word has length 79 [2022-01-18 03:09:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:07,972 INFO L470 AbstractCegarLoop]: Abstraction has 1170 states and 2903 transitions. [2022-01-18 03:09:07,972 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 03:09:07,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2903 transitions. [2022-01-18 03:09:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:07,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:07,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:07,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 03:09:07,974 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:07,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1671088392, now seen corresponding path program 17 times [2022-01-18 03:09:07,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:07,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465149879] [2022-01-18 03:09:07,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:07,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:08,264 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 03:09:08,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:08,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465149879] [2022-01-18 03:09:08,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465149879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:08,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:08,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:08,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177931932] [2022-01-18 03:09:08,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:08,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:08,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:08,266 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 03:09:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:09,610 INFO L93 Difference]: Finished difference Result 1387 states and 3393 transitions. [2022-01-18 03:09:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:09:09,610 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 03:09:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:09,613 INFO L225 Difference]: With dead ends: 1387 [2022-01-18 03:09:09,613 INFO L226 Difference]: Without dead ends: 1252 [2022-01-18 03:09:09,614 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 03:09:09,614 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 324 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:09,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 3078 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:09:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-01-18 03:09:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1146. [2022-01-18 03:09:09,627 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 03:09:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2837 transitions. [2022-01-18 03:09:09,628 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2837 transitions. Word has length 79 [2022-01-18 03:09:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:09,629 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 2837 transitions. [2022-01-18 03:09:09,629 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 03:09:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2837 transitions. [2022-01-18 03:09:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:09,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:09,630 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 03:09:09,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 03:09:09,631 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:09,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:09,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1255873340, now seen corresponding path program 18 times [2022-01-18 03:09:09,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:09,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890713300] [2022-01-18 03:09:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:09,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:09,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:09,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890713300] [2022-01-18 03:09:09,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890713300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:09,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:09,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:09:09,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227242563] [2022-01-18 03:09:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:09,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:09:09,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:09:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:09:09,916 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 03:09:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:10,914 INFO L93 Difference]: Finished difference Result 1363 states and 3327 transitions. [2022-01-18 03:09:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:09:10,914 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 03:09:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:10,916 INFO L225 Difference]: With dead ends: 1363 [2022-01-18 03:09:10,916 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 03:09:10,916 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 03:09:10,917 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:10,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 3004 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:09:10,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 03:09:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1122. [2022-01-18 03:09:10,928 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 03:09:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 2771 transitions. [2022-01-18 03:09:10,930 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 2771 transitions. Word has length 79 [2022-01-18 03:09:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:10,930 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 2771 transitions. [2022-01-18 03:09:10,930 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 03:09:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 2771 transitions. [2022-01-18 03:09:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:10,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:10,932 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 03:09:10,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 03:09:10,932 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:10,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1848559112, now seen corresponding path program 19 times [2022-01-18 03:09:10,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:10,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527739789] [2022-01-18 03:09:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:10,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:11,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:11,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527739789] [2022-01-18 03:09:11,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527739789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:11,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:11,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:09:11,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639518059] [2022-01-18 03:09:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:11,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:09:11,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:09:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:09:11,210 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 03:09:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:11,979 INFO L93 Difference]: Finished difference Result 1339 states and 3261 transitions. [2022-01-18 03:09:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:09:11,980 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 03:09:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:11,981 INFO L225 Difference]: With dead ends: 1339 [2022-01-18 03:09:11,981 INFO L226 Difference]: Without dead ends: 1098 [2022-01-18 03:09:11,982 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 03:09:11,982 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 03:09:11,983 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 03:09:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-18 03:09:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1082. [2022-01-18 03:09:11,993 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 03:09:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 2669 transitions. [2022-01-18 03:09:11,995 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 2669 transitions. Word has length 79 [2022-01-18 03:09:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:11,995 INFO L470 AbstractCegarLoop]: Abstraction has 1082 states and 2669 transitions. [2022-01-18 03:09:11,995 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 03:09:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 2669 transitions. [2022-01-18 03:09:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:11,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:11,997 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 03:09:11,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 03:09:11,997 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:11,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1646229788, now seen corresponding path program 20 times [2022-01-18 03:09:11,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:11,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316304568] [2022-01-18 03:09:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:11,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:12,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:12,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316304568] [2022-01-18 03:09:12,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316304568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:12,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:12,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:09:12,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436354433] [2022-01-18 03:09:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:12,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:09:12,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:09:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:09:12,312 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 03:09:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:13,761 INFO L93 Difference]: Finished difference Result 1463 states and 3598 transitions. [2022-01-18 03:09:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 03:09:13,762 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 03:09:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:13,764 INFO L225 Difference]: With dead ends: 1463 [2022-01-18 03:09:13,764 INFO L226 Difference]: Without dead ends: 1365 [2022-01-18 03:09:13,765 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 03:09:13,765 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 370 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:13,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 3285 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:09:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-01-18 03:09:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1158. [2022-01-18 03:09:13,777 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 03:09:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2870 transitions. [2022-01-18 03:09:13,779 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2870 transitions. Word has length 79 [2022-01-18 03:09:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:13,779 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 2870 transitions. [2022-01-18 03:09:13,779 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 03:09:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2870 transitions. [2022-01-18 03:09:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:13,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:13,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:13,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 03:09:13,781 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1332204616, now seen corresponding path program 21 times [2022-01-18 03:09:13,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:13,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041513725] [2022-01-18 03:09:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:13,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:14,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:14,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041513725] [2022-01-18 03:09:14,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041513725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:14,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:14,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:09:14,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56074276] [2022-01-18 03:09:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:14,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:09:14,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:09:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:09:14,077 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 03:09:16,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:16,301 INFO L93 Difference]: Finished difference Result 1419 states and 3481 transitions. [2022-01-18 03:09:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 03:09:16,302 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 03:09:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:16,304 INFO L225 Difference]: With dead ends: 1419 [2022-01-18 03:09:16,304 INFO L226 Difference]: Without dead ends: 1284 [2022-01-18 03:09:16,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=3390, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 03:09:16,305 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 388 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:16,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 3115 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 03:09:16,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-01-18 03:09:16,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1134. [2022-01-18 03:09:16,317 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 03:09:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 2804 transitions. [2022-01-18 03:09:16,319 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 2804 transitions. Word has length 79 [2022-01-18 03:09:16,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:16,319 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 2804 transitions. [2022-01-18 03:09:16,319 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 03:09:16,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 2804 transitions. [2022-01-18 03:09:16,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:16,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:16,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:16,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 03:09:16,321 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1594757116, now seen corresponding path program 22 times [2022-01-18 03:09:16,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:16,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690097991] [2022-01-18 03:09:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:16,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:16,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:16,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690097991] [2022-01-18 03:09:16,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690097991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:16,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:16,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:16,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110039338] [2022-01-18 03:09:16,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:16,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:16,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:16,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:16,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:16,593 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 03:09:18,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:18,155 INFO L93 Difference]: Finished difference Result 1383 states and 3382 transitions. [2022-01-18 03:09:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:09:18,155 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 03:09:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:18,157 INFO L225 Difference]: With dead ends: 1383 [2022-01-18 03:09:18,158 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 03:09:18,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=2639, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:09:18,159 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 345 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:18,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 3037 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:09:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 03:09:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1110. [2022-01-18 03:09:18,170 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 03:09:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 2738 transitions. [2022-01-18 03:09:18,172 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 2738 transitions. Word has length 79 [2022-01-18 03:09:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:18,172 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 2738 transitions. [2022-01-18 03:09:18,172 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 03:09:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 2738 transitions. [2022-01-18 03:09:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:18,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:18,174 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 03:09:18,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 03:09:18,174 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:18,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:18,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1509675336, now seen corresponding path program 23 times [2022-01-18 03:09:18,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:18,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644378919] [2022-01-18 03:09:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:18,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:18,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:18,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644378919] [2022-01-18 03:09:18,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644378919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:18,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:18,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:09:18,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408876935] [2022-01-18 03:09:18,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:18,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:09:18,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:09:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:09:18,458 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 03:09:19,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:19,420 INFO L93 Difference]: Finished difference Result 1347 states and 3283 transitions. [2022-01-18 03:09:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:09:19,420 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 03:09:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:19,422 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 03:09:19,422 INFO L226 Difference]: Without dead ends: 1122 [2022-01-18 03:09:19,423 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 03:09:19,423 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 306 mSDsluCounter, 3144 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:19,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3106 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:09:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-18 03:09:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1086. [2022-01-18 03:09:19,434 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 03:09:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2676 transitions. [2022-01-18 03:09:19,436 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2676 transitions. Word has length 79 [2022-01-18 03:09:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:19,436 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2676 transitions. [2022-01-18 03:09:19,436 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 03:09:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2676 transitions. [2022-01-18 03:09:19,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:19,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:19,437 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 03:09:19,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 03:09:19,438 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:19,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash -661324088, now seen corresponding path program 24 times [2022-01-18 03:09:19,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:19,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892847957] [2022-01-18 03:09:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:19,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:19,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:19,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892847957] [2022-01-18 03:09:19,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892847957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:19,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:19,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:09:19,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72432800] [2022-01-18 03:09:19,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:19,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:09:19,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:09:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:09:19,813 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 03:09:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:20,644 INFO L93 Difference]: Finished difference Result 1374 states and 3351 transitions. [2022-01-18 03:09:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:09:20,645 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 03:09:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:20,646 INFO L225 Difference]: With dead ends: 1374 [2022-01-18 03:09:20,646 INFO L226 Difference]: Without dead ends: 1090 [2022-01-18 03:09:20,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 03:09:20,647 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 03:09:20,647 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 03:09:20,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-01-18 03:09:20,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1074. [2022-01-18 03:09:20,658 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 03:09:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2647 transitions. [2022-01-18 03:09:20,660 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2647 transitions. Word has length 79 [2022-01-18 03:09:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:20,660 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2647 transitions. [2022-01-18 03:09:20,660 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 03:09:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2647 transitions. [2022-01-18 03:09:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:20,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:20,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:20,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 03:09:20,662 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash -212811868, now seen corresponding path program 25 times [2022-01-18 03:09:20,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:20,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136511258] [2022-01-18 03:09:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:20,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:21,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:21,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136511258] [2022-01-18 03:09:21,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136511258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:21,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:21,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:09:21,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699847585] [2022-01-18 03:09:21,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:21,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:09:21,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:21,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:09:21,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:09:21,031 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 03:09:22,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:22,622 INFO L93 Difference]: Finished difference Result 1439 states and 3532 transitions. [2022-01-18 03:09:22,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 03:09:22,622 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 03:09:22,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:22,624 INFO L225 Difference]: With dead ends: 1439 [2022-01-18 03:09:22,624 INFO L226 Difference]: Without dead ends: 1341 [2022-01-18 03:09:22,625 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 03:09:22,625 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 03:09:22,626 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 03:09:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-01-18 03:09:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1150. [2022-01-18 03:09:22,658 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 03:09:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 2848 transitions. [2022-01-18 03:09:22,662 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 2848 transitions. Word has length 79 [2022-01-18 03:09:22,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:22,663 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 2848 transitions. [2022-01-18 03:09:22,663 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 03:09:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 2848 transitions. [2022-01-18 03:09:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:22,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:22,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:22,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 03:09:22,664 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1103721024, now seen corresponding path program 26 times [2022-01-18 03:09:22,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:22,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059326546] [2022-01-18 03:09:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:22,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:22,965 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 03:09:22,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:22,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059326546] [2022-01-18 03:09:22,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059326546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:22,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:22,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:09:22,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373366651] [2022-01-18 03:09:22,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:22,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:09:22,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:09:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:09:22,967 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 03:09:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:24,553 INFO L93 Difference]: Finished difference Result 1395 states and 3415 transitions. [2022-01-18 03:09:24,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:09:24,553 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 03:09:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:24,556 INFO L225 Difference]: With dead ends: 1395 [2022-01-18 03:09:24,556 INFO L226 Difference]: Without dead ends: 1260 [2022-01-18 03:09:24,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=3278, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 03:09:24,557 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 03:09:24,557 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 03:09:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-01-18 03:09:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1126. [2022-01-18 03:09:24,569 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 03:09:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 2782 transitions. [2022-01-18 03:09:24,571 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 2782 transitions. Word has length 79 [2022-01-18 03:09:24,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:24,571 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 2782 transitions. [2022-01-18 03:09:24,571 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 03:09:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 2782 transitions. [2022-01-18 03:09:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:24,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:24,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:24,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 03:09:24,573 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:24,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:24,573 INFO L85 PathProgramCache]: Analyzing trace with hash -264284540, now seen corresponding path program 27 times [2022-01-18 03:09:24,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:24,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501701664] [2022-01-18 03:09:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:24,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:24,862 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 03:09:24,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:24,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501701664] [2022-01-18 03:09:24,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501701664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:24,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:24,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:24,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110681808] [2022-01-18 03:09:24,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:24,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:24,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:24,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:24,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:24,863 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 03:09:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:26,051 INFO L93 Difference]: Finished difference Result 1359 states and 3316 transitions. [2022-01-18 03:09:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:09:26,051 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 03:09:26,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:26,053 INFO L225 Difference]: With dead ends: 1359 [2022-01-18 03:09:26,053 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 03:09:26,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=2541, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 03:09:26,054 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, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:26,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 3089 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:09:26,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 03:09:26,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1102. [2022-01-18 03:09:26,066 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 03:09:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 2716 transitions. [2022-01-18 03:09:26,067 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 2716 transitions. Word has length 79 [2022-01-18 03:09:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:26,067 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 2716 transitions. [2022-01-18 03:09:26,067 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 03:09:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 2716 transitions. [2022-01-18 03:09:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:26,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:26,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:26,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 03:09:26,069 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash 926250304, now seen corresponding path program 28 times [2022-01-18 03:09:26,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:26,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465853445] [2022-01-18 03:09:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:26,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:26,375 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 03:09:26,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:26,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465853445] [2022-01-18 03:09:26,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465853445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:26,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:26,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:09:26,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562990470] [2022-01-18 03:09:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:26,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:09:26,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:09:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:09:26,376 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 03:09:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:27,295 INFO L93 Difference]: Finished difference Result 1323 states and 3217 transitions. [2022-01-18 03:09:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:09:27,296 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 03:09:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:27,297 INFO L225 Difference]: With dead ends: 1323 [2022-01-18 03:09:27,297 INFO L226 Difference]: Without dead ends: 1098 [2022-01-18 03:09:27,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1893, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:09:27,298 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 03:09:27,298 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 03:09:27,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-01-18 03:09:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1078. [2022-01-18 03:09:27,312 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 03:09:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2654 transitions. [2022-01-18 03:09:27,313 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2654 transitions. Word has length 79 [2022-01-18 03:09:27,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:27,313 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 2654 transitions. [2022-01-18 03:09:27,314 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 03:09:27,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2654 transitions. [2022-01-18 03:09:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:27,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:27,315 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 03:09:27,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 03:09:27,315 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:27,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1774601552, now seen corresponding path program 29 times [2022-01-18 03:09:27,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:27,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089910219] [2022-01-18 03:09:27,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:27,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:27,601 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 03:09:27,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:27,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089910219] [2022-01-18 03:09:27,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089910219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:27,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:27,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:09:27,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987037062] [2022-01-18 03:09:27,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:27,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:09:27,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:27,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:09:27,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:09:27,603 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 03:09:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:28,368 INFO L93 Difference]: Finished difference Result 1358 states and 3307 transitions. [2022-01-18 03:09:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:09:28,369 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 03:09:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:28,370 INFO L225 Difference]: With dead ends: 1358 [2022-01-18 03:09:28,370 INFO L226 Difference]: Without dead ends: 1082 [2022-01-18 03:09:28,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 03:09:28,371 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, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:28,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2728 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:09:28,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-01-18 03:09:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1074. [2022-01-18 03:09:28,380 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 03:09:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2643 transitions. [2022-01-18 03:09:28,382 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2643 transitions. Word has length 79 [2022-01-18 03:09:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:28,382 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2643 transitions. [2022-01-18 03:09:28,382 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 03:09:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2643 transitions. [2022-01-18 03:09:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:28,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:28,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:28,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 03:09:28,384 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1666685224, now seen corresponding path program 30 times [2022-01-18 03:09:28,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:28,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090095432] [2022-01-18 03:09:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:28,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:28,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:28,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090095432] [2022-01-18 03:09:28,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090095432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:28,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:28,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:09:28,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838474308] [2022-01-18 03:09:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:28,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:09:28,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:28,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:09:28,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:09:28,658 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 03:09:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:29,396 INFO L93 Difference]: Finished difference Result 1346 states and 3274 transitions. [2022-01-18 03:09:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 03:09:29,397 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 03:09:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:29,399 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 03:09:29,399 INFO L226 Difference]: Without dead ends: 1001 [2022-01-18 03:09:29,400 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 03:09:29,400 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, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:29,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 2957 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:09:29,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-01-18 03:09:29,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2022-01-18 03:09:29,410 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 03:09:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 2488 transitions. [2022-01-18 03:09:29,412 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 2488 transitions. Word has length 79 [2022-01-18 03:09:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:29,412 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 2488 transitions. [2022-01-18 03:09:29,412 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 03:09:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2488 transitions. [2022-01-18 03:09:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:29,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:29,413 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 03:09:29,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 03:09:29,414 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash -364385472, now seen corresponding path program 31 times [2022-01-18 03:09:29,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326998474] [2022-01-18 03:09:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:29,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:29,725 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 03:09:29,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:29,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326998474] [2022-01-18 03:09:29,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326998474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:29,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:29,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:09:29,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194768442] [2022-01-18 03:09:29,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:29,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:09:29,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:29,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:09:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:09:29,726 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 03:09:32,282 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 03:09:33,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:33,292 INFO L93 Difference]: Finished difference Result 1355 states and 3391 transitions. [2022-01-18 03:09:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 03:09:33,292 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 03:09:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:33,294 INFO L225 Difference]: With dead ends: 1355 [2022-01-18 03:09:33,294 INFO L226 Difference]: Without dead ends: 1225 [2022-01-18 03:09:33,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=266, Invalid=3274, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 03:09:33,295 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 378 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:33,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 2911 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1206 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 03:09:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-01-18 03:09:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1089. [2022-01-18 03:09:33,305 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 03:09:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2722 transitions. [2022-01-18 03:09:33,306 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2722 transitions. Word has length 79 [2022-01-18 03:09:33,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:33,306 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2722 transitions. [2022-01-18 03:09:33,306 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 03:09:33,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2722 transitions. [2022-01-18 03:09:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:33,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:33,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:33,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 03:09:33,308 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1217776638, now seen corresponding path program 32 times [2022-01-18 03:09:33,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:33,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73022778] [2022-01-18 03:09:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:33,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:33,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:33,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73022778] [2022-01-18 03:09:33,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73022778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:33,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:33,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:09:33,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993647909] [2022-01-18 03:09:33,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:33,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:09:33,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:33,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:09:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:09:33,607 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 03:09:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:36,178 INFO L93 Difference]: Finished difference Result 1354 states and 3382 transitions. [2022-01-18 03:09:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 03:09:36,178 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 03:09:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:36,180 INFO L225 Difference]: With dead ends: 1354 [2022-01-18 03:09:36,180 INFO L226 Difference]: Without dead ends: 1256 [2022-01-18 03:09:36,180 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 03:09:36,181 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 376 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:36,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 3012 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 03:09:36,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-01-18 03:09:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1093. [2022-01-18 03:09:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 2.499084249084249) internal successors, (2729), 1092 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2729 transitions. [2022-01-18 03:09:36,193 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2729 transitions. Word has length 79 [2022-01-18 03:09:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:36,193 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2729 transitions. [2022-01-18 03:09:36,193 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 03:09:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2729 transitions. [2022-01-18 03:09:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:36,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:36,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:36,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 03:09:36,194 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:36,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash -503539360, now seen corresponding path program 33 times [2022-01-18 03:09:36,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:36,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999294387] [2022-01-18 03:09:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:36,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:36,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:36,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999294387] [2022-01-18 03:09:36,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999294387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:36,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:36,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:09:36,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799128177] [2022-01-18 03:09:36,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:36,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:09:36,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:36,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:09:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:09:36,526 INFO L87 Difference]: Start difference. First operand 1093 states and 2729 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 03:09:39,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:09:41,703 WARN L534 Checker$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 03:09:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:42,215 INFO L93 Difference]: Finished difference Result 1377 states and 3431 transitions. [2022-01-18 03:09:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 03:09:42,215 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 03:09:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:42,216 INFO L225 Difference]: With dead ends: 1377 [2022-01-18 03:09:42,217 INFO L226 Difference]: Without dead ends: 1264 [2022-01-18 03:09:42,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=315, Invalid=3845, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 03:09:42,217 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 396 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 48 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:42,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 3087 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1239 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-01-18 03:09:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-01-18 03:09:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1109. [2022-01-18 03:09:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1108 states have (on average 2.4918772563176894) internal successors, (2761), 1108 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 03:09:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 2761 transitions. [2022-01-18 03:09:42,231 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 2761 transitions. Word has length 79 [2022-01-18 03:09:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:42,231 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 2761 transitions. [2022-01-18 03:09:42,231 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 03:09:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 2761 transitions. [2022-01-18 03:09:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:42,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:42,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:42,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 03:09:42,233 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:42,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:42,233 INFO L85 PathProgramCache]: Analyzing trace with hash -178091134, now seen corresponding path program 34 times [2022-01-18 03:09:42,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:42,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848020758] [2022-01-18 03:09:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:42,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:42,559 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 03:09:42,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:42,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848020758] [2022-01-18 03:09:42,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848020758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:42,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:42,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:09:42,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248966265] [2022-01-18 03:09:42,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:42,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:09:42,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:09:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:09:42,563 INFO L87 Difference]: Start difference. First operand 1109 states and 2761 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 03:09:45,545 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 03:09:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:46,467 INFO L93 Difference]: Finished difference Result 1371 states and 3407 transitions. [2022-01-18 03:09:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:09:46,468 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 03:09:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:46,469 INFO L225 Difference]: With dead ends: 1371 [2022-01-18 03:09:46,469 INFO L226 Difference]: Without dead ends: 1221 [2022-01-18 03:09:46,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=3051, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:09:46,470 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 367 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:46,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 3126 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1217 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-01-18 03:09:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-01-18 03:09:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1105. [2022-01-18 03:09:46,480 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 03:09:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2750 transitions. [2022-01-18 03:09:46,482 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2750 transitions. Word has length 79 [2022-01-18 03:09:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:46,482 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2750 transitions. [2022-01-18 03:09:46,482 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 03:09:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2750 transitions. [2022-01-18 03:09:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:46,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:46,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:46,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 03:09:46,484 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 683491200, now seen corresponding path program 35 times [2022-01-18 03:09:46,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:46,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810306516] [2022-01-18 03:09:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:46,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:46,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:46,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810306516] [2022-01-18 03:09:46,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810306516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:46,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:46,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:46,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699333901] [2022-01-18 03:09:46,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:46,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:46,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:46,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:46,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:46,788 INFO L87 Difference]: Start difference. First operand 1105 states and 2750 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 03:09:50,502 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 03:09:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:50,761 INFO L93 Difference]: Finished difference Result 1444 states and 3555 transitions. [2022-01-18 03:09:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:09:50,762 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 03:09:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:50,763 INFO L225 Difference]: With dead ends: 1444 [2022-01-18 03:09:50,763 INFO L226 Difference]: Without dead ends: 1346 [2022-01-18 03:09:50,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=281, Invalid=3141, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 03:09:50,764 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 365 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:50,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 3071 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1239 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-01-18 03:09:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2022-01-18 03:09:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1113. [2022-01-18 03:09:50,775 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 03:09:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 2772 transitions. [2022-01-18 03:09:50,776 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 2772 transitions. Word has length 79 [2022-01-18 03:09:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:50,776 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 2772 transitions. [2022-01-18 03:09:50,776 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 03:09:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 2772 transitions. [2022-01-18 03:09:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:50,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:50,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:50,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 03:09:50,778 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:50,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:50,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1397728478, now seen corresponding path program 36 times [2022-01-18 03:09:50,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:50,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979674237] [2022-01-18 03:09:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:50,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:51,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:51,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979674237] [2022-01-18 03:09:51,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979674237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:51,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:51,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:51,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011143505] [2022-01-18 03:09:51,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:51,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:51,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:51,087 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 03:09:53,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:53,165 INFO L93 Difference]: Finished difference Result 1363 states and 3376 transitions. [2022-01-18 03:09:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:09:53,166 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 03:09:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:53,167 INFO L225 Difference]: With dead ends: 1363 [2022-01-18 03:09:53,167 INFO L226 Difference]: Without dead ends: 1188 [2022-01-18 03:09:53,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=2928, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:09:53,168 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 336 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:53,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 3170 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 03:09:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-01-18 03:09:53,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1081. [2022-01-18 03:09:53,177 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 03:09:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2684 transitions. [2022-01-18 03:09:53,178 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2684 transitions. Word has length 79 [2022-01-18 03:09:53,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:53,178 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2684 transitions. [2022-01-18 03:09:53,178 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 03:09:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2684 transitions. [2022-01-18 03:09:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:53,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:53,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:53,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 03:09:53,180 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 647964670, now seen corresponding path program 37 times [2022-01-18 03:09:53,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:53,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242198582] [2022-01-18 03:09:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:53,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:53,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:53,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242198582] [2022-01-18 03:09:53,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242198582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:53,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:53,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:53,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617492245] [2022-01-18 03:09:53,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:53,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:53,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:53,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:53,483 INFO L87 Difference]: Start difference. First operand 1081 states and 2684 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 03:09:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:55,390 INFO L93 Difference]: Finished difference Result 1321 states and 3277 transitions. [2022-01-18 03:09:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:09:55,390 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 03:09:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:55,391 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 03:09:55,391 INFO L226 Difference]: Without dead ends: 1192 [2022-01-18 03:09:55,392 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 03:09:55,392 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 372 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:55,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 2776 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 03:09:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-01-18 03:09:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1081. [2022-01-18 03:09:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 2.4962962962962965) internal successors, (2696), 1080 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 03:09:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2696 transitions. [2022-01-18 03:09:55,403 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2696 transitions. Word has length 79 [2022-01-18 03:09:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:55,403 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2696 transitions. [2022-01-18 03:09:55,403 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 03:09:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2696 transitions. [2022-01-18 03:09:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:55,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:55,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:55,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 03:09:55,405 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1725629730, now seen corresponding path program 38 times [2022-01-18 03:09:55,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:55,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352293188] [2022-01-18 03:09:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:55,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:55,713 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 03:09:55,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:55,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352293188] [2022-01-18 03:09:55,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352293188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:55,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:55,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:55,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181235374] [2022-01-18 03:09:55,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:55,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:55,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:55,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:55,715 INFO L87 Difference]: Start difference. First operand 1081 states and 2696 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 03:09:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:56,993 INFO L93 Difference]: Finished difference Result 1291 states and 3207 transitions. [2022-01-18 03:09:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:09:56,993 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 03:09:56,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:56,995 INFO L225 Difference]: With dead ends: 1291 [2022-01-18 03:09:56,995 INFO L226 Difference]: Without dead ends: 1177 [2022-01-18 03:09:56,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=2625, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:09:56,995 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 337 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:56,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2743 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:09:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-01-18 03:09:57,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1081. [2022-01-18 03:09:57,005 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 03:09:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2692 transitions. [2022-01-18 03:09:57,006 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2692 transitions. Word has length 79 [2022-01-18 03:09:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:57,007 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2692 transitions. [2022-01-18 03:09:57,007 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 03:09:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2692 transitions. [2022-01-18 03:09:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:57,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:57,008 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 03:09:57,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 03:09:57,008 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:57,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:57,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1358735300, now seen corresponding path program 39 times [2022-01-18 03:09:57,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:57,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685894112] [2022-01-18 03:09:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:57,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:57,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:57,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685894112] [2022-01-18 03:09:57,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685894112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:57,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:57,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:57,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390049772] [2022-01-18 03:09:57,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:57,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:57,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:57,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:57,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:57,312 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 03:09:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:58,492 INFO L93 Difference]: Finished difference Result 1263 states and 3134 transitions. [2022-01-18 03:09:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:09:58,492 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 03:09:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:58,494 INFO L225 Difference]: With dead ends: 1263 [2022-01-18 03:09:58,494 INFO L226 Difference]: Without dead ends: 1157 [2022-01-18 03:09:58,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=2617, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:09:58,495 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 297 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:58,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2809 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:09:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-01-18 03:09:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1073. [2022-01-18 03:09:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 2.4944029850746268) internal successors, (2674), 1072 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2674 transitions. [2022-01-18 03:09:58,505 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2674 transitions. Word has length 79 [2022-01-18 03:09:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:58,505 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2674 transitions. [2022-01-18 03:09:58,505 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 03:09:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2674 transitions. [2022-01-18 03:09:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:09:58,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:58,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:09:58,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 03:09:58,507 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1751303904, now seen corresponding path program 40 times [2022-01-18 03:09:58,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:58,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220406476] [2022-01-18 03:09:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:58,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:58,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220406476] [2022-01-18 03:09:58,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220406476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:09:58,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:09:58,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:09:58,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306609176] [2022-01-18 03:09:58,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:09:58,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:09:58,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:09:58,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:09:58,793 INFO L87 Difference]: Start difference. First operand 1073 states and 2674 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 03:10:00,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:00,296 INFO L93 Difference]: Finished difference Result 1320 states and 3276 transitions. [2022-01-18 03:10:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:10:00,296 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 03:10:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:00,298 INFO L225 Difference]: With dead ends: 1320 [2022-01-18 03:10:00,298 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 03:10:00,298 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 03:10:00,298 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 353 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:00,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 2891 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:10:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 03:10:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1097. [2022-01-18 03:10:00,308 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 03:10:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2732 transitions. [2022-01-18 03:10:00,309 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2732 transitions. Word has length 79 [2022-01-18 03:10:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:00,310 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2732 transitions. [2022-01-18 03:10:00,310 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 03:10:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2732 transitions. [2022-01-18 03:10:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:00,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:00,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:00,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 03:10:00,311 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:00,311 INFO L85 PathProgramCache]: Analyzing trace with hash -434771012, now seen corresponding path program 41 times [2022-01-18 03:10:00,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:00,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486049194] [2022-01-18 03:10:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:00,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:00,581 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 03:10:00,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486049194] [2022-01-18 03:10:00,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486049194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:00,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:00,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:00,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930362056] [2022-01-18 03:10:00,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:00,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:00,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:00,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:00,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:00,582 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 03:10:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:01,746 INFO L93 Difference]: Finished difference Result 1288 states and 3188 transitions. [2022-01-18 03:10:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:10:01,748 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 03:10:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:01,749 INFO L225 Difference]: With dead ends: 1288 [2022-01-18 03:10:01,749 INFO L226 Difference]: Without dead ends: 1145 [2022-01-18 03:10:01,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=2823, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:10:01,750 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 352 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:01,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2725 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:10:01,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-01-18 03:10:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1065. [2022-01-18 03:10:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.492481203007519) internal successors, (2652), 1064 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 03:10:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2652 transitions. [2022-01-18 03:10:01,761 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2652 transitions. Word has length 79 [2022-01-18 03:10:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:01,761 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2652 transitions. [2022-01-18 03:10:01,761 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 03:10:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2652 transitions. [2022-01-18 03:10:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:01,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:01,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:01,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 03:10:01,762 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:01,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash -917420034, now seen corresponding path program 42 times [2022-01-18 03:10:01,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:01,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175909918] [2022-01-18 03:10:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:01,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:02,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:02,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175909918] [2022-01-18 03:10:02,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175909918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:02,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:02,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:10:02,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703081641] [2022-01-18 03:10:02,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:02,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:10:02,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:10:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:10:02,085 INFO L87 Difference]: Start difference. First operand 1065 states and 2652 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 03:10:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:04,566 INFO L93 Difference]: Finished difference Result 1363 states and 3384 transitions. [2022-01-18 03:10:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:10:04,567 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 03:10:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:04,569 INFO L225 Difference]: With dead ends: 1363 [2022-01-18 03:10:04,569 INFO L226 Difference]: Without dead ends: 1265 [2022-01-18 03:10:04,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=3610, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:10:04,570 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 366 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:04,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 3039 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 03:10:04,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-01-18 03:10:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1093. [2022-01-18 03:10:04,580 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 03:10:04,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-01-18 03:10:04,581 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-01-18 03:10:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:04,582 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-01-18 03:10:04,582 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 03:10:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-01-18 03:10:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:04,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:04,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:04,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 03:10:04,583 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash 399112858, now seen corresponding path program 43 times [2022-01-18 03:10:04,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:04,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843540580] [2022-01-18 03:10:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:04,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:04,869 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 03:10:04,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:04,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843540580] [2022-01-18 03:10:04,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843540580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:04,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:04,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:10:04,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102227322] [2022-01-18 03:10:04,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:04,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:10:04,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:04,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:10:04,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:10:04,871 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 03:10:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:06,198 INFO L93 Difference]: Finished difference Result 1319 states and 3267 transitions. [2022-01-18 03:10:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 03:10:06,198 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 03:10:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:06,200 INFO L225 Difference]: With dead ends: 1319 [2022-01-18 03:10:06,200 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 03:10:06,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=288, Invalid=3494, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:10:06,201 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 368 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:06,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 3025 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:10:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 03:10:06,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1069. [2022-01-18 03:10:06,217 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 03:10:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2659 transitions. [2022-01-18 03:10:06,219 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2659 transitions. Word has length 79 [2022-01-18 03:10:06,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:06,219 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2659 transitions. [2022-01-18 03:10:06,219 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 03:10:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2659 transitions. [2022-01-18 03:10:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:06,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:06,220 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 03:10:06,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 03:10:06,221 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash -731402172, now seen corresponding path program 44 times [2022-01-18 03:10:06,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:06,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059045348] [2022-01-18 03:10:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:06,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:06,559 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 03:10:06,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:06,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059045348] [2022-01-18 03:10:06,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059045348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:06,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:06,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:06,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290033716] [2022-01-18 03:10:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:06,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:06,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:06,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:06,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:06,561 INFO L87 Difference]: Start difference. First operand 1069 states and 2659 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 03:10:07,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:07,784 INFO L93 Difference]: Finished difference Result 1307 states and 3234 transitions. [2022-01-18 03:10:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:10:07,784 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 03:10:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:07,786 INFO L225 Difference]: With dead ends: 1307 [2022-01-18 03:10:07,786 INFO L226 Difference]: Without dead ends: 1133 [2022-01-18 03:10:07,786 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 03:10:07,787 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 372 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:07,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 2948 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:10:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2022-01-18 03:10:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1053. [2022-01-18 03:10:07,796 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 03:10:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2619 transitions. [2022-01-18 03:10:07,797 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2619 transitions. Word has length 79 [2022-01-18 03:10:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:07,798 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2619 transitions. [2022-01-18 03:10:07,798 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 03:10:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2619 transitions. [2022-01-18 03:10:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:07,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:07,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:07,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-18 03:10:07,799 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:07,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1689438564, now seen corresponding path program 45 times [2022-01-18 03:10:07,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:07,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704384002] [2022-01-18 03:10:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:07,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:08,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:08,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704384002] [2022-01-18 03:10:08,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704384002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:08,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:08,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:08,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44489733] [2022-01-18 03:10:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:08,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:08,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:08,084 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 03:10:10,999 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 03:10:11,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:11,554 INFO L93 Difference]: Finished difference Result 1341 states and 3315 transitions. [2022-01-18 03:10:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:10:11,554 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 03:10:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:11,556 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 03:10:11,556 INFO L226 Difference]: Without dead ends: 1243 [2022-01-18 03:10:11,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 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 03:10:11,556 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 346 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:11,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2837 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1132 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 03:10:11,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-01-18 03:10:11,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1101. [2022-01-18 03:10:11,566 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 03:10:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-01-18 03:10:11,567 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-01-18 03:10:11,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:11,567 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-01-18 03:10:11,568 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 03:10:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-01-18 03:10:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:11,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:11,569 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 03:10:11,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 03:10:11,569 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:11,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1288995840, now seen corresponding path program 46 times [2022-01-18 03:10:11,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:11,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981962421] [2022-01-18 03:10:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:11,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:11,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:11,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981962421] [2022-01-18 03:10:11,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981962421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:11,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:11,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:11,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892000218] [2022-01-18 03:10:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:11,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:11,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:11,847 INFO L87 Difference]: Start difference. First operand 1101 states and 2743 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 03:10:15,331 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 03:10:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:15,609 INFO L93 Difference]: Finished difference Result 1321 states and 3256 transitions. [2022-01-18 03:10:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:10:15,609 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 03:10:15,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:15,610 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 03:10:15,610 INFO L226 Difference]: Without dead ends: 1186 [2022-01-18 03:10:15,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=3046, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:10:15,611 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 358 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:15,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2808 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1092 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-01-18 03:10:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-18 03:10:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1089. [2022-01-18 03:10:15,621 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 03:10:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2710 transitions. [2022-01-18 03:10:15,622 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2710 transitions. Word has length 79 [2022-01-18 03:10:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:15,622 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2710 transitions. [2022-01-18 03:10:15,623 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 03:10:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2710 transitions. [2022-01-18 03:10:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:15,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:15,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:15,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-18 03:10:15,624 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1817215256, now seen corresponding path program 47 times [2022-01-18 03:10:15,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:15,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956810789] [2022-01-18 03:10:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:15,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:15,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:15,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956810789] [2022-01-18 03:10:15,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956810789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:15,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:15,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:15,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281335574] [2022-01-18 03:10:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:15,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:15,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:15,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:15,908 INFO L87 Difference]: Start difference. First operand 1089 states and 2710 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 03:10:18,231 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 03:10:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:18,856 INFO L93 Difference]: Finished difference Result 1297 states and 3194 transitions. [2022-01-18 03:10:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:10:18,857 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 03:10:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:18,858 INFO L225 Difference]: With dead ends: 1297 [2022-01-18 03:10:18,858 INFO L226 Difference]: Without dead ends: 1081 [2022-01-18 03:10:18,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1978, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:10:18,858 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 303 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:18,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2601 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 974 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 03:10:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-01-18 03:10:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1029. [2022-01-18 03:10:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 2.487354085603113) internal successors, (2557), 1028 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2557 transitions. [2022-01-18 03:10:18,868 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2557 transitions. Word has length 79 [2022-01-18 03:10:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:18,869 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2557 transitions. [2022-01-18 03:10:18,869 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 03:10:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2557 transitions. [2022-01-18 03:10:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:18,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:18,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:18,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-18 03:10:18,870 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1342003044, now seen corresponding path program 48 times [2022-01-18 03:10:18,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:18,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063610789] [2022-01-18 03:10:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:18,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:19,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063610789] [2022-01-18 03:10:19,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063610789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:19,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:19,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:19,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631644287] [2022-01-18 03:10:19,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:19,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:19,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:19,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:19,154 INFO L87 Difference]: Start difference. First operand 1029 states and 2557 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 03:10:20,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:20,181 INFO L93 Difference]: Finished difference Result 1251 states and 3101 transitions. [2022-01-18 03:10:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:10:20,182 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 03:10:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:20,183 INFO L225 Difference]: With dead ends: 1251 [2022-01-18 03:10:20,183 INFO L226 Difference]: Without dead ends: 1137 [2022-01-18 03:10:20,184 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 03:10:20,184 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 263 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:20,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2700 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:10:20,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-01-18 03:10:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1065. [2022-01-18 03:10:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.492481203007519) internal successors, (2652), 1064 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 03:10:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2652 transitions. [2022-01-18 03:10:20,195 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2652 transitions. Word has length 79 [2022-01-18 03:10:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:20,195 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2652 transitions. [2022-01-18 03:10:20,196 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 03:10:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2652 transitions. [2022-01-18 03:10:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:20,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:20,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:20,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-18 03:10:20,197 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:20,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1708897474, now seen corresponding path program 49 times [2022-01-18 03:10:20,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:20,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863541205] [2022-01-18 03:10:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:20,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:20,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863541205] [2022-01-18 03:10:20,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863541205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:20,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:20,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:20,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379099615] [2022-01-18 03:10:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:20,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:20,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:20,480 INFO L87 Difference]: Start difference. First operand 1065 states and 2652 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 03:10:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:21,462 INFO L93 Difference]: Finished difference Result 1262 states and 3125 transitions. [2022-01-18 03:10:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:10:21,462 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 03:10:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:21,464 INFO L225 Difference]: With dead ends: 1262 [2022-01-18 03:10:21,464 INFO L226 Difference]: Without dead ends: 1164 [2022-01-18 03:10:21,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=2144, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:10:21,464 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 289 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:21,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2542 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:10:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-18 03:10:21,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1069. [2022-01-18 03:10:21,474 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 03:10:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2659 transitions. [2022-01-18 03:10:21,475 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2659 transitions. Word has length 79 [2022-01-18 03:10:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:21,475 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2659 transitions. [2022-01-18 03:10:21,475 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 03:10:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2659 transitions. [2022-01-18 03:10:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:21,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:21,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:21,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-18 03:10:21,477 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash -994660196, now seen corresponding path program 50 times [2022-01-18 03:10:21,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:21,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568612836] [2022-01-18 03:10:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:21,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:21,749 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 03:10:21,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:21,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568612836] [2022-01-18 03:10:21,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568612836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:21,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:21,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:21,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890801976] [2022-01-18 03:10:21,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:21,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:21,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:21,750 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 03:10:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:22,716 INFO L93 Difference]: Finished difference Result 1230 states and 3041 transitions. [2022-01-18 03:10:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:10:22,717 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 03:10:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:22,718 INFO L225 Difference]: With dead ends: 1230 [2022-01-18 03:10:22,718 INFO L226 Difference]: Without dead ends: 1121 [2022-01-18 03:10:22,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:10:22,725 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 316 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:22,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2469 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:10:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-01-18 03:10:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1061. [2022-01-18 03:10:22,736 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 03:10:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 2641 transitions. [2022-01-18 03:10:22,737 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 2641 transitions. Word has length 79 [2022-01-18 03:10:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:22,737 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 2641 transitions. [2022-01-18 03:10:22,738 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 03:10:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 2641 transitions. [2022-01-18 03:10:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:22,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:22,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:22,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 03:10:22,739 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash -523969382, now seen corresponding path program 51 times [2022-01-18 03:10:22,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:22,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511637415] [2022-01-18 03:10:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:22,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:23,095 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 03:10:23,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:23,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511637415] [2022-01-18 03:10:23,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511637415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:23,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:23,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:23,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697065787] [2022-01-18 03:10:23,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:23,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:23,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:23,097 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 03:10:26,076 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 03:10:26,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:26,233 INFO L93 Difference]: Finished difference Result 1364 states and 3347 transitions. [2022-01-18 03:10:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:10:26,234 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 03:10:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:26,235 INFO L225 Difference]: With dead ends: 1364 [2022-01-18 03:10:26,235 INFO L226 Difference]: Without dead ends: 1266 [2022-01-18 03:10:26,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2416, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:10:26,236 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 361 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:26,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 2752 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1067 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 03:10:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-01-18 03:10:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1073. [2022-01-18 03:10:26,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 2.4906716417910446) internal successors, (2670), 1072 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2670 transitions. [2022-01-18 03:10:26,246 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2670 transitions. Word has length 79 [2022-01-18 03:10:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:26,246 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2670 transitions. [2022-01-18 03:10:26,246 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 03:10:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2670 transitions. [2022-01-18 03:10:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:26,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:26,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:26,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-18 03:10:26,248 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:26,248 INFO L85 PathProgramCache]: Analyzing trace with hash 190267896, now seen corresponding path program 52 times [2022-01-18 03:10:26,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:26,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977678036] [2022-01-18 03:10:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:26,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:26,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:26,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977678036] [2022-01-18 03:10:26,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977678036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:26,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:26,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:26,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415804337] [2022-01-18 03:10:26,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:26,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:26,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:26,526 INFO L87 Difference]: Start difference. First operand 1073 states and 2670 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 03:10:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:27,752 INFO L93 Difference]: Finished difference Result 1268 states and 3133 transitions. [2022-01-18 03:10:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:10:27,752 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 03:10:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:27,754 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 03:10:27,754 INFO L226 Difference]: Without dead ends: 1109 [2022-01-18 03:10:27,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=2231, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:10:27,755 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 329 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:27,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2457 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:10:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-01-18 03:10:27,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1053. [2022-01-18 03:10:27,764 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 03:10:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2619 transitions. [2022-01-18 03:10:27,765 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2619 transitions. Word has length 79 [2022-01-18 03:10:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:27,765 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2619 transitions. [2022-01-18 03:10:27,765 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 03:10:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2619 transitions. [2022-01-18 03:10:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:27,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:27,766 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 03:10:27,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-18 03:10:27,767 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:27,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:27,767 INFO L85 PathProgramCache]: Analyzing trace with hash 309914488, now seen corresponding path program 53 times [2022-01-18 03:10:27,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:27,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966752788] [2022-01-18 03:10:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:27,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:28,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:28,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966752788] [2022-01-18 03:10:28,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966752788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:28,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:28,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:28,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588530795] [2022-01-18 03:10:28,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:28,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:28,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:28,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:28,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:28,077 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 03:10:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:29,357 INFO L93 Difference]: Finished difference Result 1327 states and 3285 transitions. [2022-01-18 03:10:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:10:29,357 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 03:10:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:29,358 INFO L225 Difference]: With dead ends: 1327 [2022-01-18 03:10:29,358 INFO L226 Difference]: Without dead ends: 1229 [2022-01-18 03:10:29,359 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 03:10:29,359 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 345 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:29,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2740 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:10:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-01-18 03:10:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1081. [2022-01-18 03:10:29,371 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 03:10:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2688 transitions. [2022-01-18 03:10:29,373 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2688 transitions. Word has length 79 [2022-01-18 03:10:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:29,373 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2688 transitions. [2022-01-18 03:10:29,373 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 03:10:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2688 transitions. [2022-01-18 03:10:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:29,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:29,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:29,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 03:10:29,375 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1626447380, now seen corresponding path program 54 times [2022-01-18 03:10:29,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:29,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577029938] [2022-01-18 03:10:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:29,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:29,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577029938] [2022-01-18 03:10:29,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577029938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:29,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:29,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:29,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266150670] [2022-01-18 03:10:29,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:29,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:29,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:29,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:29,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:29,670 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 03:10:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:30,830 INFO L93 Difference]: Finished difference Result 1283 states and 3168 transitions. [2022-01-18 03:10:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:10:30,830 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 03:10:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:30,831 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 03:10:30,832 INFO L226 Difference]: Without dead ends: 1148 [2022-01-18 03:10:30,832 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 03:10:30,832 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 346 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:30,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2872 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:10:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-01-18 03:10:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1057. [2022-01-18 03:10:30,842 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 03:10:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2626 transitions. [2022-01-18 03:10:30,843 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2626 transitions. Word has length 79 [2022-01-18 03:10:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:30,843 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2626 transitions. [2022-01-18 03:10:30,843 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 03:10:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2626 transitions. [2022-01-18 03:10:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:30,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:30,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:30,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-18 03:10:30,845 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 495932350, now seen corresponding path program 55 times [2022-01-18 03:10:30,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:30,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527671215] [2022-01-18 03:10:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:30,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:31,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:31,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527671215] [2022-01-18 03:10:31,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527671215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:31,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:31,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:31,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419200073] [2022-01-18 03:10:31,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:31,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:31,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:31,135 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 03:10:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:32,107 INFO L93 Difference]: Finished difference Result 1271 states and 3135 transitions. [2022-01-18 03:10:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:10:32,107 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 03:10:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:32,109 INFO L225 Difference]: With dead ends: 1271 [2022-01-18 03:10:32,109 INFO L226 Difference]: Without dead ends: 1105 [2022-01-18 03:10:32,109 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 03:10:32,109 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 332 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:32,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2517 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:10:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-01-18 03:10:32,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1049. [2022-01-18 03:10:32,118 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 03:10:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 2608 transitions. [2022-01-18 03:10:32,119 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 2608 transitions. Word has length 79 [2022-01-18 03:10:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:32,119 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 2608 transitions. [2022-01-18 03:10:32,119 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 03:10:32,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 2608 transitions. [2022-01-18 03:10:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:32,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:32,121 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 03:10:32,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-18 03:10:32,121 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1336687230, now seen corresponding path program 56 times [2022-01-18 03:10:32,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:32,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230502833] [2022-01-18 03:10:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:32,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:32,425 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 03:10:32,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:32,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230502833] [2022-01-18 03:10:32,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230502833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:32,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:32,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:32,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630243087] [2022-01-18 03:10:32,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:32,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:32,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:32,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:32,426 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 03:10:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:34,501 INFO L93 Difference]: Finished difference Result 1329 states and 3282 transitions. [2022-01-18 03:10:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:10:34,502 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 03:10:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:34,504 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 03:10:34,504 INFO L226 Difference]: Without dead ends: 1231 [2022-01-18 03:10:34,504 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 03:10:34,504 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 318 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:34,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2940 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 03:10:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-01-18 03:10:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1097. [2022-01-18 03:10:34,514 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 03:10:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2732 transitions. [2022-01-18 03:10:34,515 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2732 transitions. Word has length 79 [2022-01-18 03:10:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:34,515 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 2732 transitions. [2022-01-18 03:10:34,516 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 03:10:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2732 transitions. [2022-01-18 03:10:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:34,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:34,517 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 03:10:34,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-18 03:10:34,517 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:34,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:34,517 INFO L85 PathProgramCache]: Analyzing trace with hash -20154338, now seen corresponding path program 57 times [2022-01-18 03:10:34,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:34,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511792921] [2022-01-18 03:10:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:34,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:34,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:34,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511792921] [2022-01-18 03:10:34,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511792921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:34,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:34,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:34,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467033012] [2022-01-18 03:10:34,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:34,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:34,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:34,812 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 03:10:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:35,990 INFO L93 Difference]: Finished difference Result 1297 states and 3194 transitions. [2022-01-18 03:10:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:10:35,990 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 03:10:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:35,992 INFO L225 Difference]: With dead ends: 1297 [2022-01-18 03:10:35,992 INFO L226 Difference]: Without dead ends: 1162 [2022-01-18 03:10:35,992 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 03:10:35,992 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 317 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:35,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 3051 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:10:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-18 03:10:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1073. [2022-01-18 03:10:36,002 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 03:10:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 2666 transitions. [2022-01-18 03:10:36,003 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 2666 transitions. Word has length 79 [2022-01-18 03:10:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:36,003 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 2666 transitions. [2022-01-18 03:10:36,003 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 03:10:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 2666 transitions. [2022-01-18 03:10:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:36,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:36,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:36,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-18 03:10:36,004 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1388159902, now seen corresponding path program 58 times [2022-01-18 03:10:36,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:36,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612619048] [2022-01-18 03:10:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:36,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:36,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:36,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612619048] [2022-01-18 03:10:36,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612619048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:36,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:36,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:36,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007581613] [2022-01-18 03:10:36,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:36,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:36,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:36,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:36,300 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 03:10:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:37,384 INFO L93 Difference]: Finished difference Result 1273 states and 3128 transitions. [2022-01-18 03:10:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:10:37,384 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 03:10:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:37,386 INFO L225 Difference]: With dead ends: 1273 [2022-01-18 03:10:37,386 INFO L226 Difference]: Without dead ends: 1085 [2022-01-18 03:10:37,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=2154, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:10:37,386 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 289 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:37,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2815 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:10:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-01-18 03:10:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-01-18 03:10:37,395 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 03:10:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2586 transitions. [2022-01-18 03:10:37,396 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2586 transitions. Word has length 79 [2022-01-18 03:10:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:37,396 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2586 transitions. [2022-01-18 03:10:37,396 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 03:10:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2586 transitions. [2022-01-18 03:10:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:37,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:37,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:37,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-18 03:10:37,397 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:37,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1998693084, now seen corresponding path program 59 times [2022-01-18 03:10:37,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:37,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169918243] [2022-01-18 03:10:37,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:37,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:37,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:37,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169918243] [2022-01-18 03:10:37,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169918243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:37,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:37,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:10:37,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023826419] [2022-01-18 03:10:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:37,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:10:37,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:10:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:10:37,715 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 03:10:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:40,030 INFO L93 Difference]: Finished difference Result 1369 states and 3388 transitions. [2022-01-18 03:10:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:10:40,030 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 03:10:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:40,032 INFO L225 Difference]: With dead ends: 1369 [2022-01-18 03:10:40,032 INFO L226 Difference]: Without dead ends: 1271 [2022-01-18 03:10:40,032 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 03:10:40,032 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 370 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:40,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 3117 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 03:10:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-01-18 03:10:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1093. [2022-01-18 03:10:40,042 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 03:10:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-01-18 03:10:40,043 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-01-18 03:10:40,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:40,043 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-01-18 03:10:40,043 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 03:10:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-01-18 03:10:40,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:40,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:40,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:40,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-18 03:10:40,045 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:40,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:40,045 INFO L85 PathProgramCache]: Analyzing trace with hash -682160192, now seen corresponding path program 60 times [2022-01-18 03:10:40,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:40,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553849933] [2022-01-18 03:10:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:40,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:40,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:40,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553849933] [2022-01-18 03:10:40,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553849933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:40,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:40,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:10:40,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663693851] [2022-01-18 03:10:40,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:40,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:10:40,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:40,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:10:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:10:40,374 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 03:10:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:42,077 INFO L93 Difference]: Finished difference Result 1325 states and 3271 transitions. [2022-01-18 03:10:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 03:10:42,077 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 03:10:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:42,079 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 03:10:42,079 INFO L226 Difference]: Without dead ends: 1190 [2022-01-18 03:10:42,079 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 03:10:42,079 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 373 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:42,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 2953 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:10:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-01-18 03:10:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1069. [2022-01-18 03:10:42,089 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 03:10:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-01-18 03:10:42,090 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-01-18 03:10:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:42,090 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-01-18 03:10:42,090 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 03:10:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-01-18 03:10:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:42,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:42,091 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 03:10:42,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-18 03:10:42,091 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:42,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2050165756, now seen corresponding path program 61 times [2022-01-18 03:10:42,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:42,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967116398] [2022-01-18 03:10:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:42,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:42,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:42,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967116398] [2022-01-18 03:10:42,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967116398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:42,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:42,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:42,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932827911] [2022-01-18 03:10:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:42,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:42,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:42,396 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 03:10:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:43,551 INFO L93 Difference]: Finished difference Result 1289 states and 3172 transitions. [2022-01-18 03:10:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:10:43,551 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 03:10:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:43,553 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 03:10:43,553 INFO L226 Difference]: Without dead ends: 1109 [2022-01-18 03:10:43,553 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 03:10:43,553 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 316 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:43,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 3158 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:10:43,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-01-18 03:10:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1045. [2022-01-18 03:10:43,562 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 03:10:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2593 transitions. [2022-01-18 03:10:43,563 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2593 transitions. Word has length 79 [2022-01-18 03:10:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:43,564 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2593 transitions. [2022-01-18 03:10:43,564 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 03:10:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2593 transitions. [2022-01-18 03:10:43,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:43,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:43,565 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 03:10:43,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-18 03:10:43,565 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:43,565 INFO L85 PathProgramCache]: Analyzing trace with hash -64673636, now seen corresponding path program 62 times [2022-01-18 03:10:43,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:43,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583937840] [2022-01-18 03:10:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:43,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:43,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:43,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583937840] [2022-01-18 03:10:43,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583937840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:43,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:43,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:43,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233334297] [2022-01-18 03:10:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:43,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:43,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:43,882 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 03:10:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:44,908 INFO L93 Difference]: Finished difference Result 1304 states and 3207 transitions. [2022-01-18 03:10:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:10:44,908 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 03:10:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:44,910 INFO L225 Difference]: With dead ends: 1304 [2022-01-18 03:10:44,910 INFO L226 Difference]: Without dead ends: 1073 [2022-01-18 03:10:44,910 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 03:10:44,910 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 318 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:44,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2803 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:10:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-01-18 03:10:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1029. [2022-01-18 03:10:44,925 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 03:10:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2553 transitions. [2022-01-18 03:10:44,926 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2553 transitions. Word has length 79 [2022-01-18 03:10:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:44,926 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2553 transitions. [2022-01-18 03:10:44,926 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 03:10:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2553 transitions. [2022-01-18 03:10:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:44,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:44,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:44,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-18 03:10:44,928 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1581719678, now seen corresponding path program 63 times [2022-01-18 03:10:44,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:44,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455339845] [2022-01-18 03:10:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:44,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:45,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:45,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455339845] [2022-01-18 03:10:45,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455339845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:45,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:45,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:45,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27993421] [2022-01-18 03:10:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:45,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:45,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:45,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:45,229 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 03:10:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:46,917 INFO L93 Difference]: Finished difference Result 1345 states and 3322 transitions. [2022-01-18 03:10:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:10:46,917 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 03:10:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:46,919 INFO L225 Difference]: With dead ends: 1345 [2022-01-18 03:10:46,919 INFO L226 Difference]: Without dead ends: 1247 [2022-01-18 03:10:46,919 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 03:10:46,920 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 319 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:46,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 3141 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:10:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-01-18 03:10:46,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1089. [2022-01-18 03:10:46,929 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 03:10:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2710 transitions. [2022-01-18 03:10:46,930 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2710 transitions. Word has length 79 [2022-01-18 03:10:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:46,930 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 2710 transitions. [2022-01-18 03:10:46,930 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 03:10:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2710 transitions. [2022-01-18 03:10:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:46,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:46,932 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 03:10:46,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-18 03:10:46,932 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1396714726, now seen corresponding path program 64 times [2022-01-18 03:10:46,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:46,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285961680] [2022-01-18 03:10:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:46,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:47,226 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 03:10:47,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285961680] [2022-01-18 03:10:47,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285961680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:47,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:47,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:10:47,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395379233] [2022-01-18 03:10:47,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:47,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:10:47,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:10:47,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:10:47,227 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 03:10:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:49,378 INFO L93 Difference]: Finished difference Result 1301 states and 3205 transitions. [2022-01-18 03:10:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:10:49,379 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 03:10:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:49,380 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 03:10:49,380 INFO L226 Difference]: Without dead ends: 1166 [2022-01-18 03:10:49,380 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 03:10:49,381 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 337 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:49,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2710 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 03:10:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-18 03:10:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1065. [2022-01-18 03:10:49,388 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 03:10:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2644 transitions. [2022-01-18 03:10:49,390 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2644 transitions. Word has length 79 [2022-01-18 03:10:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:49,390 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2644 transitions. [2022-01-18 03:10:49,390 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 03:10:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2644 transitions. [2022-01-18 03:10:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:49,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:49,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:49,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-18 03:10:49,391 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1530247006, now seen corresponding path program 65 times [2022-01-18 03:10:49,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:49,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548308568] [2022-01-18 03:10:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:49,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:49,675 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 03:10:49,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:49,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548308568] [2022-01-18 03:10:49,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548308568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:49,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:49,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:10:49,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512574832] [2022-01-18 03:10:49,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:49,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:10:49,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:10:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:10:49,676 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 03:10:50,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:50,621 INFO L93 Difference]: Finished difference Result 1265 states and 3106 transitions. [2022-01-18 03:10:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:10:50,621 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 03:10:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:50,622 INFO L225 Difference]: With dead ends: 1265 [2022-01-18 03:10:50,622 INFO L226 Difference]: Without dead ends: 1085 [2022-01-18 03:10:50,623 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 03:10:50,623 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 310 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:50,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2487 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:10:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-01-18 03:10:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1041. [2022-01-18 03:10:50,631 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 03:10:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 2582 transitions. [2022-01-18 03:10:50,632 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 2582 transitions. Word has length 79 [2022-01-18 03:10:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:50,633 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 2582 transitions. [2022-01-18 03:10:50,633 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 03:10:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 2582 transitions. [2022-01-18 03:10:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:50,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:50,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:50,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-18 03:10:50,634 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -779228170, now seen corresponding path program 66 times [2022-01-18 03:10:50,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:50,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143886481] [2022-01-18 03:10:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:50,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:50,942 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 03:10:50,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:50,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143886481] [2022-01-18 03:10:50,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143886481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:50,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:50,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:10:50,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978955779] [2022-01-18 03:10:50,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:50,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:10:50,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:50,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:10:50,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:10:50,943 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 03:10:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:51,756 INFO L93 Difference]: Finished difference Result 1288 states and 3163 transitions. [2022-01-18 03:10:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:10:51,756 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 03:10:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:51,757 INFO L225 Difference]: With dead ends: 1288 [2022-01-18 03:10:51,757 INFO L226 Difference]: Without dead ends: 1069 [2022-01-18 03:10:51,757 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 03:10:51,759 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 307 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:51,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2499 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:10:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-01-18 03:10:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1037. [2022-01-18 03:10:51,767 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 03:10:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 2571 transitions. [2022-01-18 03:10:51,768 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 2571 transitions. Word has length 79 [2022-01-18 03:10:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:51,768 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 2571 transitions. [2022-01-18 03:10:51,768 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 03:10:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 2571 transitions. [2022-01-18 03:10:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:51,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:51,769 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 03:10:51,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-18 03:10:51,770 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:51,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1175838728, now seen corresponding path program 67 times [2022-01-18 03:10:51,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:51,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77330251] [2022-01-18 03:10:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:51,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:52,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:52,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77330251] [2022-01-18 03:10:52,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77330251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:52,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:52,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:10:52,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194923522] [2022-01-18 03:10:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:52,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:10:52,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:10:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:10:52,036 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 03:10:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:52,896 INFO L93 Difference]: Finished difference Result 1349 states and 3312 transitions. [2022-01-18 03:10:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:10:52,896 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 03:10:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:52,898 INFO L225 Difference]: With dead ends: 1349 [2022-01-18 03:10:52,898 INFO L226 Difference]: Without dead ends: 1064 [2022-01-18 03:10:52,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=1645, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:10:52,898 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 03:10:52,898 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 03:10:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2022-01-18 03:10:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1033. [2022-01-18 03:10:52,906 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 03:10:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 2564 transitions. [2022-01-18 03:10:52,907 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 2564 transitions. Word has length 79 [2022-01-18 03:10:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:52,908 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 2564 transitions. [2022-01-18 03:10:52,908 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 03:10:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 2564 transitions. [2022-01-18 03:10:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:52,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:52,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:52,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-18 03:10:52,909 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1728401762, now seen corresponding path program 68 times [2022-01-18 03:10:52,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:52,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088510705] [2022-01-18 03:10:52,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:52,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:53,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:53,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088510705] [2022-01-18 03:10:53,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088510705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:53,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:53,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:10:53,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780884309] [2022-01-18 03:10:53,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:53,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:10:53,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:53,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:10:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:10:53,185 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 03:10:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:53,956 INFO L93 Difference]: Finished difference Result 1287 states and 3192 transitions. [2022-01-18 03:10:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:10:53,957 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 03:10:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:53,958 INFO L225 Difference]: With dead ends: 1287 [2022-01-18 03:10:53,958 INFO L226 Difference]: Without dead ends: 1157 [2022-01-18 03:10:53,959 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 03:10:53,959 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 260 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:53,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 2284 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:10:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2022-01-18 03:10:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1101. [2022-01-18 03:10:53,968 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 03:10:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2743 transitions. [2022-01-18 03:10:53,969 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2743 transitions. Word has length 79 [2022-01-18 03:10:53,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:53,969 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 2743 transitions. [2022-01-18 03:10:53,969 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 03:10:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2743 transitions. [2022-01-18 03:10:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:53,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:53,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:53,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-18 03:10:53,971 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:53,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1713174368, now seen corresponding path program 69 times [2022-01-18 03:10:53,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:53,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765877662] [2022-01-18 03:10:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:53,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:54,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:54,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765877662] [2022-01-18 03:10:54,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765877662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:54,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:54,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:10:54,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763811516] [2022-01-18 03:10:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:54,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:10:54,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:54,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:10:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:10:54,268 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 03:10:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:55,050 INFO L93 Difference]: Finished difference Result 1282 states and 3172 transitions. [2022-01-18 03:10:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 03:10:55,050 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 03:10:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:55,052 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 03:10:55,052 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 03:10:55,052 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 03:10:55,052 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 267 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:55,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2349 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:10:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 03:10:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1105. [2022-01-18 03:10:55,061 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 03:10:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2750 transitions. [2022-01-18 03:10:55,063 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2750 transitions. Word has length 79 [2022-01-18 03:10:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:55,063 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2750 transitions. [2022-01-18 03:10:55,063 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 03:10:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2750 transitions. [2022-01-18 03:10:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:55,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:55,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:55,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-18 03:10:55,064 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1867555650, now seen corresponding path program 70 times [2022-01-18 03:10:55,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:55,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768899580] [2022-01-18 03:10:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:55,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:55,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:55,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768899580] [2022-01-18 03:10:55,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768899580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:55,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:55,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:10:55,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036711003] [2022-01-18 03:10:55,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:55,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:10:55,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:10:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:10:55,342 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 03:10:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:56,135 INFO L93 Difference]: Finished difference Result 1250 states and 3088 transitions. [2022-01-18 03:10:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:10:56,135 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 03:10:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:56,136 INFO L225 Difference]: With dead ends: 1250 [2022-01-18 03:10:56,137 INFO L226 Difference]: Without dead ends: 1137 [2022-01-18 03:10:56,137 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 03:10:56,137 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 279 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:56,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2162 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:10:56,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-01-18 03:10:56,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1093. [2022-01-18 03:10:56,146 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 03:10:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2721 transitions. [2022-01-18 03:10:56,147 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2721 transitions. Word has length 79 [2022-01-18 03:10:56,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:56,147 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2721 transitions. [2022-01-18 03:10:56,147 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 03:10:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2721 transitions. [2022-01-18 03:10:56,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:56,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:56,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:56,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-18 03:10:56,149 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:56,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1308597058, now seen corresponding path program 71 times [2022-01-18 03:10:56,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:56,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476092576] [2022-01-18 03:10:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:56,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:56,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:56,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476092576] [2022-01-18 03:10:56,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476092576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:56,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:56,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:10:56,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379491568] [2022-01-18 03:10:56,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:56,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:10:56,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:10:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:10:56,420 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 03:10:59,172 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 03:10:59,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:59,308 INFO L93 Difference]: Finished difference Result 1300 states and 3213 transitions. [2022-01-18 03:10:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 03:10:59,308 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 03:10:59,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:59,310 INFO L225 Difference]: With dead ends: 1300 [2022-01-18 03:10:59,310 INFO L226 Difference]: Without dead ends: 1202 [2022-01-18 03:10:59,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 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 03:10:59,310 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 290 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:59,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2395 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 03:10:59,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-01-18 03:10:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1117. [2022-01-18 03:10:59,319 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 03:10:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-01-18 03:10:59,321 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-01-18 03:10:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:59,321 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-01-18 03:10:59,321 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 03:10:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-01-18 03:10:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:10:59,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:59,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:10:59,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-18 03:10:59,322 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash 7935834, now seen corresponding path program 72 times [2022-01-18 03:10:59,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:59,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118564572] [2022-01-18 03:10:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:59,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:59,571 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 03:10:59,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:59,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118564572] [2022-01-18 03:10:59,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118564572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:10:59,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:10:59,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:10:59,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43843953] [2022-01-18 03:10:59,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:10:59,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:10:59,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:10:59,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:10:59,572 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 03:11:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:00,363 INFO L93 Difference]: Finished difference Result 1268 states and 3125 transitions. [2022-01-18 03:11:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:11:00,364 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 03:11:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:00,365 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 03:11:00,365 INFO L226 Difference]: Without dead ends: 1117 [2022-01-18 03:11:00,365 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 03:11:00,366 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 271 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:00,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2499 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-01-18 03:11:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1077. [2022-01-18 03:11:00,374 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 03:11:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-01-18 03:11:00,376 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-01-18 03:11:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:00,376 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-01-18 03:11:00,376 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 03:11:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-01-18 03:11:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:00,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:00,377 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 03:11:00,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-18 03:11:00,377 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 862026942, now seen corresponding path program 73 times [2022-01-18 03:11:00,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:00,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359063819] [2022-01-18 03:11:00,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:00,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:00,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:00,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359063819] [2022-01-18 03:11:00,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359063819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:00,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:00,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:00,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083068365] [2022-01-18 03:11:00,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:00,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:00,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:00,662 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 03:11:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:01,704 INFO L93 Difference]: Finished difference Result 1335 states and 3299 transitions. [2022-01-18 03:11:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:11:01,704 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 03:11:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:01,706 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 03:11:01,706 INFO L226 Difference]: Without dead ends: 1237 [2022-01-18 03:11:01,706 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 03:11:01,706 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 281 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:01,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2779 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:01,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-01-18 03:11:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1105. [2022-01-18 03:11:01,715 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 03:11:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-01-18 03:11:01,716 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-01-18 03:11:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:01,716 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-01-18 03:11:01,716 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 03:11:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-01-18 03:11:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:01,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:01,720 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 03:11:01,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-18 03:11:01,720 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:01,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2116407462, now seen corresponding path program 74 times [2022-01-18 03:11:01,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:01,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069176812] [2022-01-18 03:11:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:01,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:02,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:02,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069176812] [2022-01-18 03:11:02,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069176812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:02,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:02,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:02,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210904594] [2022-01-18 03:11:02,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:02,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:02,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:02,019 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 03:11:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:03,006 INFO L93 Difference]: Finished difference Result 1291 states and 3182 transitions. [2022-01-18 03:11:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:11:03,006 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 03:11:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:03,008 INFO L225 Difference]: With dead ends: 1291 [2022-01-18 03:11:03,008 INFO L226 Difference]: Without dead ends: 1156 [2022-01-18 03:11:03,008 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 03:11:03,008 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 283 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:03,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2768 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-01-18 03:11:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1081. [2022-01-18 03:11:03,017 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 03:11:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2684 transitions. [2022-01-18 03:11:03,018 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2684 transitions. Word has length 79 [2022-01-18 03:11:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:03,018 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2684 transitions. [2022-01-18 03:11:03,019 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 03:11:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2684 transitions. [2022-01-18 03:11:03,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:03,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:03,020 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 03:11:03,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-18 03:11:03,020 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1048044804, now seen corresponding path program 75 times [2022-01-18 03:11:03,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:03,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530868572] [2022-01-18 03:11:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:03,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:03,278 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 03:11:03,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:03,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530868572] [2022-01-18 03:11:03,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530868572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:03,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:03,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:03,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111235133] [2022-01-18 03:11:03,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:03,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:03,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:03,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:03,279 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 03:11:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:04,100 INFO L93 Difference]: Finished difference Result 1279 states and 3149 transitions. [2022-01-18 03:11:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:11:04,101 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 03:11:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:04,102 INFO L225 Difference]: With dead ends: 1279 [2022-01-18 03:11:04,102 INFO L226 Difference]: Without dead ends: 1109 [2022-01-18 03:11:04,102 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 03:11:04,102 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 303 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:04,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2578 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-01-18 03:11:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1069. [2022-01-18 03:11:04,110 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 03:11:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 2655 transitions. [2022-01-18 03:11:04,111 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 2655 transitions. Word has length 79 [2022-01-18 03:11:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:04,111 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 2655 transitions. [2022-01-18 03:11:04,111 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 03:11:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 2655 transitions. [2022-01-18 03:11:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:04,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:04,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:04,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-18 03:11:04,113 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 926730080, now seen corresponding path program 76 times [2022-01-18 03:11:04,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:04,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124446399] [2022-01-18 03:11:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:04,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:04,404 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 03:11:04,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:04,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124446399] [2022-01-18 03:11:04,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124446399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:04,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:04,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:04,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710108806] [2022-01-18 03:11:04,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:04,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:04,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:04,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:04,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:04,405 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 03:11:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:06,192 INFO L93 Difference]: Finished difference Result 1333 states and 3285 transitions. [2022-01-18 03:11:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:11:06,193 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 03:11:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:06,194 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 03:11:06,194 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 03:11:06,195 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 03:11:06,195 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 272 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:06,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2968 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 03:11:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 03:11:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1117. [2022-01-18 03:11:06,204 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 03:11:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2779 transitions. [2022-01-18 03:11:06,206 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2779 transitions. Word has length 79 [2022-01-18 03:11:06,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:06,206 INFO L470 AbstractCegarLoop]: Abstraction has 1117 states and 2779 transitions. [2022-01-18 03:11:06,206 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 03:11:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2779 transitions. [2022-01-18 03:11:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:06,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:06,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:06,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-18 03:11:06,207 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2051704324, now seen corresponding path program 77 times [2022-01-18 03:11:06,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:06,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52751385] [2022-01-18 03:11:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:06,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:06,461 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 03:11:06,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:06,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52751385] [2022-01-18 03:11:06,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52751385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:06,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:06,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:06,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352095659] [2022-01-18 03:11:06,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:06,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:06,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:06,463 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 03:11:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:07,571 INFO L93 Difference]: Finished difference Result 1301 states and 3197 transitions. [2022-01-18 03:11:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:11:07,571 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 03:11:07,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:07,572 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 03:11:07,572 INFO L226 Difference]: Without dead ends: 1166 [2022-01-18 03:11:07,572 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 03:11:07,573 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 287 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:07,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2805 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:11:07,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-18 03:11:07,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1093. [2022-01-18 03:11:07,581 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 03:11:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 2713 transitions. [2022-01-18 03:11:07,582 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 2713 transitions. Word has length 79 [2022-01-18 03:11:07,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:07,582 INFO L470 AbstractCegarLoop]: Abstraction has 1093 states and 2713 transitions. [2022-01-18 03:11:07,582 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 03:11:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 2713 transitions. [2022-01-18 03:11:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:07,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:07,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:07,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-18 03:11:07,583 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash 875257408, now seen corresponding path program 78 times [2022-01-18 03:11:07,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045534230] [2022-01-18 03:11:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:07,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:07,850 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 03:11:07,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:07,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045534230] [2022-01-18 03:11:07,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045534230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:07,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:07,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:07,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224819335] [2022-01-18 03:11:07,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:07,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:07,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:07,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:07,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:07,851 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 03:11:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:08,641 INFO L93 Difference]: Finished difference Result 1277 states and 3131 transitions. [2022-01-18 03:11:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:11:08,642 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 03:11:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:08,643 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 03:11:08,643 INFO L226 Difference]: Without dead ends: 1081 [2022-01-18 03:11:08,643 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 03:11:08,643 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 286 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:08,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2449 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:08,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-01-18 03:11:08,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1053. [2022-01-18 03:11:08,652 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 03:11:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-01-18 03:11:08,653 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-01-18 03:11:08,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:08,653 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-01-18 03:11:08,653 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 03:11:08,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-01-18 03:11:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:08,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:08,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:08,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-18 03:11:08,654 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash 951326560, now seen corresponding path program 79 times [2022-01-18 03:11:08,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:08,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800761457] [2022-01-18 03:11:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:08,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:08,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800761457] [2022-01-18 03:11:08,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800761457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:08,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:08,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:11:08,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879816991] [2022-01-18 03:11:08,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:08,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:11:08,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:08,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:11:08,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:11:08,949 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 03:11:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:10,796 INFO L93 Difference]: Finished difference Result 1365 states and 3369 transitions. [2022-01-18 03:11:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:11:10,796 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 03:11:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:10,798 INFO L225 Difference]: With dead ends: 1365 [2022-01-18 03:11:10,798 INFO L226 Difference]: Without dead ends: 1267 [2022-01-18 03:11:10,799 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 03:11:10,799 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 323 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:10,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2713 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 03:11:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-18 03:11:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1105. [2022-01-18 03:11:10,814 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 03:11:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2746 transitions. [2022-01-18 03:11:10,816 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2746 transitions. Word has length 79 [2022-01-18 03:11:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:10,816 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2746 transitions. [2022-01-18 03:11:10,816 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 03:11:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2746 transitions. [2022-01-18 03:11:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:10,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:10,817 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 03:11:10,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-18 03:11:10,817 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2027107844, now seen corresponding path program 80 times [2022-01-18 03:11:10,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:10,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159022219] [2022-01-18 03:11:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:10,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:11,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:11,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159022219] [2022-01-18 03:11:11,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159022219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:11,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:11,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:11:11,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339885620] [2022-01-18 03:11:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:11,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:11:11,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:11:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:11:11,084 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 03:11:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:12,228 INFO L93 Difference]: Finished difference Result 1321 states and 3252 transitions. [2022-01-18 03:11:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:11:12,228 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 03:11:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:12,230 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 03:11:12,230 INFO L226 Difference]: Without dead ends: 1186 [2022-01-18 03:11:12,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:11:12,230 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 309 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:12,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 3110 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:11:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-01-18 03:11:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1081. [2022-01-18 03:11:12,239 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 03:11:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2680 transitions. [2022-01-18 03:11:12,241 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2680 transitions. Word has length 79 [2022-01-18 03:11:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:12,241 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2680 transitions. [2022-01-18 03:11:12,241 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 03:11:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2680 transitions. [2022-01-18 03:11:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:12,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:12,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:12,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-18 03:11:12,242 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash 899853888, now seen corresponding path program 81 times [2022-01-18 03:11:12,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:12,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782761794] [2022-01-18 03:11:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:12,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:12,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:12,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782761794] [2022-01-18 03:11:12,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782761794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:12,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:12,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:12,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605963050] [2022-01-18 03:11:12,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:12,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:12,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:12,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:12,501 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 03:11:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:13,422 INFO L93 Difference]: Finished difference Result 1285 states and 3153 transitions. [2022-01-18 03:11:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:11:13,422 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 03:11:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:13,424 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 03:11:13,424 INFO L226 Difference]: Without dead ends: 1105 [2022-01-18 03:11:13,424 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 03:11:13,424 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 284 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:13,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2755 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-01-18 03:11:13,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1057. [2022-01-18 03:11:13,438 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 03:11:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2618 transitions. [2022-01-18 03:11:13,439 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2618 transitions. Word has length 79 [2022-01-18 03:11:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:13,439 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2618 transitions. [2022-01-18 03:11:13,439 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 03:11:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2618 transitions. [2022-01-18 03:11:13,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:13,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:13,440 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 03:11:13,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-18 03:11:13,440 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:13,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1409621288, now seen corresponding path program 82 times [2022-01-18 03:11:13,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:13,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447093790] [2022-01-18 03:11:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:13,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:13,753 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 03:11:13,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:13,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447093790] [2022-01-18 03:11:13,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447093790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:13,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:13,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:13,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81553727] [2022-01-18 03:11:13,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:13,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:13,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:13,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:13,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:13,754 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 03:11:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:14,511 INFO L93 Difference]: Finished difference Result 1300 states and 3188 transitions. [2022-01-18 03:11:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:11:14,511 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 03:11:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:14,512 INFO L225 Difference]: With dead ends: 1300 [2022-01-18 03:11:14,512 INFO L226 Difference]: Without dead ends: 1073 [2022-01-18 03:11:14,513 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 03:11:14,513 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 286 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:14,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2402 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-01-18 03:11:14,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1045. [2022-01-18 03:11:14,520 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 03:11:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 2585 transitions. [2022-01-18 03:11:14,522 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 2585 transitions. Word has length 79 [2022-01-18 03:11:14,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:14,522 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 2585 transitions. [2022-01-18 03:11:14,522 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 03:11:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 2585 transitions. [2022-01-18 03:11:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:14,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:14,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:14,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-18 03:11:14,523 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -944710466, now seen corresponding path program 83 times [2022-01-18 03:11:14,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:14,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854757860] [2022-01-18 03:11:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:14,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:14,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:14,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854757860] [2022-01-18 03:11:14,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854757860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:14,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:14,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:11:14,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358910659] [2022-01-18 03:11:14,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:14,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:11:14,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:14,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:11:14,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:11:14,826 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 03:11:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:17,111 INFO L93 Difference]: Finished difference Result 1361 states and 3354 transitions. [2022-01-18 03:11:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:11:17,111 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 03:11:17,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:17,113 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 03:11:17,113 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 03:11:17,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:11:17,113 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 344 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:17,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 2700 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 03:11:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 03:11:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1105. [2022-01-18 03:11:17,128 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 03:11:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 2742 transitions. [2022-01-18 03:11:17,129 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 2742 transitions. Word has length 79 [2022-01-18 03:11:17,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:17,129 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 2742 transitions. [2022-01-18 03:11:17,129 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 03:11:17,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 2742 transitions. [2022-01-18 03:11:17,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:17,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:17,131 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 03:11:17,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-18 03:11:17,131 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:17,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash 371822426, now seen corresponding path program 84 times [2022-01-18 03:11:17,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:17,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330101280] [2022-01-18 03:11:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:17,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:17,401 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 03:11:17,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:17,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330101280] [2022-01-18 03:11:17,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330101280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:17,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:17,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:11:17,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35479228] [2022-01-18 03:11:17,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:17,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:11:17,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:11:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:11:17,402 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 03:11:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:18,747 INFO L93 Difference]: Finished difference Result 1317 states and 3237 transitions. [2022-01-18 03:11:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:11:18,748 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 03:11:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:18,749 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 03:11:18,749 INFO L226 Difference]: Without dead ends: 1182 [2022-01-18 03:11:18,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=2730, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:11:18,750 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 346 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 03:11:18,750 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 03:11:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-18 03:11:18,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1081. [2022-01-18 03:11:18,758 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 03:11:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 2676 transitions. [2022-01-18 03:11:18,759 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 2676 transitions. Word has length 79 [2022-01-18 03:11:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:18,760 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 2676 transitions. [2022-01-18 03:11:18,760 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 03:11:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 2676 transitions. [2022-01-18 03:11:18,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:18,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:18,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:18,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-18 03:11:18,761 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:18,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:18,761 INFO L85 PathProgramCache]: Analyzing trace with hash -996183138, now seen corresponding path program 85 times [2022-01-18 03:11:18,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:18,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142869770] [2022-01-18 03:11:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:18,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:19,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:19,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142869770] [2022-01-18 03:11:19,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142869770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:19,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:19,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:19,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911458337] [2022-01-18 03:11:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:19,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:19,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:19,018 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 03:11:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:19,951 INFO L93 Difference]: Finished difference Result 1281 states and 3138 transitions. [2022-01-18 03:11:19,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:11:19,951 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 03:11:19,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:19,953 INFO L225 Difference]: With dead ends: 1281 [2022-01-18 03:11:19,953 INFO L226 Difference]: Without dead ends: 1101 [2022-01-18 03:11:19,959 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 03:11:19,960 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 289 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 03:11:19,960 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 03:11:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-01-18 03:11:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1057. [2022-01-18 03:11:19,968 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 03:11:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 2614 transitions. [2022-01-18 03:11:19,969 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 2614 transitions. Word has length 79 [2022-01-18 03:11:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:19,969 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 2614 transitions. [2022-01-18 03:11:19,970 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 03:11:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 2614 transitions. [2022-01-18 03:11:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:19,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:19,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:19,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-18 03:11:19,971 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:19,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash 989308982, now seen corresponding path program 86 times [2022-01-18 03:11:19,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:19,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124412443] [2022-01-18 03:11:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:19,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:20,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:20,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124412443] [2022-01-18 03:11:20,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124412443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:20,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:20,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:20,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637388703] [2022-01-18 03:11:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:20,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:20,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:20,241 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 03:11:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:21,003 INFO L93 Difference]: Finished difference Result 1304 states and 3195 transitions. [2022-01-18 03:11:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:11:21,003 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 03:11:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:21,005 INFO L225 Difference]: With dead ends: 1304 [2022-01-18 03:11:21,005 INFO L226 Difference]: Without dead ends: 1061 [2022-01-18 03:11:21,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 03:11:21,005 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 300 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:21,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2341 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-01-18 03:11:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-01-18 03:11:21,014 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 03:11:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-01-18 03:11:21,015 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-01-18 03:11:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:21,015 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-01-18 03:11:21,016 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 03:11:21,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-01-18 03:11:21,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:21,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:21,017 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 03:11:21,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-18 03:11:21,017 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:21,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1571781226, now seen corresponding path program 87 times [2022-01-18 03:11:21,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:21,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607996741] [2022-01-18 03:11:21,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:21,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:21,281 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 03:11:21,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:21,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607996741] [2022-01-18 03:11:21,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607996741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:21,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:21,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:21,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978730747] [2022-01-18 03:11:21,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:21,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:21,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:21,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:21,282 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 03:11:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:22,050 INFO L93 Difference]: Finished difference Result 1298 states and 3178 transitions. [2022-01-18 03:11:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:11:22,050 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 03:11:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:22,052 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 03:11:22,052 INFO L226 Difference]: Without dead ends: 1029 [2022-01-18 03:11:22,052 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 03:11:22,052 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 321 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:22,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2392 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-01-18 03:11:22,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1013. [2022-01-18 03:11:22,060 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 03:11:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2509 transitions. [2022-01-18 03:11:22,061 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2509 transitions. Word has length 79 [2022-01-18 03:11:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:22,061 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2509 transitions. [2022-01-18 03:11:22,061 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 03:11:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2509 transitions. [2022-01-18 03:11:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:22,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:22,063 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 03:11:22,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-18 03:11:22,063 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash 881796286, now seen corresponding path program 88 times [2022-01-18 03:11:22,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:22,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815586881] [2022-01-18 03:11:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:22,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:22,367 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 03:11:22,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:22,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815586881] [2022-01-18 03:11:22,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815586881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:22,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:22,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:11:22,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374861600] [2022-01-18 03:11:22,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:22,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:11:22,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:11:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:11:22,368 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 03:11:25,719 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:11:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:25,996 INFO L93 Difference]: Finished difference Result 1321 states and 3256 transitions. [2022-01-18 03:11:25,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:11:25,996 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 03:11:25,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:25,998 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 03:11:25,998 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 03:11:25,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 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 03:11:25,998 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 343 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:25,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2982 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1145 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 03:11:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 03:11:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1077. [2022-01-18 03:11:26,007 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 03:11:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2677 transitions. [2022-01-18 03:11:26,008 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2677 transitions. Word has length 79 [2022-01-18 03:11:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:26,008 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 2677 transitions. [2022-01-18 03:11:26,008 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 03:11:26,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2677 transitions. [2022-01-18 03:11:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:26,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:26,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:26,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-18 03:11:26,009 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:26,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:26,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2096638118, now seen corresponding path program 89 times [2022-01-18 03:11:26,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:26,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490971536] [2022-01-18 03:11:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:26,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:26,294 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 03:11:26,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:26,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490971536] [2022-01-18 03:11:26,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490971536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:26,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:26,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:11:26,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467905768] [2022-01-18 03:11:26,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:26,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:11:26,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:11:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:11:26,295 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 03:11:27,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:27,660 INFO L93 Difference]: Finished difference Result 1277 states and 3139 transitions. [2022-01-18 03:11:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:11:27,660 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 03:11:27,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:27,661 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 03:11:27,661 INFO L226 Difference]: Without dead ends: 1142 [2022-01-18 03:11:27,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2838, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:11:27,662 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 330 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:27,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2969 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:11:27,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-01-18 03:11:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1053. [2022-01-18 03:11:27,670 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 03:11:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 2611 transitions. [2022-01-18 03:11:27,671 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 2611 transitions. Word has length 79 [2022-01-18 03:11:27,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:27,672 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 2611 transitions. [2022-01-18 03:11:27,672 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 03:11:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 2611 transitions. [2022-01-18 03:11:27,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:27,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:27,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:27,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-18 03:11:27,673 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:27,673 INFO L85 PathProgramCache]: Analyzing trace with hash 830323614, now seen corresponding path program 90 times [2022-01-18 03:11:27,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:27,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419751266] [2022-01-18 03:11:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:27,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:27,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:27,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419751266] [2022-01-18 03:11:27,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419751266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:27,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:27,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:11:27,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157507431] [2022-01-18 03:11:27,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:27,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:11:27,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:11:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:11:27,965 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 03:11:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:28,921 INFO L93 Difference]: Finished difference Result 1241 states and 3040 transitions. [2022-01-18 03:11:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:11:28,921 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 03:11:28,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:28,922 INFO L225 Difference]: With dead ends: 1241 [2022-01-18 03:11:28,923 INFO L226 Difference]: Without dead ends: 1061 [2022-01-18 03:11:28,923 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 03:11:28,923 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 316 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:28,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2888 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-01-18 03:11:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1029. [2022-01-18 03:11:28,931 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 03:11:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 2549 transitions. [2022-01-18 03:11:28,932 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 2549 transitions. Word has length 79 [2022-01-18 03:11:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:28,932 INFO L470 AbstractCegarLoop]: Abstraction has 1029 states and 2549 transitions. [2022-01-18 03:11:28,932 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 03:11:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 2549 transitions. [2022-01-18 03:11:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:28,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:28,933 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 03:11:28,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-18 03:11:28,933 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:28,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:28,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1479151562, now seen corresponding path program 91 times [2022-01-18 03:11:28,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:28,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691039224] [2022-01-18 03:11:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:28,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:29,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:29,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691039224] [2022-01-18 03:11:29,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691039224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:29,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:29,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:29,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721305716] [2022-01-18 03:11:29,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:29,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:29,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:29,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:29,205 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 03:11:29,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:29,976 INFO L93 Difference]: Finished difference Result 1264 states and 3097 transitions. [2022-01-18 03:11:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:11:29,976 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 03:11:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:29,977 INFO L225 Difference]: With dead ends: 1264 [2022-01-18 03:11:29,977 INFO L226 Difference]: Without dead ends: 1045 [2022-01-18 03:11:29,978 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 03:11:29,978 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 300 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:29,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2477 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-01-18 03:11:29,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1025. [2022-01-18 03:11:29,985 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 03:11:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 2538 transitions. [2022-01-18 03:11:29,986 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 2538 transitions. Word has length 79 [2022-01-18 03:11:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:29,987 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 2538 transitions. [2022-01-18 03:11:29,987 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 03:11:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 2538 transitions. [2022-01-18 03:11:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:29,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:29,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:29,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-18 03:11:29,988 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:29,988 INFO L85 PathProgramCache]: Analyzing trace with hash 475915336, now seen corresponding path program 92 times [2022-01-18 03:11:29,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:29,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799043520] [2022-01-18 03:11:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:29,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:30,257 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 03:11:30,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799043520] [2022-01-18 03:11:30,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799043520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:30,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:30,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:30,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517046584] [2022-01-18 03:11:30,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:30,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:30,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:30,259 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 03:11:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:31,079 INFO L93 Difference]: Finished difference Result 1294 states and 3167 transitions. [2022-01-18 03:11:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:11:31,079 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 03:11:31,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:31,080 INFO L225 Difference]: With dead ends: 1294 [2022-01-18 03:11:31,080 INFO L226 Difference]: Without dead ends: 1033 [2022-01-18 03:11:31,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=1806, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:11:31,081 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 337 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:31,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2536 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-01-18 03:11:31,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1017. [2022-01-18 03:11:31,088 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 03:11:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 2516 transitions. [2022-01-18 03:11:31,089 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 2516 transitions. Word has length 79 [2022-01-18 03:11:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:31,089 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 2516 transitions. [2022-01-18 03:11:31,089 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 03:11:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 2516 transitions. [2022-01-18 03:11:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:31,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:31,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:31,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-18 03:11:31,091 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1425757590, now seen corresponding path program 93 times [2022-01-18 03:11:31,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:31,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134719243] [2022-01-18 03:11:31,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:31,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:31,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:31,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134719243] [2022-01-18 03:11:31,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134719243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:31,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:31,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:31,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187756006] [2022-01-18 03:11:31,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:31,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:31,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:31,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:31,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:31,370 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 03:11:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:32,129 INFO L93 Difference]: Finished difference Result 1289 states and 3147 transitions. [2022-01-18 03:11:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:11:32,129 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 03:11:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:32,130 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 03:11:32,130 INFO L226 Difference]: Without dead ends: 991 [2022-01-18 03:11:32,130 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 03:11:32,131 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 311 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:32,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2683 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-18 03:11:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-01-18 03:11:32,138 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 03:11:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 2465 transitions. [2022-01-18 03:11:32,139 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 2465 transitions. Word has length 79 [2022-01-18 03:11:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:32,139 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 2465 transitions. [2022-01-18 03:11:32,139 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 03:11:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 2465 transitions. [2022-01-18 03:11:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:32,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:32,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:32,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-18 03:11:32,141 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:32,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash 192804102, now seen corresponding path program 94 times [2022-01-18 03:11:32,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:32,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526157596] [2022-01-18 03:11:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:32,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:32,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:32,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526157596] [2022-01-18 03:11:32,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526157596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:32,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:32,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:32,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116288714] [2022-01-18 03:11:32,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:32,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:32,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:32,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:32,398 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 03:11:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:33,266 INFO L93 Difference]: Finished difference Result 1337 states and 3346 transitions. [2022-01-18 03:11:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:11:33,267 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 03:11:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:33,268 INFO L225 Difference]: With dead ends: 1337 [2022-01-18 03:11:33,268 INFO L226 Difference]: Without dead ends: 1207 [2022-01-18 03:11:33,268 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 03:11:33,269 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 254 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:33,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2313 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-18 03:11:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1099. [2022-01-18 03:11:33,277 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 03:11:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2754 transitions. [2022-01-18 03:11:33,278 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2754 transitions. Word has length 79 [2022-01-18 03:11:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:33,279 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2754 transitions. [2022-01-18 03:11:33,279 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 03:11:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2754 transitions. [2022-01-18 03:11:33,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:33,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:33,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:33,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-18 03:11:33,280 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -660587064, now seen corresponding path program 95 times [2022-01-18 03:11:33,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:33,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617328517] [2022-01-18 03:11:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:33,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:33,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:33,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617328517] [2022-01-18 03:11:33,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617328517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:33,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:33,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:33,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089966873] [2022-01-18 03:11:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:33,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:33,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:33,548 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 03:11:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:34,529 INFO L93 Difference]: Finished difference Result 1348 states and 3366 transitions. [2022-01-18 03:11:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:11:34,529 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 03:11:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:34,531 INFO L225 Difference]: With dead ends: 1348 [2022-01-18 03:11:34,531 INFO L226 Difference]: Without dead ends: 1250 [2022-01-18 03:11:34,531 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 03:11:34,531 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 333 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:34,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 2591 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-01-18 03:11:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1103. [2022-01-18 03:11:34,540 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 03:11:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2761 transitions. [2022-01-18 03:11:34,541 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2761 transitions. Word has length 79 [2022-01-18 03:11:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:34,541 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2761 transitions. [2022-01-18 03:11:34,541 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 03:11:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2761 transitions. [2022-01-18 03:11:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:34,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:34,543 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 03:11:34,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-18 03:11:34,543 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:34,543 INFO L85 PathProgramCache]: Analyzing trace with hash 53650214, now seen corresponding path program 96 times [2022-01-18 03:11:34,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:34,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072832338] [2022-01-18 03:11:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:34,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:34,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:34,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072832338] [2022-01-18 03:11:34,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072832338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:34,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:34,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:34,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299484971] [2022-01-18 03:11:34,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:34,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:34,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:34,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:34,810 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 03:11:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:35,773 INFO L93 Difference]: Finished difference Result 1331 states and 3317 transitions. [2022-01-18 03:11:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:11:35,774 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 03:11:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:35,775 INFO L225 Difference]: With dead ends: 1331 [2022-01-18 03:11:35,775 INFO L226 Difference]: Without dead ends: 1218 [2022-01-18 03:11:35,776 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 03:11:35,776 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 340 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:35,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2604 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-01-18 03:11:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1091. [2022-01-18 03:11:35,784 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 03:11:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2728 transitions. [2022-01-18 03:11:35,785 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2728 transitions. Word has length 79 [2022-01-18 03:11:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:35,785 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2728 transitions. [2022-01-18 03:11:35,786 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 03:11:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2728 transitions. [2022-01-18 03:11:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:35,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:35,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:35,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-18 03:11:35,787 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:35,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:35,787 INFO L85 PathProgramCache]: Analyzing trace with hash 379098440, now seen corresponding path program 97 times [2022-01-18 03:11:35,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:35,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447902822] [2022-01-18 03:11:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:35,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:36,044 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 03:11:36,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:36,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447902822] [2022-01-18 03:11:36,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447902822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:36,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:36,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:36,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608595620] [2022-01-18 03:11:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:36,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:36,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:36,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:36,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:36,045 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 03:11:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:36,836 INFO L93 Difference]: Finished difference Result 1309 states and 3257 transitions. [2022-01-18 03:11:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:11:36,836 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 03:11:36,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:36,838 INFO L225 Difference]: With dead ends: 1309 [2022-01-18 03:11:36,838 INFO L226 Difference]: Without dead ends: 1159 [2022-01-18 03:11:36,838 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 03:11:36,838 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 234 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:36,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 2325 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-01-18 03:11:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1087. [2022-01-18 03:11:36,847 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 03:11:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2717 transitions. [2022-01-18 03:11:36,848 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2717 transitions. Word has length 79 [2022-01-18 03:11:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:36,848 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2717 transitions. [2022-01-18 03:11:36,848 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 03:11:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2717 transitions. [2022-01-18 03:11:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:36,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:36,849 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 03:11:36,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-18 03:11:36,849 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1240680774, now seen corresponding path program 98 times [2022-01-18 03:11:36,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:36,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592630814] [2022-01-18 03:11:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:36,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:37,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592630814] [2022-01-18 03:11:37,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592630814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:37,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:37,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:37,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712338650] [2022-01-18 03:11:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:37,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:37,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:37,108 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 03:11:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:38,113 INFO L93 Difference]: Finished difference Result 1322 states and 3286 transitions. [2022-01-18 03:11:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:11:38,113 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 03:11:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:38,114 INFO L225 Difference]: With dead ends: 1322 [2022-01-18 03:11:38,114 INFO L226 Difference]: Without dead ends: 1224 [2022-01-18 03:11:38,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:11:38,115 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 297 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:38,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2396 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:11:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-01-18 03:11:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1111. [2022-01-18 03:11:38,123 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 03:11:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2775 transitions. [2022-01-18 03:11:38,124 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2775 transitions. Word has length 79 [2022-01-18 03:11:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:38,124 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2775 transitions. [2022-01-18 03:11:38,124 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 03:11:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2775 transitions. [2022-01-18 03:11:38,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:38,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:38,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:38,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-18 03:11:38,125 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:38,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:38,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1737753630, now seen corresponding path program 99 times [2022-01-18 03:11:38,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:38,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137887140] [2022-01-18 03:11:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:38,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:38,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:38,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137887140] [2022-01-18 03:11:38,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137887140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:38,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:38,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:38,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170223232] [2022-01-18 03:11:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:38,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:38,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:38,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:38,361 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 03:11:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:39,182 INFO L93 Difference]: Finished difference Result 1305 states and 3233 transitions. [2022-01-18 03:11:39,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:11:39,182 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 03:11:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:39,183 INFO L225 Difference]: With dead ends: 1305 [2022-01-18 03:11:39,183 INFO L226 Difference]: Without dead ends: 1146 [2022-01-18 03:11:39,184 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 03:11:39,184 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 286 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:39,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2372 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:39,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-01-18 03:11:39,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1063. [2022-01-18 03:11:39,192 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 03:11:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2655 transitions. [2022-01-18 03:11:39,193 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2655 transitions. Word has length 79 [2022-01-18 03:11:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:39,193 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2655 transitions. [2022-01-18 03:11:39,193 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 03:11:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2655 transitions. [2022-01-18 03:11:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:39,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:39,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:39,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-18 03:11:39,195 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:39,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:39,195 INFO L85 PathProgramCache]: Analyzing trace with hash 846263976, now seen corresponding path program 100 times [2022-01-18 03:11:39,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:39,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793895309] [2022-01-18 03:11:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:39,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:39,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:39,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793895309] [2022-01-18 03:11:39,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793895309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:39,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:39,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:39,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815092067] [2022-01-18 03:11:39,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:39,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:39,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:39,449 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 03:11:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:40,280 INFO L93 Difference]: Finished difference Result 1301 states and 3239 transitions. [2022-01-18 03:11:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:11:40,280 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 03:11:40,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:40,282 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 03:11:40,282 INFO L226 Difference]: Without dead ends: 1171 [2022-01-18 03:11:40,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=1711, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:11:40,282 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 251 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:40,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2502 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-01-18 03:11:40,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1083. [2022-01-18 03:11:40,291 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 03:11:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2702 transitions. [2022-01-18 03:11:40,292 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2702 transitions. Word has length 79 [2022-01-18 03:11:40,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:40,292 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2702 transitions. [2022-01-18 03:11:40,292 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 03:11:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2702 transitions. [2022-01-18 03:11:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:40,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:40,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:40,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-18 03:11:40,294 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:40,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash -7127190, now seen corresponding path program 101 times [2022-01-18 03:11:40,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:40,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922376431] [2022-01-18 03:11:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:40,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:40,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:40,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922376431] [2022-01-18 03:11:40,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922376431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:40,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:40,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:40,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330409039] [2022-01-18 03:11:40,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:40,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:40,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:40,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:40,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:40,580 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 03:11:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:41,475 INFO L93 Difference]: Finished difference Result 1292 states and 3208 transitions. [2022-01-18 03:11:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:11:41,475 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 03:11:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:41,476 INFO L225 Difference]: With dead ends: 1292 [2022-01-18 03:11:41,476 INFO L226 Difference]: Without dead ends: 1194 [2022-01-18 03:11:41,477 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 03:11:41,477 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 317 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:41,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2514 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-01-18 03:11:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-01-18 03:11:41,485 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 03:11:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2709 transitions. [2022-01-18 03:11:41,487 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2709 transitions. Word has length 79 [2022-01-18 03:11:41,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:41,487 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2709 transitions. [2022-01-18 03:11:41,487 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 03:11:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2709 transitions. [2022-01-18 03:11:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:41,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:41,488 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 03:11:41,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-18 03:11:41,488 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:41,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash 707110088, now seen corresponding path program 102 times [2022-01-18 03:11:41,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:41,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857256181] [2022-01-18 03:11:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:41,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:41,774 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 03:11:41,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:41,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857256181] [2022-01-18 03:11:41,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857256181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:41,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:41,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:41,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71380681] [2022-01-18 03:11:41,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:41,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:41,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:41,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:41,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:41,775 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 03:11:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:42,667 INFO L93 Difference]: Finished difference Result 1275 states and 3159 transitions. [2022-01-18 03:11:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:11:42,668 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 03:11:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:42,669 INFO L225 Difference]: With dead ends: 1275 [2022-01-18 03:11:42,669 INFO L226 Difference]: Without dead ends: 1162 [2022-01-18 03:11:42,670 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 03:11:42,670 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 286 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:42,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2430 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-01-18 03:11:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1075. [2022-01-18 03:11:42,678 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 03:11:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2684 transitions. [2022-01-18 03:11:42,679 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2684 transitions. Word has length 79 [2022-01-18 03:11:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:42,679 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2684 transitions. [2022-01-18 03:11:42,679 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 03:11:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2684 transitions. [2022-01-18 03:11:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:42,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:42,680 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 03:11:42,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-18 03:11:42,681 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1032558314, now seen corresponding path program 103 times [2022-01-18 03:11:42,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:42,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858067485] [2022-01-18 03:11:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:42,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:42,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:42,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858067485] [2022-01-18 03:11:42,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858067485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:42,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:42,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:42,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872468663] [2022-01-18 03:11:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:42,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:42,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:42,946 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 03:11:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:43,680 INFO L93 Difference]: Finished difference Result 1281 states and 3180 transitions. [2022-01-18 03:11:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:11:43,680 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 03:11:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:43,681 INFO L225 Difference]: With dead ends: 1281 [2022-01-18 03:11:43,681 INFO L226 Difference]: Without dead ends: 1131 [2022-01-18 03:11:43,682 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 03:11:43,682 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 256 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:43,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 2290 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-01-18 03:11:43,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1071. [2022-01-18 03:11:43,690 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 03:11:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2673 transitions. [2022-01-18 03:11:43,691 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2673 transitions. Word has length 79 [2022-01-18 03:11:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:43,691 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2673 transitions. [2022-01-18 03:11:43,691 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 03:11:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2673 transitions. [2022-01-18 03:11:43,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:43,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:43,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:43,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-18 03:11:43,692 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash 325977350, now seen corresponding path program 104 times [2022-01-18 03:11:43,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:43,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607760002] [2022-01-18 03:11:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:43,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:43,962 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 03:11:43,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:43,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607760002] [2022-01-18 03:11:43,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607760002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:43,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:43,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:43,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111207215] [2022-01-18 03:11:43,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:43,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:43,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:43,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:43,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:43,963 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 03:11:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:44,706 INFO L93 Difference]: Finished difference Result 1305 states and 3234 transitions. [2022-01-18 03:11:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 03:11:44,706 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 03:11:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:44,708 INFO L225 Difference]: With dead ends: 1305 [2022-01-18 03:11:44,708 INFO L226 Difference]: Without dead ends: 1103 [2022-01-18 03:11:44,708 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 03:11:44,708 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 234 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:44,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 2434 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-01-18 03:11:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-01-18 03:11:44,716 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 03:11:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2611 transitions. [2022-01-18 03:11:44,717 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2611 transitions. Word has length 79 [2022-01-18 03:11:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:44,717 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2611 transitions. [2022-01-18 03:11:44,717 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 03:11:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2611 transitions. [2022-01-18 03:11:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:44,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:44,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:44,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-18 03:11:44,718 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1521068648, now seen corresponding path program 105 times [2022-01-18 03:11:44,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:44,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569928645] [2022-01-18 03:11:44,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:44,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:44,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:44,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569928645] [2022-01-18 03:11:44,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569928645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:44,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:44,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:44,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818248356] [2022-01-18 03:11:44,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:44,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:44,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:44,984 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 03:11:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:45,985 INFO L93 Difference]: Finished difference Result 1329 states and 3316 transitions. [2022-01-18 03:11:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:11:45,986 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 03:11:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:45,987 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 03:11:45,987 INFO L226 Difference]: Without dead ends: 1199 [2022-01-18 03:11:45,987 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 03:11:45,988 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 286 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:45,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2626 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-01-18 03:11:45,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1087. [2022-01-18 03:11:45,996 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 03:11:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-01-18 03:11:45,997 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-01-18 03:11:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:45,997 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-01-18 03:11:45,997 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 03:11:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-01-18 03:11:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:45,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:45,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:45,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-18 03:11:45,998 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:45,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash 667677482, now seen corresponding path program 106 times [2022-01-18 03:11:45,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:45,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792552017] [2022-01-18 03:11:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:45,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:46,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:46,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792552017] [2022-01-18 03:11:46,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792552017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:46,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:46,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:46,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479635977] [2022-01-18 03:11:46,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:46,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:46,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:46,263 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 03:11:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:47,212 INFO L93 Difference]: Finished difference Result 1320 states and 3285 transitions. [2022-01-18 03:11:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:11:47,212 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 03:11:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:47,213 INFO L225 Difference]: With dead ends: 1320 [2022-01-18 03:11:47,213 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 03:11:47,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=2222, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:11:47,214 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 316 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:47,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2502 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 03:11:47,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1091. [2022-01-18 03:11:47,222 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 03:11:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-01-18 03:11:47,223 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-01-18 03:11:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:47,224 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-01-18 03:11:47,224 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 03:11:47,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-01-18 03:11:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:47,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:47,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:47,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-18 03:11:47,225 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1381914760, now seen corresponding path program 107 times [2022-01-18 03:11:47,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:47,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966622886] [2022-01-18 03:11:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:47,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:47,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:47,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966622886] [2022-01-18 03:11:47,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966622886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:47,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:47,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:47,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032614544] [2022-01-18 03:11:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:47,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:47,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:47,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:47,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:47,499 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 03:11:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:48,445 INFO L93 Difference]: Finished difference Result 1303 states and 3236 transitions. [2022-01-18 03:11:48,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:11:48,445 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 03:11:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:48,447 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 03:11:48,447 INFO L226 Difference]: Without dead ends: 1190 [2022-01-18 03:11:48,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=2222, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:11:48,447 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 317 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:48,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2546 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:48,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-01-18 03:11:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1079. [2022-01-18 03:11:48,455 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 03:11:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-01-18 03:11:48,456 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-01-18 03:11:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:48,456 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-01-18 03:11:48,456 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 03:11:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-01-18 03:11:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:48,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:48,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:48,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-18 03:11:48,458 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1707362986, now seen corresponding path program 108 times [2022-01-18 03:11:48,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:48,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635082703] [2022-01-18 03:11:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:48,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:48,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:48,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635082703] [2022-01-18 03:11:48,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635082703] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:48,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:48,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:48,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390463834] [2022-01-18 03:11:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:48,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:48,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:48,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:48,726 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 03:11:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:49,623 INFO L93 Difference]: Finished difference Result 1317 states and 3267 transitions. [2022-01-18 03:11:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:11:49,623 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 03:11:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:49,624 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 03:11:49,624 INFO L226 Difference]: Without dead ends: 1167 [2022-01-18 03:11:49,625 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 03:11:49,625 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 319 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:49,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2426 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-01-18 03:11:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1075. [2022-01-18 03:11:49,633 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 03:11:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:11:49,634 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:11:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:49,634 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:11:49,634 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 03:11:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:11:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:49,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:49,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:49,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-18 03:11:49,636 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:49,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1726021976, now seen corresponding path program 109 times [2022-01-18 03:11:49,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:49,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429958011] [2022-01-18 03:11:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:49,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:49,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:49,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429958011] [2022-01-18 03:11:49,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429958011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:49,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:49,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:49,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698413202] [2022-01-18 03:11:49,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:49,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:49,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:49,894 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 03:11:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:50,863 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-01-18 03:11:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:11:50,863 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 03:11:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:50,864 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 03:11:50,864 INFO L226 Difference]: Without dead ends: 1200 [2022-01-18 03:11:50,864 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 03:11:50,865 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 247 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:50,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 2411 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:11:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-01-18 03:11:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1099. [2022-01-18 03:11:50,872 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 03:11:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 03:11:50,874 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 03:11:50,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:50,874 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 03:11:50,874 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 03:11:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 03:11:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:50,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:50,875 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 03:11:50,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-18 03:11:50,875 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash -409489084, now seen corresponding path program 110 times [2022-01-18 03:11:50,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:50,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783603648] [2022-01-18 03:11:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:50,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:51,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:51,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783603648] [2022-01-18 03:11:51,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783603648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:51,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:51,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:51,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127118970] [2022-01-18 03:11:51,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:51,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:51,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:51,110 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 03:11:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:51,893 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-01-18 03:11:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 03:11:51,894 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 03:11:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:51,895 INFO L225 Difference]: With dead ends: 1266 [2022-01-18 03:11:51,895 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 03:11:51,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:11:51,896 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 269 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:51,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2390 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 03:11:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-01-18 03:11:51,903 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 03:11:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2618 transitions. [2022-01-18 03:11:51,904 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2618 transitions. Word has length 79 [2022-01-18 03:11:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:51,904 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2618 transitions. [2022-01-18 03:11:51,905 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 03:11:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2618 transitions. [2022-01-18 03:11:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:51,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:51,906 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 03:11:51,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-18 03:11:51,906 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 924168038, now seen corresponding path program 111 times [2022-01-18 03:11:51,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:51,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334709391] [2022-01-18 03:11:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:51,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:52,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:52,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334709391] [2022-01-18 03:11:52,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334709391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:52,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:52,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:52,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303016456] [2022-01-18 03:11:52,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:52,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:52,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:52,165 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 03:11:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:52,959 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-01-18 03:11:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:11:52,959 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 03:11:52,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:52,960 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 03:11:52,960 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 03:11:52,961 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 03:11:52,961 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 290 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:52,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2314 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 03:11:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-01-18 03:11:52,969 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 03:11:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-01-18 03:11:52,970 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-01-18 03:11:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:52,970 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-01-18 03:11:52,970 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 03:11:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-01-18 03:11:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:52,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:52,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:52,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-18 03:11:52,972 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash 70776872, now seen corresponding path program 112 times [2022-01-18 03:11:52,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:52,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256233465] [2022-01-18 03:11:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:52,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:53,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:53,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256233465] [2022-01-18 03:11:53,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256233465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:53,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:53,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:53,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690898307] [2022-01-18 03:11:53,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:53,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:53,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:53,226 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 03:11:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:54,026 INFO L93 Difference]: Finished difference Result 1272 states and 3149 transitions. [2022-01-18 03:11:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:11:54,026 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 03:11:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:54,027 INFO L225 Difference]: With dead ends: 1272 [2022-01-18 03:11:54,027 INFO L226 Difference]: Without dead ends: 1174 [2022-01-18 03:11:54,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:11:54,028 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 272 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:54,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2446 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:54,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-01-18 03:11:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1087. [2022-01-18 03:11:54,036 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 03:11:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-01-18 03:11:54,037 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-01-18 03:11:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:54,037 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-01-18 03:11:54,037 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 03:11:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-01-18 03:11:54,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:54,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:54,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:54,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-18 03:11:54,038 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash 785014150, now seen corresponding path program 113 times [2022-01-18 03:11:54,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:54,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313936346] [2022-01-18 03:11:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:54,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:54,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:54,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313936346] [2022-01-18 03:11:54,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313936346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:54,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:54,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:54,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414628471] [2022-01-18 03:11:54,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:54,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:54,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:54,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:54,297 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 03:11:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:55,145 INFO L93 Difference]: Finished difference Result 1240 states and 3065 transitions. [2022-01-18 03:11:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:11:55,146 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 03:11:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:55,147 INFO L225 Difference]: With dead ends: 1240 [2022-01-18 03:11:55,147 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 03:11:55,147 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 03:11:55,147 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 284 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:55,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2262 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:11:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 03:11:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-01-18 03:11:55,155 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 03:11:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:11:55,156 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:11:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:55,157 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:11:55,157 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 03:11:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:11:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:55,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:55,158 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 03:11:55,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-18 03:11:55,158 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:55,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1343972742, now seen corresponding path program 114 times [2022-01-18 03:11:55,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:55,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793539711] [2022-01-18 03:11:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:55,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:55,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:55,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793539711] [2022-01-18 03:11:55,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793539711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:55,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:55,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:55,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693215015] [2022-01-18 03:11:55,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:55,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:55,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:55,420 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 03:11:58,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:11:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:58,373 INFO L93 Difference]: Finished difference Result 1290 states and 3190 transitions. [2022-01-18 03:11:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:11:58,373 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 03:11:58,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:58,374 INFO L225 Difference]: With dead ends: 1290 [2022-01-18 03:11:58,374 INFO L226 Difference]: Without dead ends: 1192 [2022-01-18 03:11:58,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 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 03:11:58,375 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 300 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:58,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2382 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 916 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 03:11:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-01-18 03:11:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1099. [2022-01-18 03:11:58,383 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 03:11:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 03:11:58,384 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 03:11:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:58,384 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 03:11:58,384 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 03:11:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 03:11:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:58,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:58,386 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 03:11:58,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-18 03:11:58,386 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:58,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1634461662, now seen corresponding path program 115 times [2022-01-18 03:11:58,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:58,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649042133] [2022-01-18 03:11:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:58,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:58,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:58,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649042133] [2022-01-18 03:11:58,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649042133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:58,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:58,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:11:58,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175512931] [2022-01-18 03:11:58,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:58,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:11:58,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:11:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:11:58,621 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 03:11:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:11:59,398 INFO L93 Difference]: Finished difference Result 1258 states and 3102 transitions. [2022-01-18 03:11:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:11:59,398 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 03:11:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:11:59,399 INFO L225 Difference]: With dead ends: 1258 [2022-01-18 03:11:59,399 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 03:11:59,400 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 03:11:59,400 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 276 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:11:59,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2352 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:11:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 03:11:59,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1059. [2022-01-18 03:11:59,408 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 03:11:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 03:11:59,409 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 03:11:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:11:59,409 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 03:11:59,409 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 03:11:59,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 03:11:59,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:11:59,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:11:59,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:11:59,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-18 03:11:59,410 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:11:59,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:11:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash -780370554, now seen corresponding path program 116 times [2022-01-18 03:11:59,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:11:59,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946953825] [2022-01-18 03:11:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:11:59,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:11:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:11:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:11:59,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:11:59,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946953825] [2022-01-18 03:11:59,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946953825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:11:59,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:11:59,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:11:59,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594778246] [2022-01-18 03:11:59,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:11:59,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:11:59,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:11:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:11:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:11:59,675 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 03:12:00,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:00,631 INFO L93 Difference]: Finished difference Result 1309 states and 3232 transitions. [2022-01-18 03:12:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:12:00,632 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 03:12:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:00,633 INFO L225 Difference]: With dead ends: 1309 [2022-01-18 03:12:00,633 INFO L226 Difference]: Without dead ends: 1211 [2022-01-18 03:12:00,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=2134, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:12:00,633 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 289 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:00,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2634 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:12:00,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-01-18 03:12:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1087. [2022-01-18 03:12:00,642 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 03:12:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:12:00,643 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:12:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:00,643 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:12:00,643 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 03:12:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:12:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:00,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:00,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:00,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-18 03:12:00,644 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash 536162338, now seen corresponding path program 117 times [2022-01-18 03:12:00,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:00,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506219197] [2022-01-18 03:12:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:00,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:00,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:00,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506219197] [2022-01-18 03:12:00,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506219197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:00,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:00,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:00,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532549859] [2022-01-18 03:12:00,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:00,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:00,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:00,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:00,889 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 03:12:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:01,778 INFO L93 Difference]: Finished difference Result 1265 states and 3115 transitions. [2022-01-18 03:12:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:12:01,778 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 03:12:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:01,780 INFO L225 Difference]: With dead ends: 1265 [2022-01-18 03:12:01,780 INFO L226 Difference]: Without dead ends: 1130 [2022-01-18 03:12:01,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:12:01,780 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 311 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:01,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2738 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:12:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2022-01-18 03:12:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1063. [2022-01-18 03:12:01,788 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 03:12:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-01-18 03:12:01,789 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-01-18 03:12:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:01,789 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-01-18 03:12:01,790 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 03:12:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-01-18 03:12:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:01,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:01,791 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 03:12:01,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-18 03:12:01,791 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:01,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash -594352692, now seen corresponding path program 118 times [2022-01-18 03:12:01,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448551176] [2022-01-18 03:12:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:01,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:02,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:02,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448551176] [2022-01-18 03:12:02,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448551176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:02,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:02,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:02,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203110774] [2022-01-18 03:12:02,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:02,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:02,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:02,043 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 03:12:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:02,765 INFO L93 Difference]: Finished difference Result 1253 states and 3082 transitions. [2022-01-18 03:12:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:12:02,765 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 03:12:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:02,767 INFO L225 Difference]: With dead ends: 1253 [2022-01-18 03:12:02,767 INFO L226 Difference]: Without dead ends: 1071 [2022-01-18 03:12:02,767 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 03:12:02,767 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 280 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2347 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 03:12:02,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2347 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:12:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-01-18 03:12:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1039. [2022-01-18 03:12:02,775 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 03:12:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2589 transitions. [2022-01-18 03:12:02,783 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2589 transitions. Word has length 79 [2022-01-18 03:12:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:02,783 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2589 transitions. [2022-01-18 03:12:02,783 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 03:12:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2589 transitions. [2022-01-18 03:12:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:02,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:02,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:02,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-18 03:12:02,784 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash -594705146, now seen corresponding path program 119 times [2022-01-18 03:12:02,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:02,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540075976] [2022-01-18 03:12:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:02,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:03,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:03,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540075976] [2022-01-18 03:12:03,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540075976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:03,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:03,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:03,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544874367] [2022-01-18 03:12:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:03,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:03,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:03,054 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 03:12:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:04,322 INFO L93 Difference]: Finished difference Result 1325 states and 3305 transitions. [2022-01-18 03:12:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:12:04,322 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 03:12:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:04,323 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 03:12:04,323 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 03:12:04,324 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 03:12:04,324 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 339 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:04,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2694 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:12:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 03:12:04,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1099. [2022-01-18 03:12:04,332 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 03:12:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-01-18 03:12:04,333 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-01-18 03:12:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:04,333 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-01-18 03:12:04,333 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 03:12:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-01-18 03:12:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:04,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:04,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:04,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-18 03:12:04,335 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1448096312, now seen corresponding path program 120 times [2022-01-18 03:12:04,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:04,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221353117] [2022-01-18 03:12:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:04,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:04,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:04,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221353117] [2022-01-18 03:12:04,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221353117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:04,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:04,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:04,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813330428] [2022-01-18 03:12:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:04,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:04,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:04,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:04,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:04,601 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 03:12:07,205 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 03:12:07,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:07,725 INFO L93 Difference]: Finished difference Result 1360 states and 3387 transitions. [2022-01-18 03:12:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:12:07,726 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 03:12:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:07,728 INFO L225 Difference]: With dead ends: 1360 [2022-01-18 03:12:07,728 INFO L226 Difference]: Without dead ends: 1262 [2022-01-18 03:12:07,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=2601, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:12:07,728 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 313 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:07,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 2688 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1053 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 03:12:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-01-18 03:12:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1127. [2022-01-18 03:12:07,743 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 03:12:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2811 transitions. [2022-01-18 03:12:07,744 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2811 transitions. Word has length 79 [2022-01-18 03:12:07,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:07,744 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2811 transitions. [2022-01-18 03:12:07,744 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 03:12:07,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2811 transitions. [2022-01-18 03:12:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:07,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:07,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:07,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-18 03:12:07,746 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:07,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:07,746 INFO L85 PathProgramCache]: Analyzing trace with hash -733859034, now seen corresponding path program 121 times [2022-01-18 03:12:07,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:07,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951355973] [2022-01-18 03:12:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:07,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:08,013 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 03:12:08,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:08,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951355973] [2022-01-18 03:12:08,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951355973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:08,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:08,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:08,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412314444] [2022-01-18 03:12:08,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:08,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:08,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:08,015 INFO L87 Difference]: Start difference. First operand 1127 states and 2811 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 03:12:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:09,332 INFO L93 Difference]: Finished difference Result 1335 states and 3316 transitions. [2022-01-18 03:12:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:12:09,333 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 03:12:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:09,334 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 03:12:09,334 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 03:12:09,334 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 03:12:09,334 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 348 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:09,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 2479 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:12:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 03:12:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1119. [2022-01-18 03:12:09,343 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 03:12:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2785 transitions. [2022-01-18 03:12:09,344 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2785 transitions. Word has length 79 [2022-01-18 03:12:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:09,344 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2785 transitions. [2022-01-18 03:12:09,344 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 03:12:09,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2785 transitions. [2022-01-18 03:12:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:09,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:09,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:09,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-18 03:12:09,345 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash -408410808, now seen corresponding path program 122 times [2022-01-18 03:12:09,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:09,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266592607] [2022-01-18 03:12:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:09,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:09,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:09,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266592607] [2022-01-18 03:12:09,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266592607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:09,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:09,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:09,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802598523] [2022-01-18 03:12:09,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:09,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:09,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:09,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:09,611 INFO L87 Difference]: Start difference. First operand 1119 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 03:12:12,288 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 03:12:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:12,742 INFO L93 Difference]: Finished difference Result 1341 states and 3325 transitions. [2022-01-18 03:12:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:12:12,743 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 03:12:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:12,744 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 03:12:12,744 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 03:12:12,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=2230, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:12:12,745 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 343 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:12,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2512 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 998 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 03:12:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 03:12:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1115. [2022-01-18 03:12:12,759 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 03:12:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2774 transitions. [2022-01-18 03:12:12,760 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2774 transitions. Word has length 79 [2022-01-18 03:12:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:12,760 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2774 transitions. [2022-01-18 03:12:12,760 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 03:12:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2774 transitions. [2022-01-18 03:12:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:12,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:12,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:12,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-18 03:12:12,762 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash 453171526, now seen corresponding path program 123 times [2022-01-18 03:12:12,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:12,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897063784] [2022-01-18 03:12:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:12,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:13,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:13,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897063784] [2022-01-18 03:12:13,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897063784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:13,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:13,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:13,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860054665] [2022-01-18 03:12:13,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:13,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:13,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:13,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:13,053 INFO L87 Difference]: Start difference. First operand 1115 states and 2774 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 03:12:15,726 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 03:12:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:16,200 INFO L93 Difference]: Finished difference Result 1346 states and 3332 transitions. [2022-01-18 03:12:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:12:16,200 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 03:12:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:16,202 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 03:12:16,202 INFO L226 Difference]: Without dead ends: 1248 [2022-01-18 03:12:16,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=2033, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:12:16,203 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 293 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:16,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 2479 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 966 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 03:12:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-01-18 03:12:16,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1139. [2022-01-18 03:12:16,211 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 03:12:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2832 transitions. [2022-01-18 03:12:16,212 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2832 transitions. Word has length 79 [2022-01-18 03:12:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:16,213 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2832 transitions. [2022-01-18 03:12:16,213 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 03:12:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2832 transitions. [2022-01-18 03:12:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:16,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:16,214 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 03:12:16,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-18 03:12:16,214 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:16,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:16,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1769704418, now seen corresponding path program 124 times [2022-01-18 03:12:16,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:16,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795238923] [2022-01-18 03:12:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:16,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:16,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:16,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795238923] [2022-01-18 03:12:16,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795238923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:16,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:16,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:16,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491372015] [2022-01-18 03:12:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:16,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:16,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:16,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:16,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:16,484 INFO L87 Difference]: Start difference. First operand 1139 states and 2832 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 03:12:17,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:17,709 INFO L93 Difference]: Finished difference Result 1365 states and 3374 transitions. [2022-01-18 03:12:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:12:17,710 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 03:12:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:17,711 INFO L225 Difference]: With dead ends: 1365 [2022-01-18 03:12:17,711 INFO L226 Difference]: Without dead ends: 1178 [2022-01-18 03:12:17,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:12:17,711 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 295 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:17,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2493 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:12:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-01-18 03:12:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1099. [2022-01-18 03:12:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.4863387978142075) internal successors, (2730), 1098 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 03:12:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2730 transitions. [2022-01-18 03:12:17,721 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2730 transitions. Word has length 79 [2022-01-18 03:12:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:17,721 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2730 transitions. [2022-01-18 03:12:17,721 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 03:12:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2730 transitions. [2022-01-18 03:12:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:17,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:17,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:17,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-18 03:12:17,722 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2044996922, now seen corresponding path program 125 times [2022-01-18 03:12:17,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:17,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235997628] [2022-01-18 03:12:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:17,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:18,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:18,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235997628] [2022-01-18 03:12:18,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235997628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:18,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:18,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:18,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730746325] [2022-01-18 03:12:18,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:18,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:18,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:18,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:18,015 INFO L87 Difference]: Start difference. First operand 1099 states and 2730 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 03:12:19,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:19,033 INFO L93 Difference]: Finished difference Result 1332 states and 3298 transitions. [2022-01-18 03:12:19,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:12:19,034 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 03:12:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:19,035 INFO L225 Difference]: With dead ends: 1332 [2022-01-18 03:12:19,035 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 03:12:19,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:12:19,036 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 286 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:19,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2404 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:12:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 03:12:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1119. [2022-01-18 03:12:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.487477638640429) internal successors, (2781), 1118 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 03:12:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2781 transitions. [2022-01-18 03:12:19,045 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2781 transitions. Word has length 79 [2022-01-18 03:12:19,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:19,046 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2781 transitions. [2022-01-18 03:12:19,046 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 03:12:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2781 transitions. [2022-01-18 03:12:19,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:19,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:19,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:19,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-18 03:12:19,047 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash -771801052, now seen corresponding path program 126 times [2022-01-18 03:12:19,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:19,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30984581] [2022-01-18 03:12:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:19,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:19,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:19,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30984581] [2022-01-18 03:12:19,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30984581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:19,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:19,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:19,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014596394] [2022-01-18 03:12:19,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:19,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:19,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:19,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:19,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:19,353 INFO L87 Difference]: Start difference. First operand 1119 states and 2781 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 03:12:20,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:20,479 INFO L93 Difference]: Finished difference Result 1342 states and 3317 transitions. [2022-01-18 03:12:20,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:12:20,479 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 03:12:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:20,480 INFO L225 Difference]: With dead ends: 1342 [2022-01-18 03:12:20,480 INFO L226 Difference]: Without dead ends: 1216 [2022-01-18 03:12:20,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=1942, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:12:20,481 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 310 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:20,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 2321 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-01-18 03:12:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1115. [2022-01-18 03:12:20,489 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 03:12:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2778 transitions. [2022-01-18 03:12:20,490 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2778 transitions. Word has length 79 [2022-01-18 03:12:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:20,490 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2778 transitions. [2022-01-18 03:12:20,490 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 03:12:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2778 transitions. [2022-01-18 03:12:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:20,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:20,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:20,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-18 03:12:20,492 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:20,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:20,492 INFO L85 PathProgramCache]: Analyzing trace with hash -253094584, now seen corresponding path program 127 times [2022-01-18 03:12:20,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:20,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15314536] [2022-01-18 03:12:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:20,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:20,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:20,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15314536] [2022-01-18 03:12:20,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15314536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:20,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:20,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:20,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673170556] [2022-01-18 03:12:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:20,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:20,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:20,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:20,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:20,788 INFO L87 Difference]: Start difference. First operand 1115 states and 2778 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 03:12:21,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:21,724 INFO L93 Difference]: Finished difference Result 1297 states and 3212 transitions. [2022-01-18 03:12:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:12:21,724 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 03:12:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:21,725 INFO L225 Difference]: With dead ends: 1297 [2022-01-18 03:12:21,725 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 03:12:21,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:12:21,726 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 284 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:21,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2162 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:12:21,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 03:12:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1115. [2022-01-18 03:12:21,734 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 03:12:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2774 transitions. [2022-01-18 03:12:21,735 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2774 transitions. Word has length 79 [2022-01-18 03:12:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:21,735 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2774 transitions. [2022-01-18 03:12:21,735 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 03:12:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2774 transitions. [2022-01-18 03:12:21,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:21,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:21,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:21,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-18 03:12:21,737 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash 94248264, now seen corresponding path program 128 times [2022-01-18 03:12:21,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:21,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673038926] [2022-01-18 03:12:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:21,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:22,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:22,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673038926] [2022-01-18 03:12:22,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673038926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:22,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:22,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:22,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014774214] [2022-01-18 03:12:22,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:22,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:22,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:22,025 INFO L87 Difference]: Start difference. First operand 1115 states and 2774 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 03:12:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:22,968 INFO L93 Difference]: Finished difference Result 1272 states and 3145 transitions. [2022-01-18 03:12:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:12:22,969 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 03:12:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:22,970 INFO L225 Difference]: With dead ends: 1272 [2022-01-18 03:12:22,970 INFO L226 Difference]: Without dead ends: 1163 [2022-01-18 03:12:22,971 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 03:12:22,971 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 283 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:22,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2289 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:12:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-01-18 03:12:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1107. [2022-01-18 03:12:22,979 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 03:12:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-01-18 03:12:22,980 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-01-18 03:12:22,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:22,980 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-01-18 03:12:22,980 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 03:12:22,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-01-18 03:12:22,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:22,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:22,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:22,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-18 03:12:22,982 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:22,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1881471970, now seen corresponding path program 129 times [2022-01-18 03:12:22,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:22,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173859743] [2022-01-18 03:12:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:22,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:23,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:23,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173859743] [2022-01-18 03:12:23,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173859743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:23,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:23,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:23,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391509180] [2022-01-18 03:12:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:23,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:23,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:23,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:23,254 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 03:12:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:24,212 INFO L93 Difference]: Finished difference Result 1270 states and 3135 transitions. [2022-01-18 03:12:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:12:24,212 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 03:12:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:24,213 INFO L225 Difference]: With dead ends: 1270 [2022-01-18 03:12:24,213 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 03:12:24,214 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 03:12:24,214 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 297 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:24,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2510 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:12:24,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 03:12:24,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1075. [2022-01-18 03:12:24,222 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 03:12:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:12:24,223 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:12:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:24,223 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:12:24,223 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 03:12:24,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:12:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:24,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:24,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:24,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-18 03:12:24,224 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1398822948, now seen corresponding path program 130 times [2022-01-18 03:12:24,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:24,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554603181] [2022-01-18 03:12:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:24,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:24,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:24,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554603181] [2022-01-18 03:12:24,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554603181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:24,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:24,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:24,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84413261] [2022-01-18 03:12:24,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:24,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:24,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:24,526 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 03:12:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:25,827 INFO L93 Difference]: Finished difference Result 1345 states and 3331 transitions. [2022-01-18 03:12:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:12:25,827 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 03:12:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:25,828 INFO L225 Difference]: With dead ends: 1345 [2022-01-18 03:12:25,829 INFO L226 Difference]: Without dead ends: 1247 [2022-01-18 03:12:25,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:12:25,829 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 286 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:25,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2942 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:12:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-01-18 03:12:25,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1103. [2022-01-18 03:12:25,837 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 03:12:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-01-18 03:12:25,838 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-01-18 03:12:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:25,839 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-01-18 03:12:25,839 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 03:12:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-01-18 03:12:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:25,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:25,840 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 03:12:25,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-18 03:12:25,840 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1579611456, now seen corresponding path program 131 times [2022-01-18 03:12:25,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:25,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934645435] [2022-01-18 03:12:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:25,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:26,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:26,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934645435] [2022-01-18 03:12:26,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934645435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:26,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:26,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:26,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232205299] [2022-01-18 03:12:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:26,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:26,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:26,155 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 03:12:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:27,315 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-01-18 03:12:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:12:27,316 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 03:12:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:27,317 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 03:12:27,317 INFO L226 Difference]: Without dead ends: 1166 [2022-01-18 03:12:27,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:12:27,317 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 311 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:27,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2682 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-18 03:12:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1079. [2022-01-18 03:12:27,325 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 03:12:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-01-18 03:12:27,326 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-01-18 03:12:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:27,326 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-01-18 03:12:27,327 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 03:12:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-01-18 03:12:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:27,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:27,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:27,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-18 03:12:27,328 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1584840810, now seen corresponding path program 132 times [2022-01-18 03:12:27,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:27,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023318596] [2022-01-18 03:12:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:27,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:27,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:27,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023318596] [2022-01-18 03:12:27,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023318596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:27,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:27,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:27,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533887220] [2022-01-18 03:12:27,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:27,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:27,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:27,618 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 03:12:28,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:28,617 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-01-18 03:12:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:12:28,617 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 03:12:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:28,619 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 03:12:28,619 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 03:12:28,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:12:28,619 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 281 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:28,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2578 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:12:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 03:12:28,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-01-18 03:12:28,627 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 03:12:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 03:12:28,628 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 03:12:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:28,628 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 03:12:28,628 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 03:12:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 03:12:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:28,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:28,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:28,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-18 03:12:28,630 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:28,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2026530828, now seen corresponding path program 133 times [2022-01-18 03:12:28,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:28,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774075265] [2022-01-18 03:12:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:28,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:28,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:28,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774075265] [2022-01-18 03:12:28,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774075265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:28,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:28,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:28,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010549419] [2022-01-18 03:12:28,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:28,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:28,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:28,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:28,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:28,921 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 03:12:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:30,080 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-01-18 03:12:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:12:30,080 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 03:12:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:30,082 INFO L225 Difference]: With dead ends: 1327 [2022-01-18 03:12:30,082 INFO L226 Difference]: Without dead ends: 1229 [2022-01-18 03:12:30,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:12:30,082 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 261 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:30,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2777 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:12:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-01-18 03:12:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1111. [2022-01-18 03:12:30,090 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 03:12:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-01-18 03:12:30,092 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-01-18 03:12:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:30,092 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-01-18 03:12:30,092 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 03:12:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-01-18 03:12:30,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:30,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:30,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:30,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-18 03:12:30,093 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:30,093 INFO L85 PathProgramCache]: Analyzing trace with hash -951903576, now seen corresponding path program 134 times [2022-01-18 03:12:30,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:30,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584352299] [2022-01-18 03:12:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:30,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:30,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:30,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584352299] [2022-01-18 03:12:30,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584352299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:30,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:30,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:12:30,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400094240] [2022-01-18 03:12:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:30,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:12:30,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:12:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:12:30,381 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 03:12:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:31,425 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-01-18 03:12:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 03:12:31,425 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 03:12:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:31,427 INFO L225 Difference]: With dead ends: 1295 [2022-01-18 03:12:31,427 INFO L226 Difference]: Without dead ends: 1160 [2022-01-18 03:12:31,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:12:31,427 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 300 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:31,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2356 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-01-18 03:12:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1087. [2022-01-18 03:12:31,435 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 03:12:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:12:31,436 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:12:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:31,436 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:12:31,437 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 03:12:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:12:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:31,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:31,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:31,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-18 03:12:31,438 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1975058156, now seen corresponding path program 135 times [2022-01-18 03:12:31,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:31,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080148225] [2022-01-18 03:12:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:31,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:31,727 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 03:12:31,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:31,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080148225] [2022-01-18 03:12:31,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080148225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:31,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:31,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 03:12:31,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117260050] [2022-01-18 03:12:31,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:31,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 03:12:31,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:31,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 03:12:31,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-01-18 03:12:31,729 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 03:12:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:32,579 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-01-18 03:12:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 03:12:32,580 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 03:12:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:32,581 INFO L225 Difference]: With dead ends: 1271 [2022-01-18 03:12:32,581 INFO L226 Difference]: Without dead ends: 1051 [2022-01-18 03:12:32,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 03:12:32,581 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 266 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:32,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2269 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:12:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-01-18 03:12:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1023. [2022-01-18 03:12:32,589 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 03:12:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2545 transitions. [2022-01-18 03:12:32,590 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2545 transitions. Word has length 79 [2022-01-18 03:12:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:32,590 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2545 transitions. [2022-01-18 03:12:32,590 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 03:12:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2545 transitions. [2022-01-18 03:12:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:32,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:32,591 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 03:12:32,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-18 03:12:32,591 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:32,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1998707450, now seen corresponding path program 136 times [2022-01-18 03:12:32,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:32,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150657267] [2022-01-18 03:12:32,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:32,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:32,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:32,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150657267] [2022-01-18 03:12:32,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150657267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:32,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:32,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:12:32,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86954443] [2022-01-18 03:12:32,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:32,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:12:32,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:32,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:12:32,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:12:32,920 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 03:12:35,968 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 03:12:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:36,513 INFO L93 Difference]: Finished difference Result 1353 states and 3382 transitions. [2022-01-18 03:12:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:12:36,513 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 03:12:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:36,515 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 03:12:36,515 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 03:12:36,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:12:36,515 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 370 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:36,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 2649 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1100 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 03:12:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 03:12:36,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1087. [2022-01-18 03:12:36,524 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 03:12:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-01-18 03:12:36,525 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-01-18 03:12:36,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:36,525 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-01-18 03:12:36,525 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 03:12:36,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-01-18 03:12:36,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:36,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:36,526 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 03:12:36,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-18 03:12:36,526 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:36,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1442868680, now seen corresponding path program 137 times [2022-01-18 03:12:36,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:36,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556223951] [2022-01-18 03:12:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:36,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:36,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:36,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556223951] [2022-01-18 03:12:36,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556223951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:36,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:36,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:12:36,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023946635] [2022-01-18 03:12:36,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:36,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:12:36,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:12:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:12:36,846 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 03:12:39,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:12:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:39,566 INFO L93 Difference]: Finished difference Result 1352 states and 3373 transitions. [2022-01-18 03:12:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:12:39,566 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 03:12:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:39,567 INFO L225 Difference]: With dead ends: 1352 [2022-01-18 03:12:39,567 INFO L226 Difference]: Without dead ends: 1254 [2022-01-18 03:12:39,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=2923, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:12:39,568 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 342 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:39,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 3019 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 03:12:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-01-18 03:12:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1091. [2022-01-18 03:12:39,576 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 03:12:39,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-01-18 03:12:39,577 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-01-18 03:12:39,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:39,577 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-01-18 03:12:39,577 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 03:12:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-01-18 03:12:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:39,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:39,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:39,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-18 03:12:39,579 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2137861338, now seen corresponding path program 138 times [2022-01-18 03:12:39,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969558404] [2022-01-18 03:12:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:39,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:39,892 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 03:12:39,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:39,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969558404] [2022-01-18 03:12:39,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969558404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:39,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:39,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:12:39,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989944112] [2022-01-18 03:12:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:39,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:12:39,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:12:39,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:12:39,893 INFO L87 Difference]: Start difference. First operand 1091 states and 2720 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 03:12:41,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:41,311 INFO L93 Difference]: Finished difference Result 1335 states and 3324 transitions. [2022-01-18 03:12:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:12:41,311 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 03:12:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:41,313 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 03:12:41,313 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 03:12:41,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=2923, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:12:41,313 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 345 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:41,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 2808 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:12:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 03:12:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1079. [2022-01-18 03:12:41,322 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 03:12:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-01-18 03:12:41,323 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-01-18 03:12:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:41,323 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-01-18 03:12:41,323 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 03:12:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-01-18 03:12:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:41,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:41,324 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 03:12:41,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-18 03:12:41,324 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:41,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:41,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1812413112, now seen corresponding path program 139 times [2022-01-18 03:12:41,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:41,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131151121] [2022-01-18 03:12:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:41,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:41,645 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 03:12:41,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:41,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131151121] [2022-01-18 03:12:41,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131151121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:41,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:41,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:12:41,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364207537] [2022-01-18 03:12:41,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:41,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:12:41,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:41,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:12:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:12:41,646 INFO L87 Difference]: Start difference. First operand 1079 states and 2687 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 03:12:44,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:44,164 INFO L93 Difference]: Finished difference Result 1341 states and 3333 transitions. [2022-01-18 03:12:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:12:44,164 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 03:12:44,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:44,165 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 03:12:44,165 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 03:12:44,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=2727, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:12:44,166 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 323 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:44,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2808 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 03:12:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 03:12:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1075. [2022-01-18 03:12:44,174 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 03:12:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:12:44,175 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:12:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:44,175 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:12:44,175 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 03:12:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:12:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:44,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:44,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:44,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-18 03:12:44,176 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:44,176 INFO L85 PathProgramCache]: Analyzing trace with hash -950830778, now seen corresponding path program 140 times [2022-01-18 03:12:44,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:44,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30612257] [2022-01-18 03:12:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:44,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:44,477 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 03:12:44,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30612257] [2022-01-18 03:12:44,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30612257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:44,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:44,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:44,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998981709] [2022-01-18 03:12:44,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:44,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:44,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:44,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:44,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:44,478 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 03:12:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:45,807 INFO L93 Difference]: Finished difference Result 1330 states and 3300 transitions. [2022-01-18 03:12:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:12:45,808 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 03:12:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:45,809 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 03:12:45,809 INFO L226 Difference]: Without dead ends: 1232 [2022-01-18 03:12:45,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=2412, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:12:45,810 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 276 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:45,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 2803 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:12:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-01-18 03:12:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1099. [2022-01-18 03:12:45,818 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 03:12:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 03:12:45,819 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 03:12:45,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:45,820 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 03:12:45,820 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 03:12:45,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 03:12:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:45,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:45,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:45,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-18 03:12:45,821 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash 365702114, now seen corresponding path program 141 times [2022-01-18 03:12:45,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:45,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302276017] [2022-01-18 03:12:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:45,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:46,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:46,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302276017] [2022-01-18 03:12:46,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302276017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:46,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:46,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:46,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743648132] [2022-01-18 03:12:46,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:46,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:46,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:46,112 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 03:12:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:47,353 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-01-18 03:12:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:12:47,353 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 03:12:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:47,354 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 03:12:47,354 INFO L226 Difference]: Without dead ends: 1139 [2022-01-18 03:12:47,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:12:47,355 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 297 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:47,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2518 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:12:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-18 03:12:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1051. [2022-01-18 03:12:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4895238095238095) internal successors, (2614), 1050 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 03:12:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2614 transitions. [2022-01-18 03:12:47,364 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2614 transitions. Word has length 79 [2022-01-18 03:12:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:47,364 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2614 transitions. [2022-01-18 03:12:47,364 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 03:12:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2614 transitions. [2022-01-18 03:12:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:47,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:47,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:47,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-18 03:12:47,365 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1657096888, now seen corresponding path program 142 times [2022-01-18 03:12:47,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:47,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929761820] [2022-01-18 03:12:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:47,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:47,672 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 03:12:47,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929761820] [2022-01-18 03:12:47,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929761820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:47,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:47,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:47,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285142409] [2022-01-18 03:12:47,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:47,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:47,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:47,673 INFO L87 Difference]: Start difference. First operand 1051 states and 2614 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 03:12:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:48,814 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-01-18 03:12:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:12:48,814 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 03:12:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:48,816 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 03:12:48,816 INFO L226 Difference]: Without dead ends: 1171 [2022-01-18 03:12:48,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=2138, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:12:48,816 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 307 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:48,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2369 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-01-18 03:12:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1075. [2022-01-18 03:12:48,824 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 03:12:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:12:48,825 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:12:48,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:48,825 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:12:48,825 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 03:12:48,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:12:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:48,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:48,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:48,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-18 03:12:48,827 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2023991318, now seen corresponding path program 143 times [2022-01-18 03:12:48,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:48,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837529027] [2022-01-18 03:12:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:48,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:49,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:49,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837529027] [2022-01-18 03:12:49,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837529027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:49,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:49,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:49,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597617793] [2022-01-18 03:12:49,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:49,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:49,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:49,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:49,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:49,132 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 03:12:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:50,318 INFO L93 Difference]: Finished difference Result 1296 states and 3215 transitions. [2022-01-18 03:12:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:12:50,319 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 03:12:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:50,320 INFO L225 Difference]: With dead ends: 1296 [2022-01-18 03:12:50,320 INFO L226 Difference]: Without dead ends: 1198 [2022-01-18 03:12:50,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:12:50,320 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 274 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:50,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2559 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-01-18 03:12:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1079. [2022-01-18 03:12:50,329 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 03:12:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-01-18 03:12:50,330 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-01-18 03:12:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:50,330 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-01-18 03:12:50,330 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 03:12:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-01-18 03:12:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:50,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:50,331 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 03:12:50,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-18 03:12:50,331 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1309754040, now seen corresponding path program 144 times [2022-01-18 03:12:50,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037257701] [2022-01-18 03:12:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:50,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:50,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:50,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037257701] [2022-01-18 03:12:50,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037257701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:50,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:50,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:50,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620904644] [2022-01-18 03:12:50,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:50,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:50,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:50,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:50,636 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 03:12:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:51,791 INFO L93 Difference]: Finished difference Result 1264 states and 3131 transitions. [2022-01-18 03:12:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:12:51,791 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 03:12:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:51,793 INFO L225 Difference]: With dead ends: 1264 [2022-01-18 03:12:51,793 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 03:12:51,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:12:51,793 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 306 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:51,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2624 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 03:12:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1071. [2022-01-18 03:12:51,802 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 03:12:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-01-18 03:12:51,803 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-01-18 03:12:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:51,803 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-01-18 03:12:51,803 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 03:12:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-01-18 03:12:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:51,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:51,804 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 03:12:51,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-18 03:12:51,804 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:51,804 INFO L85 PathProgramCache]: Analyzing trace with hash -839063226, now seen corresponding path program 145 times [2022-01-18 03:12:51,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:51,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515283932] [2022-01-18 03:12:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:51,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:52,112 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 03:12:52,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:52,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515283932] [2022-01-18 03:12:52,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515283932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:52,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:52,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:52,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008885621] [2022-01-18 03:12:52,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:52,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:52,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:52,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:52,113 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 03:12:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:53,432 INFO L93 Difference]: Finished difference Result 1318 states and 3267 transitions. [2022-01-18 03:12:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:12:53,433 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 03:12:53,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:53,434 INFO L225 Difference]: With dead ends: 1318 [2022-01-18 03:12:53,434 INFO L226 Difference]: Without dead ends: 1220 [2022-01-18 03:12:53,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:12:53,435 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 321 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:53,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2642 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:12:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-01-18 03:12:53,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1095. [2022-01-18 03:12:53,443 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 03:12:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-01-18 03:12:53,444 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-01-18 03:12:53,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:53,444 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-01-18 03:12:53,444 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 03:12:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-01-18 03:12:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:53,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:53,445 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 03:12:53,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-18 03:12:53,445 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash 477469666, now seen corresponding path program 146 times [2022-01-18 03:12:53,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:53,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408719570] [2022-01-18 03:12:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:53,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:53,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:53,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408719570] [2022-01-18 03:12:53,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408719570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:53,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:53,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:53,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164793877] [2022-01-18 03:12:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:53,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:53,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:53,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:53,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:53,732 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 03:12:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:54,864 INFO L93 Difference]: Finished difference Result 1286 states and 3179 transitions. [2022-01-18 03:12:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:12:54,865 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 03:12:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:54,866 INFO L225 Difference]: With dead ends: 1286 [2022-01-18 03:12:54,866 INFO L226 Difference]: Without dead ends: 1143 [2022-01-18 03:12:54,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:12:54,867 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 320 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:54,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2611 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-01-18 03:12:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1063. [2022-01-18 03:12:54,875 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 03:12:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 03:12:54,876 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 03:12:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:54,876 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 03:12:54,876 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 03:12:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 03:12:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:54,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:54,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:54,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-18 03:12:54,877 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash -5179356, now seen corresponding path program 147 times [2022-01-18 03:12:54,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:54,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846911757] [2022-01-18 03:12:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:54,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:55,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:55,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846911757] [2022-01-18 03:12:55,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846911757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:55,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:55,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:12:55,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802286411] [2022-01-18 03:12:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:55,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:12:55,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:12:55,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:12:55,201 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 03:12:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:56,636 INFO L93 Difference]: Finished difference Result 1361 states and 3375 transitions. [2022-01-18 03:12:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:12:56,637 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 03:12:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:56,638 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 03:12:56,638 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 03:12:56,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:12:56,639 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 311 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:56,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 3048 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:12:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 03:12:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1091. [2022-01-18 03:12:56,647 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 03:12:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-01-18 03:12:56,648 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-01-18 03:12:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:56,648 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-01-18 03:12:56,648 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 03:12:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-01-18 03:12:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:56,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:56,649 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 03:12:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-18 03:12:56,650 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1311353536, now seen corresponding path program 148 times [2022-01-18 03:12:56,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:56,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819888766] [2022-01-18 03:12:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:56,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:56,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:56,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819888766] [2022-01-18 03:12:56,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819888766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:56,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:56,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:12:56,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004543845] [2022-01-18 03:12:56,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:56,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:12:56,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:12:56,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:12:56,970 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 03:12:58,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:58,317 INFO L93 Difference]: Finished difference Result 1317 states and 3258 transitions. [2022-01-18 03:12:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:12:58,317 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 03:12:58,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:58,318 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 03:12:58,318 INFO L226 Difference]: Without dead ends: 1182 [2022-01-18 03:12:58,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:12:58,319 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 335 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:58,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 2772 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-18 03:12:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1067. [2022-01-18 03:12:58,327 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 03:12:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-01-18 03:12:58,328 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-01-18 03:12:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:58,328 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-01-18 03:12:58,328 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 03:12:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-01-18 03:12:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:58,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:58,329 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 03:12:58,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-18 03:12:58,330 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:58,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash 180838506, now seen corresponding path program 149 times [2022-01-18 03:12:58,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:58,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410872348] [2022-01-18 03:12:58,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:58,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:12:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:12:58,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:12:58,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410872348] [2022-01-18 03:12:58,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410872348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:12:58,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:12:58,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:12:58,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977338929] [2022-01-18 03:12:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:12:58,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:12:58,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:12:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:12:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:12:58,643 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 03:12:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:12:59,838 INFO L93 Difference]: Finished difference Result 1305 states and 3225 transitions. [2022-01-18 03:12:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:12:59,838 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 03:12:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:12:59,840 INFO L225 Difference]: With dead ends: 1305 [2022-01-18 03:12:59,840 INFO L226 Difference]: Without dead ends: 1131 [2022-01-18 03:12:59,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:12:59,840 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 341 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:12:59,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2830 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:12:59,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-01-18 03:12:59,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1051. [2022-01-18 03:12:59,848 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 03:12:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 03:12:59,849 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 03:12:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:12:59,849 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 03:12:59,849 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 03:12:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 03:12:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:12:59,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:12:59,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:12:59,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-18 03:12:59,850 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:12:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:12:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash 622528524, now seen corresponding path program 150 times [2022-01-18 03:12:59,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:12:59,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084524311] [2022-01-18 03:12:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:12:59,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:12:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:00,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:00,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084524311] [2022-01-18 03:13:00,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084524311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:00,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:00,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:00,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349813200] [2022-01-18 03:13:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:00,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:00,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:00,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:00,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:00,155 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 03:13:03,123 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 03:13:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:03,531 INFO L93 Difference]: Finished difference Result 1367 states and 3379 transitions. [2022-01-18 03:13:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:13:03,532 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 03:13:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:03,533 INFO L225 Difference]: With dead ends: 1367 [2022-01-18 03:13:03,533 INFO L226 Difference]: Without dead ends: 1269 [2022-01-18 03:13:03,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=245, Invalid=2617, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:13:03,534 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 311 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:03,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2738 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1087 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 03:13:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-01-18 03:13:03,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1087. [2022-01-18 03:13:03,542 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 03:13:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:13:03,543 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:13:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:13:03,544 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 03:13:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:13:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:03,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:03,545 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 03:13:03,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-18 03:13:03,545 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1939061416, now seen corresponding path program 151 times [2022-01-18 03:13:03,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:03,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677935018] [2022-01-18 03:13:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:03,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:03,833 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 03:13:03,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:03,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677935018] [2022-01-18 03:13:03,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677935018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:03,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:03,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:03,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48731630] [2022-01-18 03:13:03,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:03,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:03,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:03,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:03,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:03,834 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 03:13:06,758 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 03:13:07,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:07,301 INFO L93 Difference]: Finished difference Result 1335 states and 3291 transitions. [2022-01-18 03:13:07,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:13:07,301 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 03:13:07,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:07,303 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 03:13:07,303 INFO L226 Difference]: Without dead ends: 1172 [2022-01-18 03:13:07,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=2421, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:13:07,303 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 337 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:07,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2720 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1054 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 03:13:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-01-18 03:13:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2022-01-18 03:13:07,311 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 03:13:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 03:13:07,312 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 03:13:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:07,313 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 03:13:07,313 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 03:13:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 03:13:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:07,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:07,314 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 03:13:07,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-18 03:13:07,314 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash 571055852, now seen corresponding path program 152 times [2022-01-18 03:13:07,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:07,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256001197] [2022-01-18 03:13:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:07,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:07,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:07,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256001197] [2022-01-18 03:13:07,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256001197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:07,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:07,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:07,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257267167] [2022-01-18 03:13:07,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:07,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:07,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:07,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:07,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:07,588 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 03:13:08,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:08,574 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-01-18 03:13:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:13:08,574 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 03:13:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:08,576 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 03:13:08,576 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 03:13:08,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:13:08,576 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 300 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:08,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2330 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:13:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 03:13:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1027. [2022-01-18 03:13:08,584 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 03:13:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2552 transitions. [2022-01-18 03:13:08,585 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2552 transitions. Word has length 79 [2022-01-18 03:13:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:08,585 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2552 transitions. [2022-01-18 03:13:08,585 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 03:13:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2552 transitions. [2022-01-18 03:13:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:08,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:08,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:08,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-18 03:13:08,586 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:08,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1880465684, now seen corresponding path program 153 times [2022-01-18 03:13:08,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:08,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367833980] [2022-01-18 03:13:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:08,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:08,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:08,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367833980] [2022-01-18 03:13:08,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367833980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:08,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:08,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:08,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064592170] [2022-01-18 03:13:08,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:08,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:08,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:08,884 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 03:13:09,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:09,862 INFO L93 Difference]: Finished difference Result 1285 states and 3191 transitions. [2022-01-18 03:13:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:13:09,862 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 03:13:09,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:09,864 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 03:13:09,864 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 03:13:09,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:13:09,864 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 239 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:09,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 2418 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:13:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 03:13:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1083. [2022-01-18 03:13:09,872 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 03:13:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-01-18 03:13:09,874 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-01-18 03:13:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:09,874 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-01-18 03:13:09,874 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 03:13:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-01-18 03:13:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:09,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:09,875 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 03:13:09,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-18 03:13:09,875 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1561110446, now seen corresponding path program 154 times [2022-01-18 03:13:09,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:09,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346888619] [2022-01-18 03:13:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:09,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:10,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:10,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346888619] [2022-01-18 03:13:10,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346888619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:10,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:10,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:10,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889904450] [2022-01-18 03:13:10,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:10,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:10,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:10,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:10,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:10,165 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 03:13:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:11,181 INFO L93 Difference]: Finished difference Result 1280 states and 3171 transitions. [2022-01-18 03:13:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:13:11,181 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 03:13:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:11,183 INFO L225 Difference]: With dead ends: 1280 [2022-01-18 03:13:11,183 INFO L226 Difference]: Without dead ends: 1182 [2022-01-18 03:13:11,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:13:11,183 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 246 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:11,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 2488 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:13:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-18 03:13:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1087. [2022-01-18 03:13:11,191 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 03:13:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-01-18 03:13:11,193 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-01-18 03:13:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:11,193 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-01-18 03:13:11,193 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 03:13:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-01-18 03:13:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:11,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:11,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:11,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-18 03:13:11,194 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2019619572, now seen corresponding path program 155 times [2022-01-18 03:13:11,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:11,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759144089] [2022-01-18 03:13:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:11,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:11,533 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 03:13:11,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759144089] [2022-01-18 03:13:11,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759144089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:11,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:11,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:11,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029884677] [2022-01-18 03:13:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:11,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:11,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:11,534 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 03:13:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:12,506 INFO L93 Difference]: Finished difference Result 1248 states and 3087 transitions. [2022-01-18 03:13:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:13:12,506 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 03:13:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:12,507 INFO L225 Difference]: With dead ends: 1248 [2022-01-18 03:13:12,507 INFO L226 Difference]: Without dead ends: 1135 [2022-01-18 03:13:12,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:13:12,508 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 297 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2431 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 03:13:12,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2431 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:13:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-01-18 03:13:12,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1075. [2022-01-18 03:13:12,515 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 03:13:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:13:12,516 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:13:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:12,517 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:13:12,517 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 03:13:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:13:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:12,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:12,518 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 03:13:12,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-18 03:13:12,518 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:12,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:12,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1460660980, now seen corresponding path program 156 times [2022-01-18 03:13:12,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:12,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579805668] [2022-01-18 03:13:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:12,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:12,812 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 03:13:12,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:12,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579805668] [2022-01-18 03:13:12,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579805668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:12,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:12,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:12,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849836025] [2022-01-18 03:13:12,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:12,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:12,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:12,813 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 03:13:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:13,901 INFO L93 Difference]: Finished difference Result 1298 states and 3212 transitions. [2022-01-18 03:13:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:13:13,901 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 03:13:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:13,903 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 03:13:13,903 INFO L226 Difference]: Without dead ends: 1200 [2022-01-18 03:13:13,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:13:13,903 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 252 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:13,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 2543 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:13:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-01-18 03:13:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1099. [2022-01-18 03:13:13,911 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 03:13:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 03:13:13,913 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 03:13:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:13,913 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 03:13:13,913 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 03:13:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 03:13:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:13,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:13,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:13,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-18 03:13:13,914 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:13,914 INFO L85 PathProgramCache]: Analyzing trace with hash -144128088, now seen corresponding path program 157 times [2022-01-18 03:13:13,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:13,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320006634] [2022-01-18 03:13:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:13,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:14,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:14,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320006634] [2022-01-18 03:13:14,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320006634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:14,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:14,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:14,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187175416] [2022-01-18 03:13:14,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:14,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:14,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:14,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:14,185 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 03:13:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:15,156 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-01-18 03:13:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:13:15,156 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 03:13:15,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:15,158 INFO L225 Difference]: With dead ends: 1266 [2022-01-18 03:13:15,158 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 03:13:15,158 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 03:13:15,158 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 251 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:15,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2512 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:13:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 03:13:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1059. [2022-01-18 03:13:15,166 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 03:13:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 03:13:15,167 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 03:13:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:15,167 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 03:13:15,167 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 03:13:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 03:13:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:15,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:15,168 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 03:13:15,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-18 03:13:15,168 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash 709963020, now seen corresponding path program 158 times [2022-01-18 03:13:15,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:15,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248097877] [2022-01-18 03:13:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:15,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:15,486 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 03:13:15,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:15,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248097877] [2022-01-18 03:13:15,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248097877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:15,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:15,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:15,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687183428] [2022-01-18 03:13:15,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:15,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:15,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:15,488 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 03:13:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:16,733 INFO L93 Difference]: Finished difference Result 1333 states and 3298 transitions. [2022-01-18 03:13:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:13:16,733 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 03:13:16,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:16,735 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 03:13:16,735 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 03:13:16,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:13:16,735 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 298 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:16,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2832 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:13:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 03:13:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1087. [2022-01-18 03:13:16,744 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 03:13:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:13:16,745 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:13:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:16,745 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:13:16,745 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 03:13:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:13:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:16,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:16,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:16,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-18 03:13:16,747 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:16,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2026495912, now seen corresponding path program 159 times [2022-01-18 03:13:16,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:16,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258281423] [2022-01-18 03:13:16,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:16,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:17,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:17,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258281423] [2022-01-18 03:13:17,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258281423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:17,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:17,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:17,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896997972] [2022-01-18 03:13:17,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:17,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:17,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:17,063 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 03:13:18,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:18,281 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-01-18 03:13:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:13:18,281 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 03:13:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:18,282 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 03:13:18,283 INFO L226 Difference]: Without dead ends: 1154 [2022-01-18 03:13:18,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:13:18,283 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 281 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:18,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2940 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:13:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-01-18 03:13:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1063. [2022-01-18 03:13:18,291 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 03:13:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-01-18 03:13:18,292 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-01-18 03:13:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:18,292 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-01-18 03:13:18,292 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 03:13:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-01-18 03:13:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:18,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:18,293 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 03:13:18,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-18 03:13:18,293 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:18,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash 895980882, now seen corresponding path program 160 times [2022-01-18 03:13:18,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:18,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782080222] [2022-01-18 03:13:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:18,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:18,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:18,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782080222] [2022-01-18 03:13:18,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782080222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:18,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:18,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:18,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329030793] [2022-01-18 03:13:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:18,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:18,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:18,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:18,588 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 03:13:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:19,559 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-01-18 03:13:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:13:19,559 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 03:13:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:19,561 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 03:13:19,561 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 03:13:19,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:13:19,561 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 305 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:19,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 2603 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:13:19,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 03:13:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-01-18 03:13:19,569 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 03:13:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 03:13:19,570 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 03:13:19,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:19,570 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 03:13:19,570 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 03:13:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 03:13:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:19,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:19,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:19,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-18 03:13:19,572 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:19,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash 774666158, now seen corresponding path program 161 times [2022-01-18 03:13:19,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:19,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747353382] [2022-01-18 03:13:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:19,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:19,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:19,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747353382] [2022-01-18 03:13:19,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747353382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:19,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:19,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:19,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318043016] [2022-01-18 03:13:19,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:19,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:19,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:19,891 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 03:13:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:21,671 INFO L93 Difference]: Finished difference Result 1331 states and 3284 transitions. [2022-01-18 03:13:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:13:21,671 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 03:13:21,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:21,673 INFO L225 Difference]: With dead ends: 1331 [2022-01-18 03:13:21,673 INFO L226 Difference]: Without dead ends: 1233 [2022-01-18 03:13:21,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:13:21,673 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 288 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:21,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 2733 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:13:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-01-18 03:13:21,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1099. [2022-01-18 03:13:21,683 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 03:13:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 03:13:21,684 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 03:13:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:21,684 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 03:13:21,684 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 03:13:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 03:13:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:21,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:21,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:21,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-18 03:13:21,686 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2091199050, now seen corresponding path program 162 times [2022-01-18 03:13:21,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:21,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199319260] [2022-01-18 03:13:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:21,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:22,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:22,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199319260] [2022-01-18 03:13:22,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199319260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:22,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:22,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:22,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24344787] [2022-01-18 03:13:22,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:22,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:22,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:22,011 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 03:13:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:23,219 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-01-18 03:13:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:13:23,219 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 03:13:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:23,221 INFO L225 Difference]: With dead ends: 1299 [2022-01-18 03:13:23,221 INFO L226 Difference]: Without dead ends: 1164 [2022-01-18 03:13:23,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:13:23,222 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 269 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:23,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2964 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:13:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-18 03:13:23,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1075. [2022-01-18 03:13:23,230 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 03:13:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 03:13:23,231 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 03:13:23,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:23,231 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 03:13:23,232 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 03:13:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 03:13:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:23,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:23,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:23,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-18 03:13:23,233 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:23,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:23,233 INFO L85 PathProgramCache]: Analyzing trace with hash 723193486, now seen corresponding path program 163 times [2022-01-18 03:13:23,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:23,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947199497] [2022-01-18 03:13:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:23,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:23,502 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 03:13:23,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:23,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947199497] [2022-01-18 03:13:23,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947199497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:23,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:23,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:23,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147580790] [2022-01-18 03:13:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:23,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:23,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:23,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:23,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:23,503 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 03:13:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:24,542 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-01-18 03:13:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:13:24,542 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 03:13:24,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:24,544 INFO L225 Difference]: With dead ends: 1275 [2022-01-18 03:13:24,544 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 03:13:24,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:13:24,544 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 257 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:24,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2603 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:13:24,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 03:13:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1035. [2022-01-18 03:13:24,552 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 03:13:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-01-18 03:13:24,554 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-01-18 03:13:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:24,554 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-01-18 03:13:24,554 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 03:13:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-01-18 03:13:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:24,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:24,555 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 03:13:24,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-18 03:13:24,555 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:24,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:24,555 INFO L85 PathProgramCache]: Analyzing trace with hash 799262638, now seen corresponding path program 164 times [2022-01-18 03:13:24,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:24,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110914645] [2022-01-18 03:13:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:24,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:24,898 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 03:13:24,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:24,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110914645] [2022-01-18 03:13:24,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110914645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:24,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:24,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:13:24,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033275171] [2022-01-18 03:13:24,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:24,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:13:24,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:24,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:13:24,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:13:24,899 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 03:13:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:26,633 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-01-18 03:13:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:13:26,633 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 03:13:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:26,635 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 03:13:26,635 INFO L226 Difference]: Without dead ends: 1249 [2022-01-18 03:13:26,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:13:26,635 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 330 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:26,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 2749 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:13:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-01-18 03:13:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1087. [2022-01-18 03:13:26,644 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 03:13:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:13:26,645 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:13:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:26,645 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:13:26,645 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 03:13:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:13:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:26,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:26,646 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 03:13:26,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-18 03:13:26,646 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:26,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:26,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2115795530, now seen corresponding path program 165 times [2022-01-18 03:13:26,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:26,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137882323] [2022-01-18 03:13:26,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:26,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:26,951 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 03:13:26,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:26,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137882323] [2022-01-18 03:13:26,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137882323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:26,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:26,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:13:26,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921820016] [2022-01-18 03:13:26,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:26,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:13:26,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:26,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:13:26,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:13:26,952 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 03:13:28,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:28,860 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-01-18 03:13:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:13:28,860 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 03:13:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:28,862 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 03:13:28,862 INFO L226 Difference]: Without dead ends: 1168 [2022-01-18 03:13:28,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:13:28,862 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 332 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:28,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2872 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:13:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-01-18 03:13:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-01-18 03:13:28,871 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 03:13:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-01-18 03:13:28,872 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-01-18 03:13:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:28,872 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-01-18 03:13:28,872 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 03:13:28,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-01-18 03:13:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:28,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:28,873 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 03:13:28,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-18 03:13:28,873 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:28,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:28,873 INFO L85 PathProgramCache]: Analyzing trace with hash 747789966, now seen corresponding path program 166 times [2022-01-18 03:13:28,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:28,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085547186] [2022-01-18 03:13:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:28,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:29,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:29,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085547186] [2022-01-18 03:13:29,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085547186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:29,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:29,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:29,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4803623] [2022-01-18 03:13:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:29,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:29,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:29,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:29,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:29,197 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 03:13:30,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:30,262 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-01-18 03:13:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:13:30,262 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 03:13:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:30,263 INFO L225 Difference]: With dead ends: 1267 [2022-01-18 03:13:30,263 INFO L226 Difference]: Without dead ends: 1087 [2022-01-18 03:13:30,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:13:30,264 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 303 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:30,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2641 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:13:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-01-18 03:13:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-01-18 03:13:30,272 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 03:13:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-01-18 03:13:30,273 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-01-18 03:13:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:30,273 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-01-18 03:13:30,273 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 03:13:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-01-18 03:13:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:30,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:30,274 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 03:13:30,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-18 03:13:30,274 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1561685210, now seen corresponding path program 167 times [2022-01-18 03:13:30,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:30,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781958489] [2022-01-18 03:13:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:30,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:30,571 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 03:13:30,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:30,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781958489] [2022-01-18 03:13:30,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781958489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:30,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:30,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:13:30,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584438782] [2022-01-18 03:13:30,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:30,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:13:30,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:13:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:13:30,572 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 03:13:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:31,448 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-01-18 03:13:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:13:31,448 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 03:13:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:31,450 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 03:13:31,450 INFO L226 Difference]: Without dead ends: 1043 [2022-01-18 03:13:31,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 03:13:31,450 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 275 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:31,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2367 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:13:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-01-18 03:13:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1015. [2022-01-18 03:13:31,458 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 03:13:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2523 transitions. [2022-01-18 03:13:31,459 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2523 transitions. Word has length 79 [2022-01-18 03:13:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:31,459 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2523 transitions. [2022-01-18 03:13:31,459 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 03:13:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2523 transitions. [2022-01-18 03:13:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:31,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:31,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:31,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-18 03:13:31,461 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash 441084520, now seen corresponding path program 168 times [2022-01-18 03:13:31,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:31,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014314347] [2022-01-18 03:13:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:31,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:31,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:31,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014314347] [2022-01-18 03:13:31,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014314347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:31,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:31,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:13:31,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992844827] [2022-01-18 03:13:31,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:31,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:13:31,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:31,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:13:31,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:13:31,826 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 03:13:33,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:33,271 INFO L93 Difference]: Finished difference Result 1337 states and 3338 transitions. [2022-01-18 03:13:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:13:33,271 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 03:13:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:33,273 INFO L225 Difference]: With dead ends: 1337 [2022-01-18 03:13:33,273 INFO L226 Difference]: Without dead ends: 1207 [2022-01-18 03:13:33,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2720, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:13:33,273 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 303 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:33,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 3079 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:13:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-18 03:13:33,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1099. [2022-01-18 03:13:33,282 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 03:13:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2746 transitions. [2022-01-18 03:13:33,283 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2746 transitions. Word has length 79 [2022-01-18 03:13:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:33,283 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2746 transitions. [2022-01-18 03:13:33,283 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 03:13:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2746 transitions. [2022-01-18 03:13:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:33,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:33,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:33,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-18 03:13:33,284 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:33,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:33,285 INFO L85 PathProgramCache]: Analyzing trace with hash -412306646, now seen corresponding path program 169 times [2022-01-18 03:13:33,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:33,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510384841] [2022-01-18 03:13:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:33,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:33,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:33,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510384841] [2022-01-18 03:13:33,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510384841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:33,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:33,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:13:33,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486776000] [2022-01-18 03:13:33,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:33,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:13:33,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:13:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:13:33,605 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 03:13:36,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:13:38,658 WARN L534 Checker$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 03:13:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:39,246 INFO L93 Difference]: Finished difference Result 1372 states and 3420 transitions. [2022-01-18 03:13:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:13:39,246 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 03:13:39,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:39,248 INFO L225 Difference]: With dead ends: 1372 [2022-01-18 03:13:39,248 INFO L226 Difference]: Without dead ends: 1274 [2022-01-18 03:13:39,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=284, Invalid=3138, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 03:13:39,249 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 302 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:39,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 3080 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1226 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-01-18 03:13:39,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-01-18 03:13:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1127. [2022-01-18 03:13:39,258 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 03:13:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2811 transitions. [2022-01-18 03:13:39,268 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2811 transitions. Word has length 79 [2022-01-18 03:13:39,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:39,268 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2811 transitions. [2022-01-18 03:13:39,268 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 03:13:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2811 transitions. [2022-01-18 03:13:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:39,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:39,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:39,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-18 03:13:39,270 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:39,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:39,270 INFO L85 PathProgramCache]: Analyzing trace with hash 301930632, now seen corresponding path program 170 times [2022-01-18 03:13:39,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:39,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162297784] [2022-01-18 03:13:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:39,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:39,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:39,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162297784] [2022-01-18 03:13:39,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162297784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:39,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:39,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:13:39,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295719695] [2022-01-18 03:13:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:39,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:13:39,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:13:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:13:39,601 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 03:13:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:41,131 INFO L93 Difference]: Finished difference Result 1347 states and 3349 transitions. [2022-01-18 03:13:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:13:41,132 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 03:13:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:41,133 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 03:13:41,133 INFO L226 Difference]: Without dead ends: 1234 [2022-01-18 03:13:41,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=261, Invalid=2819, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:13:41,134 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 336 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:41,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2855 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:13:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-18 03:13:41,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1119. [2022-01-18 03:13:41,143 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 03:13:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2785 transitions. [2022-01-18 03:13:41,145 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2785 transitions. Word has length 79 [2022-01-18 03:13:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:41,145 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2785 transitions. [2022-01-18 03:13:41,145 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 03:13:41,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2785 transitions. [2022-01-18 03:13:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:41,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:41,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:41,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-18 03:13:41,146 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash 627378858, now seen corresponding path program 171 times [2022-01-18 03:13:41,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:41,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229190457] [2022-01-18 03:13:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:41,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:41,492 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 03:13:41,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:41,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229190457] [2022-01-18 03:13:41,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229190457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:41,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:41,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:13:41,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701950734] [2022-01-18 03:13:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:41,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:13:41,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:13:41,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:13:41,493 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 03:13:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:44,104 INFO L93 Difference]: Finished difference Result 1341 states and 3325 transitions. [2022-01-18 03:13:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:13:44,104 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 03:13:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:44,105 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 03:13:44,106 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 03:13:44,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=233, Invalid=2523, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 03:13:44,106 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 308 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:44,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 2894 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 03:13:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 03:13:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1115. [2022-01-18 03:13:44,114 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 03:13:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2774 transitions. [2022-01-18 03:13:44,115 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2774 transitions. Word has length 79 [2022-01-18 03:13:44,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:44,116 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2774 transitions. [2022-01-18 03:13:44,116 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 03:13:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2774 transitions. [2022-01-18 03:13:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:44,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:44,117 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 03:13:44,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-18 03:13:44,117 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1488961192, now seen corresponding path program 172 times [2022-01-18 03:13:44,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:44,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656589771] [2022-01-18 03:13:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:44,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:44,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:44,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656589771] [2022-01-18 03:13:44,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656589771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:44,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:44,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:44,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588363482] [2022-01-18 03:13:44,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:44,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:44,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:44,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:44,420 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 03:13:45,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:45,987 INFO L93 Difference]: Finished difference Result 1346 states and 3332 transitions. [2022-01-18 03:13:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:13:45,988 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 03:13:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:45,989 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 03:13:45,989 INFO L226 Difference]: Without dead ends: 1248 [2022-01-18 03:13:45,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:13:45,990 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 290 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:45,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2726 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:13:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-01-18 03:13:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1139. [2022-01-18 03:13:45,998 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 03:13:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2832 transitions. [2022-01-18 03:13:45,999 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2832 transitions. Word has length 79 [2022-01-18 03:13:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:46,000 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2832 transitions. [2022-01-18 03:13:46,000 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 03:13:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2832 transitions. [2022-01-18 03:13:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:46,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:46,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:46,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-18 03:13:46,001 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:46,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:46,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1489473212, now seen corresponding path program 173 times [2022-01-18 03:13:46,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:46,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752241263] [2022-01-18 03:13:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:46,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:46,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:46,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752241263] [2022-01-18 03:13:46,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752241263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:46,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:46,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:46,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624355163] [2022-01-18 03:13:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:46,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:46,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:46,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:46,301 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 03:13:47,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:47,787 INFO L93 Difference]: Finished difference Result 1314 states and 3244 transitions. [2022-01-18 03:13:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:13:47,787 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 03:13:47,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:47,788 INFO L225 Difference]: With dead ends: 1314 [2022-01-18 03:13:47,788 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 03:13:47,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:13:47,789 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 290 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:47,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2692 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:13:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 03:13:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1091. [2022-01-18 03:13:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.4844036697247707) internal successors, (2708), 1090 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:13:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2708 transitions. [2022-01-18 03:13:47,798 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2708 transitions. Word has length 79 [2022-01-18 03:13:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:47,798 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2708 transitions. [2022-01-18 03:13:47,798 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 03:13:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2708 transitions. [2022-01-18 03:13:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:47,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:47,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:47,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-18 03:13:47,799 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1009207256, now seen corresponding path program 174 times [2022-01-18 03:13:47,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:47,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797951704] [2022-01-18 03:13:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:47,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:48,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:48,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797951704] [2022-01-18 03:13:48,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797951704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:48,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:48,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:48,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508826329] [2022-01-18 03:13:48,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:48,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:48,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:48,101 INFO L87 Difference]: Start difference. First operand 1091 states and 2708 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 03:13:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:49,497 INFO L93 Difference]: Finished difference Result 1332 states and 3302 transitions. [2022-01-18 03:13:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:13:49,497 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 03:13:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:49,499 INFO L225 Difference]: With dead ends: 1332 [2022-01-18 03:13:49,499 INFO L226 Difference]: Without dead ends: 1206 [2022-01-18 03:13:49,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:13:49,499 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 298 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:49,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2646 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:13:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-01-18 03:13:49,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1091. [2022-01-18 03:13:49,508 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 03:13:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-01-18 03:13:49,509 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-01-18 03:13:49,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:49,509 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-01-18 03:13:49,509 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 03:13:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-01-18 03:13:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:49,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:49,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:49,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-18 03:13:49,510 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:49,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:49,510 INFO L85 PathProgramCache]: Analyzing trace with hash 782695082, now seen corresponding path program 175 times [2022-01-18 03:13:49,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:49,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294936385] [2022-01-18 03:13:49,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:49,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:49,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:49,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294936385] [2022-01-18 03:13:49,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294936385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:49,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:49,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:49,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237435206] [2022-01-18 03:13:49,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:49,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:49,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:49,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:49,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:49,832 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 03:13:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:51,810 INFO L93 Difference]: Finished difference Result 1285 states and 3187 transitions. [2022-01-18 03:13:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:13:51,811 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 03:13:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:51,812 INFO L225 Difference]: With dead ends: 1285 [2022-01-18 03:13:51,812 INFO L226 Difference]: Without dead ends: 1171 [2022-01-18 03:13:51,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:13:51,812 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 273 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:51,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2649 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 03:13:51,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-01-18 03:13:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1091. [2022-01-18 03:13:51,820 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 03:13:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2716 transitions. [2022-01-18 03:13:51,822 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2716 transitions. Word has length 79 [2022-01-18 03:13:51,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:51,822 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2716 transitions. [2022-01-18 03:13:51,822 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 03:13:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2716 transitions. [2022-01-18 03:13:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:51,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:51,823 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 03:13:51,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-18 03:13:51,823 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:51,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1130037930, now seen corresponding path program 176 times [2022-01-18 03:13:51,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:51,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287388828] [2022-01-18 03:13:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:51,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:52,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:52,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287388828] [2022-01-18 03:13:52,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287388828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:52,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:52,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:52,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691843547] [2022-01-18 03:13:52,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:52,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:52,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:52,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:52,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:52,158 INFO L87 Difference]: Start difference. First operand 1091 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 03:13:54,683 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 03:13:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:55,323 INFO L93 Difference]: Finished difference Result 1260 states and 3120 transitions. [2022-01-18 03:13:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:13:55,323 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 03:13:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:55,325 INFO L225 Difference]: With dead ends: 1260 [2022-01-18 03:13:55,325 INFO L226 Difference]: Without dead ends: 1151 [2022-01-18 03:13:55,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:13:55,325 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 298 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:55,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2658 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1021 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 03:13:55,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-01-18 03:13:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1083. [2022-01-18 03:13:55,333 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 03:13:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-01-18 03:13:55,334 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-01-18 03:13:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:55,334 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-01-18 03:13:55,335 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 03:13:55,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-01-18 03:13:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:55,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:55,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:55,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-18 03:13:55,336 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1600728744, now seen corresponding path program 177 times [2022-01-18 03:13:55,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:55,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763834980] [2022-01-18 03:13:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:55,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:55,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:55,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763834980] [2022-01-18 03:13:55,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763834980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:55,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:55,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:55,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830398875] [2022-01-18 03:13:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:55,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:55,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:55,640 INFO L87 Difference]: Start difference. First operand 1083 states and 2698 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 03:13:56,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:13:56,893 INFO L93 Difference]: Finished difference Result 1314 states and 3256 transitions. [2022-01-18 03:13:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:13:56,893 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 03:13:56,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:13:56,894 INFO L225 Difference]: With dead ends: 1314 [2022-01-18 03:13:56,894 INFO L226 Difference]: Without dead ends: 1216 [2022-01-18 03:13:56,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:13:56,895 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 268 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:13:56,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2650 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:13:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-01-18 03:13:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1107. [2022-01-18 03:13:56,903 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 03:13:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-01-18 03:13:56,904 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-01-18 03:13:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:13:56,904 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-01-18 03:13:56,904 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 03:13:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-01-18 03:13:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:13:56,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:13:56,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:13:56,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-18 03:13:56,905 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:13:56,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:13:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1377705660, now seen corresponding path program 178 times [2022-01-18 03:13:56,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:13:56,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818898290] [2022-01-18 03:13:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:13:56,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:13:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:13:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:13:57,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:13:57,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818898290] [2022-01-18 03:13:57,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818898290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:13:57,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:13:57,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:13:57,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354463886] [2022-01-18 03:13:57,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:13:57,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:13:57,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:13:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:13:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:13:57,195 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 03:13:59,758 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 03:14:00,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:00,996 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-01-18 03:14:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:14:00,997 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 03:14:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:00,998 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 03:14:00,998 INFO L226 Difference]: Without dead ends: 1139 [2022-01-18 03:14:00,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:14:00,999 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 299 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:00,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2641 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1017 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-01-18 03:14:01,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-18 03:14:01,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1075. [2022-01-18 03:14:01,007 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 03:14:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:14:01,008 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:14:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:01,008 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:14:01,008 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 03:14:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:14:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:01,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:01,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:01,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-18 03:14:01,009 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:01,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1860354682, now seen corresponding path program 179 times [2022-01-18 03:14:01,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:01,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631796416] [2022-01-18 03:14:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:01,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:01,331 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 03:14:01,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:01,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631796416] [2022-01-18 03:14:01,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631796416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:01,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:01,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:14:01,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718446327] [2022-01-18 03:14:01,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:01,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:14:01,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:01,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:14:01,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:14:01,333 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 03:14:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:02,814 INFO L93 Difference]: Finished difference Result 1357 states and 3364 transitions. [2022-01-18 03:14:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:14:02,815 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 03:14:02,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:02,816 INFO L225 Difference]: With dead ends: 1357 [2022-01-18 03:14:02,816 INFO L226 Difference]: Without dead ends: 1259 [2022-01-18 03:14:02,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:14:02,817 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 301 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:02,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 3220 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:14:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-01-18 03:14:02,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1103. [2022-01-18 03:14:02,825 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 03:14:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-01-18 03:14:02,826 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-01-18 03:14:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:02,827 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-01-18 03:14:02,827 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 03:14:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-01-18 03:14:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:02,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:02,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:02,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-01-18 03:14:02,828 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash -543821790, now seen corresponding path program 180 times [2022-01-18 03:14:02,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:02,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671070485] [2022-01-18 03:14:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:02,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:03,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:03,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671070485] [2022-01-18 03:14:03,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671070485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:03,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:03,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:14:03,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144583859] [2022-01-18 03:14:03,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:03,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:14:03,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:03,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:14:03,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:14:03,149 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 03:14:04,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:04,655 INFO L93 Difference]: Finished difference Result 1313 states and 3247 transitions. [2022-01-18 03:14:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:14:04,655 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 03:14:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:04,657 INFO L225 Difference]: With dead ends: 1313 [2022-01-18 03:14:04,657 INFO L226 Difference]: Without dead ends: 1178 [2022-01-18 03:14:04,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=257, Invalid=2823, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:14:04,657 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 303 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:04,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 3062 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:14:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-01-18 03:14:04,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1079. [2022-01-18 03:14:04,665 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 03:14:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-01-18 03:14:04,667 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-01-18 03:14:04,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:04,667 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-01-18 03:14:04,667 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 03:14:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-01-18 03:14:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:04,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:04,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:04,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-01-18 03:14:04,668 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1674336820, now seen corresponding path program 181 times [2022-01-18 03:14:04,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:04,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92121039] [2022-01-18 03:14:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:04,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:04,970 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 03:14:04,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:04,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92121039] [2022-01-18 03:14:04,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92121039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:04,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:04,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:04,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239573096] [2022-01-18 03:14:04,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:04,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:04,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:04,971 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 03:14:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:06,141 INFO L93 Difference]: Finished difference Result 1301 states and 3214 transitions. [2022-01-18 03:14:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:14:06,142 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 03:14:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:06,143 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 03:14:06,143 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 03:14:06,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:14:06,143 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 296 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:06,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2843 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:14:06,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 03:14:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1063. [2022-01-18 03:14:06,151 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 03:14:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 03:14:06,152 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 03:14:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:06,152 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 03:14:06,152 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 03:14:06,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 03:14:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:06,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:06,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:06,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-01-18 03:14:06,153 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:06,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:06,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1232646802, now seen corresponding path program 182 times [2022-01-18 03:14:06,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:06,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281145472] [2022-01-18 03:14:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:06,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:06,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:06,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281145472] [2022-01-18 03:14:06,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281145472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:06,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:06,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:06,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993004343] [2022-01-18 03:14:06,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:06,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:06,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:06,469 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 03:14:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:08,173 INFO L93 Difference]: Finished difference Result 1339 states and 3306 transitions. [2022-01-18 03:14:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:14:08,173 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 03:14:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:08,175 INFO L225 Difference]: With dead ends: 1339 [2022-01-18 03:14:08,175 INFO L226 Difference]: Without dead ends: 1241 [2022-01-18 03:14:08,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=2421, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:14:08,176 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 309 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:08,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2771 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:14:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-01-18 03:14:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1111. [2022-01-18 03:14:08,184 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 03:14:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2767 transitions. [2022-01-18 03:14:08,186 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2767 transitions. Word has length 79 [2022-01-18 03:14:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:08,186 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2767 transitions. [2022-01-18 03:14:08,186 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 03:14:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2767 transitions. [2022-01-18 03:14:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:08,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:08,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:08,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-01-18 03:14:08,187 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash 83886090, now seen corresponding path program 183 times [2022-01-18 03:14:08,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:08,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033405313] [2022-01-18 03:14:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:08,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:08,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:08,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033405313] [2022-01-18 03:14:08,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033405313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:08,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:08,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:08,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146140017] [2022-01-18 03:14:08,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:08,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:08,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:08,477 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 03:14:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:10,062 INFO L93 Difference]: Finished difference Result 1307 states and 3218 transitions. [2022-01-18 03:14:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:14:10,062 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 03:14:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:10,064 INFO L225 Difference]: With dead ends: 1307 [2022-01-18 03:14:10,064 INFO L226 Difference]: Without dead ends: 1172 [2022-01-18 03:14:10,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=2327, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:14:10,064 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 274 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:10,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2868 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:14:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-01-18 03:14:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1087. [2022-01-18 03:14:10,072 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 03:14:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:14:10,073 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:14:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:10,074 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:14:10,074 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 03:14:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:14:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:10,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:10,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:10,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-01-18 03:14:10,075 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:10,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1284119474, now seen corresponding path program 184 times [2022-01-18 03:14:10,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:10,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585566464] [2022-01-18 03:14:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:10,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:10,386 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 03:14:10,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:10,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585566464] [2022-01-18 03:14:10,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585566464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:10,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:10,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:10,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461194163] [2022-01-18 03:14:10,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:10,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:10,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:10,387 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 03:14:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:11,856 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-01-18 03:14:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 03:14:11,856 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 03:14:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:11,858 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 03:14:11,858 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 03:14:11,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:14:11,858 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 262 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:11,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2787 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:14:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 03:14:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-01-18 03:14:11,866 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 03:14:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2581 transitions. [2022-01-18 03:14:11,867 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2581 transitions. Word has length 79 [2022-01-18 03:14:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:11,868 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2581 transitions. [2022-01-18 03:14:11,868 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 03:14:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2581 transitions. [2022-01-18 03:14:11,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:11,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:11,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:11,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-01-18 03:14:11,869 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:11,869 INFO L85 PathProgramCache]: Analyzing trace with hash -399222648, now seen corresponding path program 185 times [2022-01-18 03:14:11,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:11,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196797885] [2022-01-18 03:14:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:11,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:12,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:12,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196797885] [2022-01-18 03:14:12,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196797885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:12,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:12,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:12,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863325066] [2022-01-18 03:14:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:12,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:12,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:12,195 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 03:14:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:13,146 INFO L93 Difference]: Finished difference Result 1257 states and 3114 transitions. [2022-01-18 03:14:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:14:13,146 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 03:14:13,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:13,147 INFO L225 Difference]: With dead ends: 1257 [2022-01-18 03:14:13,147 INFO L226 Difference]: Without dead ends: 1143 [2022-01-18 03:14:13,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:14:13,148 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 265 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:13,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 2127 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:14:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-01-18 03:14:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1075. [2022-01-18 03:14:13,158 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 03:14:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:14:13,159 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:14:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:13,159 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:14:13,159 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 03:14:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:14:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:13,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:13,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:13,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-01-18 03:14:13,160 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash -766117078, now seen corresponding path program 186 times [2022-01-18 03:14:13,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:13,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819622861] [2022-01-18 03:14:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:13,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:13,451 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 03:14:13,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:13,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819622861] [2022-01-18 03:14:13,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819622861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:13,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:13,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:13,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807895130] [2022-01-18 03:14:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:13,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:13,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:13,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:13,453 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 03:14:14,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:14,471 INFO L93 Difference]: Finished difference Result 1268 states and 3138 transitions. [2022-01-18 03:14:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:14:14,472 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 03:14:14,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:14,473 INFO L225 Difference]: With dead ends: 1268 [2022-01-18 03:14:14,473 INFO L226 Difference]: Without dead ends: 1170 [2022-01-18 03:14:14,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:14:14,474 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 240 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:14,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 2442 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:14:14,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-01-18 03:14:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1079. [2022-01-18 03:14:14,481 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 03:14:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2683 transitions. [2022-01-18 03:14:14,483 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2683 transitions. Word has length 79 [2022-01-18 03:14:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:14,483 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2683 transitions. [2022-01-18 03:14:14,483 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 03:14:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2683 transitions. [2022-01-18 03:14:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:14,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:14,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:14,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-01-18 03:14:14,484 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -51879800, now seen corresponding path program 187 times [2022-01-18 03:14:14,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:14,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488146818] [2022-01-18 03:14:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:14,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:14,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:14,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488146818] [2022-01-18 03:14:14,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488146818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:14,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:14,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:14,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964808611] [2022-01-18 03:14:14,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:14,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:14,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:14,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:14,808 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 03:14:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:15,779 INFO L93 Difference]: Finished difference Result 1236 states and 3054 transitions. [2022-01-18 03:14:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:14:15,779 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 03:14:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:15,781 INFO L225 Difference]: With dead ends: 1236 [2022-01-18 03:14:15,781 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 03:14:15,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:14:15,781 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 269 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:15,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2264 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:14:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 03:14:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1071. [2022-01-18 03:14:15,801 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 03:14:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2665 transitions. [2022-01-18 03:14:15,802 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2665 transitions. Word has length 79 [2022-01-18 03:14:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:15,802 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2665 transitions. [2022-01-18 03:14:15,802 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 03:14:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2665 transitions. [2022-01-18 03:14:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:15,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:15,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:15,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-01-18 03:14:15,803 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash 418811014, now seen corresponding path program 188 times [2022-01-18 03:14:15,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797366038] [2022-01-18 03:14:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:15,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:16,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:16,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797366038] [2022-01-18 03:14:16,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797366038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:16,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:16,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:16,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226249236] [2022-01-18 03:14:16,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:16,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:16,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:16,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:16,095 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 03:14:17,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:17,192 INFO L93 Difference]: Finished difference Result 1290 states and 3190 transitions. [2022-01-18 03:14:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:14:17,192 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 03:14:17,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:17,194 INFO L225 Difference]: With dead ends: 1290 [2022-01-18 03:14:17,194 INFO L226 Difference]: Without dead ends: 1192 [2022-01-18 03:14:17,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:14:17,194 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 262 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:17,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2393 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:14:17,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-01-18 03:14:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1095. [2022-01-18 03:14:17,207 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 03:14:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-01-18 03:14:17,208 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-01-18 03:14:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:17,208 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-01-18 03:14:17,208 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 03:14:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-01-18 03:14:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:17,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:17,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:17,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-01-18 03:14:17,210 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:17,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1735343906, now seen corresponding path program 189 times [2022-01-18 03:14:17,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:17,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978167780] [2022-01-18 03:14:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:17,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:17,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:17,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978167780] [2022-01-18 03:14:17,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978167780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:17,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:17,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:17,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332146918] [2022-01-18 03:14:17,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:17,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:17,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:17,482 INFO L87 Difference]: Start difference. First operand 1095 states and 2723 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 03:14:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:18,437 INFO L93 Difference]: Finished difference Result 1258 states and 3102 transitions. [2022-01-18 03:14:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:14:18,437 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 03:14:18,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:18,439 INFO L225 Difference]: With dead ends: 1258 [2022-01-18 03:14:18,439 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 03:14:18,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:14:18,439 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 261 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:18,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2365 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:14:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 03:14:18,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1063. [2022-01-18 03:14:18,447 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 03:14:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2643 transitions. [2022-01-18 03:14:18,448 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2643 transitions. Word has length 79 [2022-01-18 03:14:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:18,448 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2643 transitions. [2022-01-18 03:14:18,448 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 03:14:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2643 transitions. [2022-01-18 03:14:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:18,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:18,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:18,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-01-18 03:14:18,450 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:18,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:18,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1252694884, now seen corresponding path program 190 times [2022-01-18 03:14:18,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:18,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170208269] [2022-01-18 03:14:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:18,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:18,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170208269] [2022-01-18 03:14:18,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170208269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:18,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:18,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:18,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386342711] [2022-01-18 03:14:18,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:18,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:18,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:18,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:18,760 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 03:14:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:19,978 INFO L93 Difference]: Finished difference Result 1333 states and 3298 transitions. [2022-01-18 03:14:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:14:19,978 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 03:14:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:19,980 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 03:14:19,980 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 03:14:19,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:14:19,980 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 295 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:19,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2805 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:14:19,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 03:14:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1091. [2022-01-18 03:14:19,989 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 03:14:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-01-18 03:14:19,990 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-01-18 03:14:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:19,990 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-01-18 03:14:19,990 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 03:14:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-01-18 03:14:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:19,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:19,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:19,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-01-18 03:14:19,991 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1725739520, now seen corresponding path program 191 times [2022-01-18 03:14:19,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:19,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287748685] [2022-01-18 03:14:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:19,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:20,277 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 03:14:20,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:20,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287748685] [2022-01-18 03:14:20,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287748685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:20,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:20,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:20,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875809916] [2022-01-18 03:14:20,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:20,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:20,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:20,278 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 03:14:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:21,440 INFO L93 Difference]: Finished difference Result 1289 states and 3181 transitions. [2022-01-18 03:14:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:14:21,440 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 03:14:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:21,441 INFO L225 Difference]: With dead ends: 1289 [2022-01-18 03:14:21,441 INFO L226 Difference]: Without dead ends: 1154 [2022-01-18 03:14:21,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:14:21,442 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 297 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:21,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2794 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:14:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-01-18 03:14:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1067. [2022-01-18 03:14:21,450 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 03:14:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-01-18 03:14:21,451 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-01-18 03:14:21,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:21,451 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-01-18 03:14:21,451 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 03:14:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-01-18 03:14:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:21,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:21,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:21,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-01-18 03:14:21,454 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:21,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:21,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1438712746, now seen corresponding path program 192 times [2022-01-18 03:14:21,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:21,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587424380] [2022-01-18 03:14:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:21,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:21,749 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 03:14:21,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:21,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587424380] [2022-01-18 03:14:21,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587424380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:21,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:21,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:21,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309347550] [2022-01-18 03:14:21,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:21,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:21,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:21,751 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 03:14:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:22,765 INFO L93 Difference]: Finished difference Result 1277 states and 3148 transitions. [2022-01-18 03:14:22,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:14:22,765 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 03:14:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:22,767 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 03:14:22,767 INFO L226 Difference]: Without dead ends: 1111 [2022-01-18 03:14:22,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:14:22,767 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 272 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:22,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2708 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:14:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-01-18 03:14:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1059. [2022-01-18 03:14:22,775 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 03:14:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 03:14:22,776 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 03:14:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:22,776 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 03:14:22,776 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 03:14:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 03:14:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:22,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:22,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:22,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-01-18 03:14:22,778 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:22,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -393906834, now seen corresponding path program 193 times [2022-01-18 03:14:22,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:22,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941695981] [2022-01-18 03:14:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:22,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:23,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:23,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941695981] [2022-01-18 03:14:23,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941695981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:23,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:23,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:23,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531186600] [2022-01-18 03:14:23,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:23,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:23,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:23,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:23,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:23,083 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 03:14:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:24,716 INFO L93 Difference]: Finished difference Result 1335 states and 3295 transitions. [2022-01-18 03:14:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:14:24,716 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 03:14:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:24,718 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 03:14:24,718 INFO L226 Difference]: Without dead ends: 1237 [2022-01-18 03:14:24,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2328, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:14:24,719 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 270 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:24,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 2701 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:14:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-01-18 03:14:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1107. [2022-01-18 03:14:24,727 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 03:14:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2756 transitions. [2022-01-18 03:14:24,728 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2756 transitions. Word has length 79 [2022-01-18 03:14:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:24,729 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2756 transitions. [2022-01-18 03:14:24,729 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 03:14:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2756 transitions. [2022-01-18 03:14:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:24,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:24,730 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 03:14:24,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-01-18 03:14:24,730 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 922626058, now seen corresponding path program 194 times [2022-01-18 03:14:24,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:24,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905050191] [2022-01-18 03:14:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:24,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:25,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:25,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905050191] [2022-01-18 03:14:25,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905050191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:25,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:25,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:25,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667031410] [2022-01-18 03:14:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:25,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:25,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:25,033 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 03:14:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:26,232 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-01-18 03:14:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:14:26,233 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 03:14:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:26,234 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 03:14:26,234 INFO L226 Difference]: Without dead ends: 1168 [2022-01-18 03:14:26,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:14:26,235 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 269 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:26,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2813 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:14:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-01-18 03:14:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1083. [2022-01-18 03:14:26,243 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 03:14:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-01-18 03:14:26,244 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-01-18 03:14:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:26,244 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-01-18 03:14:26,244 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 03:14:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-01-18 03:14:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:26,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:26,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:26,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-01-18 03:14:26,246 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:26,246 INFO L85 PathProgramCache]: Analyzing trace with hash -445379506, now seen corresponding path program 195 times [2022-01-18 03:14:26,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:26,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992319409] [2022-01-18 03:14:26,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:26,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:26,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:26,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992319409] [2022-01-18 03:14:26,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992319409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:26,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:26,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:26,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210809798] [2022-01-18 03:14:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:26,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:26,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:26,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:26,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:26,545 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 03:14:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:27,571 INFO L93 Difference]: Finished difference Result 1279 states and 3141 transitions. [2022-01-18 03:14:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:14:27,572 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 03:14:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:27,573 INFO L225 Difference]: With dead ends: 1279 [2022-01-18 03:14:27,573 INFO L226 Difference]: Without dead ends: 1091 [2022-01-18 03:14:27,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:14:27,573 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 284 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:27,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2467 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:14:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-01-18 03:14:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-01-18 03:14:27,582 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 03:14:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 03:14:27,583 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 03:14:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:27,583 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 03:14:27,583 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 03:14:27,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 03:14:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:27,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:27,584 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 03:14:27,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-01-18 03:14:27,584 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:27,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1055912688, now seen corresponding path program 196 times [2022-01-18 03:14:27,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:27,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291991000] [2022-01-18 03:14:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:27,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:27,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:27,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291991000] [2022-01-18 03:14:27,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291991000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:27,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:27,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:14:27,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460151667] [2022-01-18 03:14:27,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:27,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:14:27,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:27,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:14:27,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:14:27,925 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 03:14:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:30,149 INFO L93 Difference]: Finished difference Result 1375 states and 3401 transitions. [2022-01-18 03:14:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:14:30,149 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 03:14:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:30,150 INFO L225 Difference]: With dead ends: 1375 [2022-01-18 03:14:30,151 INFO L226 Difference]: Without dead ends: 1277 [2022-01-18 03:14:30,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=261, Invalid=3045, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:14:30,151 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 339 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:30,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2893 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 03:14:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-01-18 03:14:30,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1103. [2022-01-18 03:14:30,159 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 03:14:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2745 transitions. [2022-01-18 03:14:30,161 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2745 transitions. Word has length 79 [2022-01-18 03:14:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:30,161 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2745 transitions. [2022-01-18 03:14:30,161 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 03:14:30,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2745 transitions. [2022-01-18 03:14:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:30,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:30,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:30,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-01-18 03:14:30,162 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 260620204, now seen corresponding path program 197 times [2022-01-18 03:14:30,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:30,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025887030] [2022-01-18 03:14:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:30,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:30,492 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 03:14:30,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:30,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025887030] [2022-01-18 03:14:30,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025887030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:30,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:30,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:14:30,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455584669] [2022-01-18 03:14:30,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:30,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:14:30,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:30,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:14:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:14:30,493 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 03:14:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:31,934 INFO L93 Difference]: Finished difference Result 1331 states and 3284 transitions. [2022-01-18 03:14:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:14:31,934 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 03:14:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:31,936 INFO L225 Difference]: With dead ends: 1331 [2022-01-18 03:14:31,936 INFO L226 Difference]: Without dead ends: 1196 [2022-01-18 03:14:31,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=2939, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:14:31,937 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, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:31,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2878 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:14:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-01-18 03:14:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1079. [2022-01-18 03:14:31,945 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 03:14:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2679 transitions. [2022-01-18 03:14:31,946 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2679 transitions. Word has length 79 [2022-01-18 03:14:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:31,947 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2679 transitions. [2022-01-18 03:14:31,947 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 03:14:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2679 transitions. [2022-01-18 03:14:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:31,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:31,948 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 03:14:31,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-01-18 03:14:31,948 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:31,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1107385360, now seen corresponding path program 198 times [2022-01-18 03:14:31,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:31,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974619917] [2022-01-18 03:14:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:31,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:32,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:32,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974619917] [2022-01-18 03:14:32,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974619917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:32,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:32,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:32,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902869537] [2022-01-18 03:14:32,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:32,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:32,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:32,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:32,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:32,252 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 03:14:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:33,409 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-01-18 03:14:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:14:33,410 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 03:14:33,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:33,411 INFO L225 Difference]: With dead ends: 1295 [2022-01-18 03:14:33,411 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 03:14:33,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=2244, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:14:33,412 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 298 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:33,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2657 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:14:33,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 03:14:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1055. [2022-01-18 03:14:33,420 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 03:14:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-01-18 03:14:33,421 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-01-18 03:14:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:33,421 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-01-18 03:14:33,421 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 03:14:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-01-18 03:14:33,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:33,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:33,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:33,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-01-18 03:14:33,422 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:33,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash 878106760, now seen corresponding path program 199 times [2022-01-18 03:14:33,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:33,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549685200] [2022-01-18 03:14:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:33,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:33,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:33,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549685200] [2022-01-18 03:14:33,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549685200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:33,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:33,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:33,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127605883] [2022-01-18 03:14:33,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:33,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:33,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:33,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:33,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:33,734 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 03:14:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:34,727 INFO L93 Difference]: Finished difference Result 1310 states and 3220 transitions. [2022-01-18 03:14:34,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:14:34,727 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 03:14:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:34,729 INFO L225 Difference]: With dead ends: 1310 [2022-01-18 03:14:34,729 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 03:14:34,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:14:34,729 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 274 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:34,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2717 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:14:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 03:14:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1039. [2022-01-18 03:14:34,737 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 03:14:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-01-18 03:14:34,738 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-01-18 03:14:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:34,738 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-01-18 03:14:34,738 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 03:14:34,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-01-18 03:14:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:34,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:34,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:34,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-01-18 03:14:34,739 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash -817748414, now seen corresponding path program 200 times [2022-01-18 03:14:34,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:34,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012827400] [2022-01-18 03:14:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:34,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:35,068 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 03:14:35,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:35,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012827400] [2022-01-18 03:14:35,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012827400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:35,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:35,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:35,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871842184] [2022-01-18 03:14:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:35,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:35,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:35,070 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 03:14:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:36,908 INFO L93 Difference]: Finished difference Result 1355 states and 3346 transitions. [2022-01-18 03:14:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:14:36,908 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 03:14:36,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:36,910 INFO L225 Difference]: With dead ends: 1355 [2022-01-18 03:14:36,910 INFO L226 Difference]: Without dead ends: 1257 [2022-01-18 03:14:36,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:14:36,910 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 312 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:36,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2523 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:14:36,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-01-18 03:14:36,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1099. [2022-01-18 03:14:36,919 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 03:14:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 03:14:36,920 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 03:14:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:36,920 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 03:14:36,920 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 03:14:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 03:14:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:36,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:36,921 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 03:14:36,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-01-18 03:14:36,922 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash 498784478, now seen corresponding path program 201 times [2022-01-18 03:14:36,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:36,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96820165] [2022-01-18 03:14:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:36,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:37,212 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 03:14:37,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:37,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96820165] [2022-01-18 03:14:37,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96820165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:37,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:37,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:14:37,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102497155] [2022-01-18 03:14:37,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:37,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:14:37,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:14:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:14:37,214 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 03:14:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:38,494 INFO L93 Difference]: Finished difference Result 1311 states and 3229 transitions. [2022-01-18 03:14:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:14:38,495 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 03:14:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:38,496 INFO L225 Difference]: With dead ends: 1311 [2022-01-18 03:14:38,496 INFO L226 Difference]: Without dead ends: 1176 [2022-01-18 03:14:38,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2626, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:14:38,497 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 298 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:38,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2781 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:14:38,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2022-01-18 03:14:38,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1075. [2022-01-18 03:14:38,505 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 03:14:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 03:14:38,506 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 03:14:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:38,506 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 03:14:38,506 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 03:14:38,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 03:14:38,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:38,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:38,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:38,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-01-18 03:14:38,508 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:38,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash -869221086, now seen corresponding path program 202 times [2022-01-18 03:14:38,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:38,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495299965] [2022-01-18 03:14:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:38,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:38,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:38,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495299965] [2022-01-18 03:14:38,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495299965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:38,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:38,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:14:38,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407510260] [2022-01-18 03:14:38,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:38,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:14:38,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:14:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:14:38,810 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 03:14:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:39,924 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-01-18 03:14:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:14:39,924 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 03:14:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:39,925 INFO L225 Difference]: With dead ends: 1275 [2022-01-18 03:14:39,925 INFO L226 Difference]: Without dead ends: 1095 [2022-01-18 03:14:39,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:14:39,926 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 273 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:39,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 2566 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:14:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-01-18 03:14:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1051. [2022-01-18 03:14:39,933 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 03:14:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2606 transitions. [2022-01-18 03:14:39,934 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2606 transitions. Word has length 79 [2022-01-18 03:14:39,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:39,935 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2606 transitions. [2022-01-18 03:14:39,935 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 03:14:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2606 transitions. [2022-01-18 03:14:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:39,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:39,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:39,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-01-18 03:14:39,936 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:39,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:39,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1116271034, now seen corresponding path program 203 times [2022-01-18 03:14:39,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:39,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332981873] [2022-01-18 03:14:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:39,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:40,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:40,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332981873] [2022-01-18 03:14:40,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332981873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:40,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:40,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 03:14:40,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253862958] [2022-01-18 03:14:40,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:40,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 03:14:40,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 03:14:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-01-18 03:14:40,255 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 03:14:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:41,087 INFO L93 Difference]: Finished difference Result 1298 states and 3187 transitions. [2022-01-18 03:14:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:14:41,087 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 03:14:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:41,088 INFO L225 Difference]: With dead ends: 1298 [2022-01-18 03:14:41,088 INFO L226 Difference]: Without dead ends: 1079 [2022-01-18 03:14:41,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 03:14:41,089 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 296 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:41,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2157 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:14:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-01-18 03:14:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1047. [2022-01-18 03:14:41,096 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 03:14:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2595 transitions. [2022-01-18 03:14:41,097 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2595 transitions. Word has length 79 [2022-01-18 03:14:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:41,098 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2595 transitions. [2022-01-18 03:14:41,098 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 03:14:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2595 transitions. [2022-01-18 03:14:41,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:41,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:41,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:41,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-01-18 03:14:41,099 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:41,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:41,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1223629364, now seen corresponding path program 204 times [2022-01-18 03:14:41,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:41,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57635111] [2022-01-18 03:14:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:41,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:41,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:41,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57635111] [2022-01-18 03:14:41,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57635111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:41,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:41,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-18 03:14:41,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120718572] [2022-01-18 03:14:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:41,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 03:14:41,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:41,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 03:14:41,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-01-18 03:14:41,394 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 03:14:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:42,196 INFO L93 Difference]: Finished difference Result 1316 states and 3224 transitions. [2022-01-18 03:14:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 03:14:42,196 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 03:14:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:42,197 INFO L225 Difference]: With dead ends: 1316 [2022-01-18 03:14:42,197 INFO L226 Difference]: Without dead ends: 1015 [2022-01-18 03:14:42,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 03:14:42,198 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 299 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 03:14:42,198 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 03:14:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-01-18 03:14:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 999. [2022-01-18 03:14:42,205 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 03:14:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2479 transitions. [2022-01-18 03:14:42,206 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2479 transitions. Word has length 79 [2022-01-18 03:14:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:42,206 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 2479 transitions. [2022-01-18 03:14:42,206 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 03:14:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2479 transitions. [2022-01-18 03:14:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:42,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:42,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:42,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-01-18 03:14:42,208 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash -183029144, now seen corresponding path program 205 times [2022-01-18 03:14:42,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:42,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314722543] [2022-01-18 03:14:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:42,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:42,557 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 03:14:42,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:42,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314722543] [2022-01-18 03:14:42,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314722543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:42,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:42,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:14:42,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546963655] [2022-01-18 03:14:42,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:42,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:14:42,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:14:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:14:42,558 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 03:14:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:44,224 INFO L93 Difference]: Finished difference Result 1353 states and 3382 transitions. [2022-01-18 03:14:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 03:14:44,224 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 03:14:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:44,226 INFO L225 Difference]: With dead ends: 1353 [2022-01-18 03:14:44,226 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 03:14:44,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=296, Invalid=3610, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:14:44,227 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 341 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:44,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3224 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:14:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 03:14:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1087. [2022-01-18 03:14:44,235 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 03:14:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2713 transitions. [2022-01-18 03:14:44,237 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2713 transitions. Word has length 79 [2022-01-18 03:14:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:44,237 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2713 transitions. [2022-01-18 03:14:44,237 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 03:14:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2713 transitions. [2022-01-18 03:14:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:44,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:44,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:44,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-01-18 03:14:44,238 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:44,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1036420310, now seen corresponding path program 206 times [2022-01-18 03:14:44,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:44,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087171062] [2022-01-18 03:14:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:44,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:44,581 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 03:14:44,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:44,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087171062] [2022-01-18 03:14:44,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087171062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:44,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:44,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:14:44,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520174460] [2022-01-18 03:14:44,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:44,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:14:44,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:14:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:14:44,582 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 03:14:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:48,108 INFO L93 Difference]: Finished difference Result 1352 states and 3373 transitions. [2022-01-18 03:14:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 03:14:48,108 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 03:14:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:48,109 INFO L225 Difference]: With dead ends: 1352 [2022-01-18 03:14:48,110 INFO L226 Difference]: Without dead ends: 1254 [2022-01-18 03:14:48,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=3487, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:14:48,110 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 359 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:48,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 3086 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 03:14:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-01-18 03:14:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1091. [2022-01-18 03:14:48,119 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 03:14:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2720 transitions. [2022-01-18 03:14:48,120 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2720 transitions. Word has length 79 [2022-01-18 03:14:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:48,120 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2720 transitions. [2022-01-18 03:14:48,120 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 03:14:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2720 transitions. [2022-01-18 03:14:48,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:48,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:48,121 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 03:14:48,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-01-18 03:14:48,121 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:48,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash -322183032, now seen corresponding path program 207 times [2022-01-18 03:14:48,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:48,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837821828] [2022-01-18 03:14:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:48,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:48,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:48,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837821828] [2022-01-18 03:14:48,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837821828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:48,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:48,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:14:48,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516482911] [2022-01-18 03:14:48,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:48,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:14:48,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:48,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:14:48,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:14:48,490 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 03:14:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:50,117 INFO L93 Difference]: Finished difference Result 1335 states and 3324 transitions. [2022-01-18 03:14:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:14:50,117 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 03:14:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:50,118 INFO L225 Difference]: With dead ends: 1335 [2022-01-18 03:14:50,118 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 03:14:50,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=3487, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:14:50,119 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 343 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:50,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 3255 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:14:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 03:14:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1079. [2022-01-18 03:14:50,126 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 03:14:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2687 transitions. [2022-01-18 03:14:50,128 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2687 transitions. Word has length 79 [2022-01-18 03:14:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:50,128 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2687 transitions. [2022-01-18 03:14:50,128 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 03:14:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2687 transitions. [2022-01-18 03:14:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:50,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:50,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:50,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-01-18 03:14:50,129 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:50,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:50,129 INFO L85 PathProgramCache]: Analyzing trace with hash 3265194, now seen corresponding path program 208 times [2022-01-18 03:14:50,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:50,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729924914] [2022-01-18 03:14:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:50,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:50,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:50,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729924914] [2022-01-18 03:14:50,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729924914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:50,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:50,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:14:50,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917263452] [2022-01-18 03:14:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:50,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:14:50,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:14:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:14:50,489 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 03:14:53,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:14:53,025 INFO L93 Difference]: Finished difference Result 1341 states and 3333 transitions. [2022-01-18 03:14:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:14:53,025 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 03:14:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:14:53,026 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 03:14:53,026 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 03:14:53,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=269, Invalid=3271, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 03:14:53,027 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 321 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:53,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 3122 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 03:14:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 03:14:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1075. [2022-01-18 03:14:53,036 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 03:14:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:14:53,037 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:14:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:14:53,037 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:14:53,037 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 03:14:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:14:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:14:53,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:14:53,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:14:53,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-01-18 03:14:53,038 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:14:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:14:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash 864847528, now seen corresponding path program 209 times [2022-01-18 03:14:53,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:14:53,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711869183] [2022-01-18 03:14:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:14:53,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:14:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:14:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:14:53,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:14:53,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711869183] [2022-01-18 03:14:53,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711869183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:14:53,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:14:53,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:14:53,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893086172] [2022-01-18 03:14:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:14:53,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:14:53,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:14:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:14:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:14:53,358 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 03:14:56,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:14:58,468 WARN L534 Checker$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 03:15:00,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:15:02,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:15:02,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:02,269 INFO L93 Difference]: Finished difference Result 1426 states and 3506 transitions. [2022-01-18 03:15:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:15:02,269 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 03:15:02,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:02,271 INFO L225 Difference]: With dead ends: 1426 [2022-01-18 03:15:02,271 INFO L226 Difference]: Without dead ends: 1328 [2022-01-18 03:15:02,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=284, Invalid=3138, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 03:15:02,271 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 367 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 43 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:02,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 2892 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1139 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2022-01-18 03:15:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2022-01-18 03:15:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1103. [2022-01-18 03:15:02,280 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 03:15:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2741 transitions. [2022-01-18 03:15:02,281 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2741 transitions. Word has length 79 [2022-01-18 03:15:02,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:02,282 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2741 transitions. [2022-01-18 03:15:02,282 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 03:15:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2741 transitions. [2022-01-18 03:15:02,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:02,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:02,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:02,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-01-18 03:15:02,283 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1579084806, now seen corresponding path program 210 times [2022-01-18 03:15:02,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:02,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723662590] [2022-01-18 03:15:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:02,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:02,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:02,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723662590] [2022-01-18 03:15:02,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723662590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:02,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:02,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:02,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812940395] [2022-01-18 03:15:02,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:02,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:02,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:02,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:02,609 INFO L87 Difference]: Start difference. First operand 1103 states and 2741 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 03:15:05,419 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 03:15:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:06,240 INFO L93 Difference]: Finished difference Result 1393 states and 3451 transitions. [2022-01-18 03:15:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:15:06,241 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 03:15:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:06,242 INFO L225 Difference]: With dead ends: 1393 [2022-01-18 03:15:06,242 INFO L226 Difference]: Without dead ends: 1218 [2022-01-18 03:15:06,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:15:06,243 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 349 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:06,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2744 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1094 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 03:15:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-01-18 03:15:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1107. [2022-01-18 03:15:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.481012658227848) internal successors, (2744), 1106 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:15:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2744 transitions. [2022-01-18 03:15:06,252 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2744 transitions. Word has length 79 [2022-01-18 03:15:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:06,252 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2744 transitions. [2022-01-18 03:15:06,253 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 03:15:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2744 transitions. [2022-01-18 03:15:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:06,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:06,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:06,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-01-18 03:15:06,254 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash -360125050, now seen corresponding path program 211 times [2022-01-18 03:15:06,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:06,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40164650] [2022-01-18 03:15:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:06,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:06,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:06,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40164650] [2022-01-18 03:15:06,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40164650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:06,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:06,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:06,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956338877] [2022-01-18 03:15:06,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:06,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:06,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:06,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:06,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:06,579 INFO L87 Difference]: Start difference. First operand 1107 states and 2744 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 03:15:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:08,454 INFO L93 Difference]: Finished difference Result 1386 states and 3434 transitions. [2022-01-18 03:15:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:15:08,454 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 03:15:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:08,456 INFO L225 Difference]: With dead ends: 1386 [2022-01-18 03:15:08,456 INFO L226 Difference]: Without dead ends: 1260 [2022-01-18 03:15:08,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=277, Invalid=3029, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:15:08,457 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 312 mSDsluCounter, 3031 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:08,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 3085 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:15:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-01-18 03:15:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1123. [2022-01-18 03:15:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4919786096256686) internal successors, (2796), 1122 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 03:15:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2796 transitions. [2022-01-18 03:15:08,466 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2796 transitions. Word has length 79 [2022-01-18 03:15:08,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:08,466 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2796 transitions. [2022-01-18 03:15:08,466 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 03:15:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2796 transitions. [2022-01-18 03:15:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:08,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:08,468 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 03:15:08,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-01-18 03:15:08,468 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 158581418, now seen corresponding path program 212 times [2022-01-18 03:15:08,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:08,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943735329] [2022-01-18 03:15:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:08,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:08,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:08,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943735329] [2022-01-18 03:15:08,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943735329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:08,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:08,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:08,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662217478] [2022-01-18 03:15:08,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:08,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:08,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:08,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:08,788 INFO L87 Difference]: Start difference. First operand 1123 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 03:15:10,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:10,347 INFO L93 Difference]: Finished difference Result 1337 states and 3318 transitions. [2022-01-18 03:15:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:15:10,347 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 03:15:10,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:10,349 INFO L225 Difference]: With dead ends: 1337 [2022-01-18 03:15:10,349 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 03:15:10,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=2721, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:15:10,349 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 317 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:10,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 2674 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:15:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 03:15:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1127. [2022-01-18 03:15:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.4893428063943164) internal successors, (2803), 1126 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:15:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2803 transitions. [2022-01-18 03:15:10,359 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2803 transitions. Word has length 79 [2022-01-18 03:15:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:10,359 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2803 transitions. [2022-01-18 03:15:10,360 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 03:15:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2803 transitions. [2022-01-18 03:15:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:10,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:10,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:10,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-01-18 03:15:10,361 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:10,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -208313012, now seen corresponding path program 213 times [2022-01-18 03:15:10,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:10,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950371865] [2022-01-18 03:15:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:10,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:10,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:10,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950371865] [2022-01-18 03:15:10,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950371865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:10,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:10,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:10,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037281346] [2022-01-18 03:15:10,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:10,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:10,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:10,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:10,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:10,691 INFO L87 Difference]: Start difference. First operand 1127 states and 2803 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 03:15:13,485 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 03:15:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:14,056 INFO L93 Difference]: Finished difference Result 1384 states and 3433 transitions. [2022-01-18 03:15:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:15:14,056 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 03:15:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:14,058 INFO L225 Difference]: With dead ends: 1384 [2022-01-18 03:15:14,058 INFO L226 Difference]: Without dead ends: 1286 [2022-01-18 03:15:14,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=2822, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:15:14,058 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 314 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:14,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2763 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1083 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 03:15:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-01-18 03:15:14,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1155. [2022-01-18 03:15:14,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.488734835355286) internal successors, (2872), 1154 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:15:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2872 transitions. [2022-01-18 03:15:14,068 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2872 transitions. Word has length 79 [2022-01-18 03:15:14,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:14,069 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2872 transitions. [2022-01-18 03:15:14,069 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 03:15:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2872 transitions. [2022-01-18 03:15:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:14,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:14,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:14,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-01-18 03:15:14,070 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:14,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash 505924266, now seen corresponding path program 214 times [2022-01-18 03:15:14,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:14,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942956770] [2022-01-18 03:15:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:14,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:14,438 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 03:15:14,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:14,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942956770] [2022-01-18 03:15:14,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942956770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:14,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:14,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:14,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360797779] [2022-01-18 03:15:14,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:14,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:14,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:14,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:14,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:14,440 INFO L87 Difference]: Start difference. First operand 1155 states and 2872 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 03:15:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:16,794 INFO L93 Difference]: Finished difference Result 1367 states and 3388 transitions. [2022-01-18 03:15:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:15:16,794 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 03:15:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:16,796 INFO L225 Difference]: With dead ends: 1367 [2022-01-18 03:15:16,796 INFO L226 Difference]: Without dead ends: 1258 [2022-01-18 03:15:16,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:15:16,797 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 356 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:16,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2583 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 03:15:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-01-18 03:15:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1143. [2022-01-18 03:15:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.489492119089317) internal successors, (2843), 1142 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 03:15:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2843 transitions. [2022-01-18 03:15:16,813 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2843 transitions. Word has length 79 [2022-01-18 03:15:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:16,813 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2843 transitions. [2022-01-18 03:15:16,813 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 03:15:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2843 transitions. [2022-01-18 03:15:16,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:16,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:16,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:16,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-01-18 03:15:16,815 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:16,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:16,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2001819324, now seen corresponding path program 215 times [2022-01-18 03:15:16,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:16,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755687158] [2022-01-18 03:15:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:16,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:17,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:17,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755687158] [2022-01-18 03:15:17,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755687158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:17,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:17,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:17,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716950403] [2022-01-18 03:15:17,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:17,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:17,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:17,122 INFO L87 Difference]: Start difference. First operand 1143 states and 2843 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 03:15:19,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:15:21,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:15:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:22,161 INFO L93 Difference]: Finished difference Result 1334 states and 3299 transitions. [2022-01-18 03:15:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:15:22,162 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 03:15:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:22,163 INFO L225 Difference]: With dead ends: 1334 [2022-01-18 03:15:22,163 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 03:15:22,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=266, Invalid=2926, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:15:22,164 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 358 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:22,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2936 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1131 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-01-18 03:15:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 03:15:22,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1103. [2022-01-18 03:15:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.480036297640653) internal successors, (2733), 1102 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:15:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2733 transitions. [2022-01-18 03:15:22,174 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2733 transitions. Word has length 79 [2022-01-18 03:15:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:22,174 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2733 transitions. [2022-01-18 03:15:22,174 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 03:15:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2733 transitions. [2022-01-18 03:15:22,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:22,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:22,175 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 03:15:22,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-01-18 03:15:22,175 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1810498950, now seen corresponding path program 216 times [2022-01-18 03:15:22,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:22,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261730118] [2022-01-18 03:15:22,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:22,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:22,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:22,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261730118] [2022-01-18 03:15:22,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261730118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:22,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:22,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:15:22,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551309959] [2022-01-18 03:15:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:22,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:15:22,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:15:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:15:22,520 INFO L87 Difference]: Start difference. First operand 1103 states and 2733 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 03:15:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:24,240 INFO L93 Difference]: Finished difference Result 1401 states and 3465 transitions. [2022-01-18 03:15:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:15:24,240 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 03:15:24,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:24,242 INFO L225 Difference]: With dead ends: 1401 [2022-01-18 03:15:24,242 INFO L226 Difference]: Without dead ends: 1303 [2022-01-18 03:15:24,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=299, Invalid=3607, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:15:24,242 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 347 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:24,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 3037 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:15:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-01-18 03:15:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1131. [2022-01-18 03:15:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.479646017699115) internal successors, (2802), 1130 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:15:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2802 transitions. [2022-01-18 03:15:24,252 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2802 transitions. Word has length 79 [2022-01-18 03:15:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:24,252 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2802 transitions. [2022-01-18 03:15:24,252 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 03:15:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2802 transitions. [2022-01-18 03:15:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:24,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:24,253 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 03:15:24,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-01-18 03:15:24,253 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:24,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:24,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1167935454, now seen corresponding path program 217 times [2022-01-18 03:15:24,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:24,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368532987] [2022-01-18 03:15:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:24,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:24,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:24,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368532987] [2022-01-18 03:15:24,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368532987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:24,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:24,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:15:24,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027818997] [2022-01-18 03:15:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:24,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:15:24,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:15:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:15:24,593 INFO L87 Difference]: Start difference. First operand 1131 states and 2802 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 03:15:26,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:26,661 INFO L93 Difference]: Finished difference Result 1357 states and 3348 transitions. [2022-01-18 03:15:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 03:15:26,661 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 03:15:26,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:26,663 INFO L225 Difference]: With dead ends: 1357 [2022-01-18 03:15:26,663 INFO L226 Difference]: Without dead ends: 1222 [2022-01-18 03:15:26,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=291, Invalid=3491, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:15:26,663 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 330 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:26,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 3298 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:15:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-18 03:15:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1107. [2022-01-18 03:15:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 2.477396021699819) internal successors, (2740), 1106 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:15:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 2740 transitions. [2022-01-18 03:15:26,673 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 2740 transitions. Word has length 79 [2022-01-18 03:15:26,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:26,673 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 2740 transitions. [2022-01-18 03:15:26,674 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 03:15:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2740 transitions. [2022-01-18 03:15:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:26,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:26,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:26,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-01-18 03:15:26,675 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1996516812, now seen corresponding path program 218 times [2022-01-18 03:15:26,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:26,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447904302] [2022-01-18 03:15:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:26,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:27,001 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 03:15:27,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447904302] [2022-01-18 03:15:27,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447904302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:27,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:27,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:27,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727350928] [2022-01-18 03:15:27,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:27,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:27,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:27,003 INFO L87 Difference]: Start difference. First operand 1107 states and 2740 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 03:15:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:28,371 INFO L93 Difference]: Finished difference Result 1345 states and 3315 transitions. [2022-01-18 03:15:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:15:28,371 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 03:15:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:28,372 INFO L225 Difference]: With dead ends: 1345 [2022-01-18 03:15:28,372 INFO L226 Difference]: Without dead ends: 1171 [2022-01-18 03:15:28,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:15:28,373 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 328 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:28,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2870 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:15:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-01-18 03:15:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1091. [2022-01-18 03:15:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.473394495412844) internal successors, (2696), 1090 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 03:15:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2696 transitions. [2022-01-18 03:15:28,382 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2696 transitions. Word has length 79 [2022-01-18 03:15:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:28,382 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2696 transitions. [2022-01-18 03:15:28,382 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 03:15:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2696 transitions. [2022-01-18 03:15:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:28,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:28,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:28,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-01-18 03:15:28,383 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1856760466, now seen corresponding path program 219 times [2022-01-18 03:15:28,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:28,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423534394] [2022-01-18 03:15:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:28,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:28,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:28,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423534394] [2022-01-18 03:15:28,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423534394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:28,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:28,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:28,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22725512] [2022-01-18 03:15:28,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:28,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:28,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:28,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:28,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:28,703 INFO L87 Difference]: Start difference. First operand 1091 states and 2696 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 03:15:32,296 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 03:15:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:32,440 INFO L93 Difference]: Finished difference Result 1395 states and 3432 transitions. [2022-01-18 03:15:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:15:32,441 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 03:15:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:32,442 INFO L225 Difference]: With dead ends: 1395 [2022-01-18 03:15:32,442 INFO L226 Difference]: Without dead ends: 1297 [2022-01-18 03:15:32,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:15:32,443 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 319 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:32,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 2934 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1146 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 03:15:32,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-01-18 03:15:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1115. [2022-01-18 03:15:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.4757630161579893) internal successors, (2758), 1114 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:15:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2758 transitions. [2022-01-18 03:15:32,453 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2758 transitions. Word has length 79 [2022-01-18 03:15:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:32,453 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2758 transitions. [2022-01-18 03:15:32,453 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 03:15:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2758 transitions. [2022-01-18 03:15:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:32,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:32,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:32,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-01-18 03:15:32,454 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1142523188, now seen corresponding path program 220 times [2022-01-18 03:15:32,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:32,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297083291] [2022-01-18 03:15:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:32,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:32,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:32,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297083291] [2022-01-18 03:15:32,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297083291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:32,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:32,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:32,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127222145] [2022-01-18 03:15:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:32,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:32,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:32,784 INFO L87 Difference]: Start difference. First operand 1115 states and 2758 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 03:15:37,498 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 03:15:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:37,721 INFO L93 Difference]: Finished difference Result 1363 states and 3348 transitions. [2022-01-18 03:15:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:15:37,722 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 03:15:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:37,723 INFO L225 Difference]: With dead ends: 1363 [2022-01-18 03:15:37,723 INFO L226 Difference]: Without dead ends: 1212 [2022-01-18 03:15:37,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=260, Invalid=2932, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:15:37,724 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 353 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:37,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 2768 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1072 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-01-18 03:15:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-01-18 03:15:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1115. [2022-01-18 03:15:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.472172351885099) internal successors, (2754), 1114 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 03:15:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2754 transitions. [2022-01-18 03:15:37,734 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2754 transitions. Word has length 79 [2022-01-18 03:15:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:37,734 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2754 transitions. [2022-01-18 03:15:37,735 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 03:15:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2754 transitions. [2022-01-18 03:15:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:37,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:37,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:37,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-01-18 03:15:37,736 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1908233138, now seen corresponding path program 221 times [2022-01-18 03:15:37,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:37,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874900892] [2022-01-18 03:15:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:37,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:38,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:38,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874900892] [2022-01-18 03:15:38,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874900892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:38,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:38,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:15:38,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007056624] [2022-01-18 03:15:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:38,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:15:38,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:15:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:15:38,030 INFO L87 Difference]: Start difference. First operand 1115 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 03:15:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:39,273 INFO L93 Difference]: Finished difference Result 1323 states and 3238 transitions. [2022-01-18 03:15:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:15:39,273 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 03:15:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:39,274 INFO L225 Difference]: With dead ends: 1323 [2022-01-18 03:15:39,274 INFO L226 Difference]: Without dead ends: 1119 [2022-01-18 03:15:39,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:15:39,275 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 289 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:39,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2943 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:15:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-01-18 03:15:39,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1067. [2022-01-18 03:15:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4671669793621014) internal successors, (2630), 1066 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:15:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2630 transitions. [2022-01-18 03:15:39,284 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2630 transitions. Word has length 79 [2022-01-18 03:15:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:39,285 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2630 transitions. [2022-01-18 03:15:39,285 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 03:15:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2630 transitions. [2022-01-18 03:15:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:39,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:39,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:39,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-01-18 03:15:39,286 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:39,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:39,286 INFO L85 PathProgramCache]: Analyzing trace with hash 506829364, now seen corresponding path program 222 times [2022-01-18 03:15:39,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:39,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236990867] [2022-01-18 03:15:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:39,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:39,606 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 03:15:39,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:39,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236990867] [2022-01-18 03:15:39,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236990867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:39,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:39,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:15:39,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615285809] [2022-01-18 03:15:39,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:39,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:15:39,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:39,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:15:39,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:15:39,607 INFO L87 Difference]: Start difference. First operand 1067 states and 2630 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 03:15:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:40,840 INFO L93 Difference]: Finished difference Result 1312 states and 3235 transitions. [2022-01-18 03:15:40,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:15:40,840 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 03:15:40,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:40,842 INFO L225 Difference]: With dead ends: 1312 [2022-01-18 03:15:40,842 INFO L226 Difference]: Without dead ends: 1174 [2022-01-18 03:15:40,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=2327, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:15:40,843 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 269 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:40,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2750 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:15:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-01-18 03:15:40,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1067. [2022-01-18 03:15:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4896810506566602) internal successors, (2654), 1066 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 03:15:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2654 transitions. [2022-01-18 03:15:40,852 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2654 transitions. Word has length 79 [2022-01-18 03:15:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:40,852 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2654 transitions. [2022-01-18 03:15:40,852 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 03:15:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2654 transitions. [2022-01-18 03:15:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:40,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:40,854 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 03:15:40,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-01-18 03:15:40,854 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:40,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1023336312, now seen corresponding path program 223 times [2022-01-18 03:15:40,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:40,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873917565] [2022-01-18 03:15:40,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:40,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:41,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:41,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873917565] [2022-01-18 03:15:41,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873917565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:41,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:41,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:15:41,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184200672] [2022-01-18 03:15:41,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:41,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:15:41,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:41,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:15:41,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:15:41,170 INFO L87 Difference]: Start difference. First operand 1067 states and 2654 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 03:15:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:42,278 INFO L93 Difference]: Finished difference Result 1253 states and 3099 transitions. [2022-01-18 03:15:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:15:42,278 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 03:15:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:42,280 INFO L225 Difference]: With dead ends: 1253 [2022-01-18 03:15:42,280 INFO L226 Difference]: Without dead ends: 1139 [2022-01-18 03:15:42,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:15:42,280 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 283 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:42,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2398 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:15:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-18 03:15:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1067. [2022-01-18 03:15:42,289 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 03:15:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2650 transitions. [2022-01-18 03:15:42,290 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2650 transitions. Word has length 79 [2022-01-18 03:15:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:42,290 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2650 transitions. [2022-01-18 03:15:42,290 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 03:15:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2650 transitions. [2022-01-18 03:15:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:42,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:42,291 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 03:15:42,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-01-18 03:15:42,291 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:42,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash -675993464, now seen corresponding path program 224 times [2022-01-18 03:15:42,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:42,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128703147] [2022-01-18 03:15:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:42,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:42,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:42,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128703147] [2022-01-18 03:15:42,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128703147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:42,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:42,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:15:42,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794387525] [2022-01-18 03:15:42,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:42,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:15:42,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:15:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:15:42,615 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 03:15:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:43,779 INFO L93 Difference]: Finished difference Result 1228 states and 3032 transitions. [2022-01-18 03:15:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:15:43,779 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 03:15:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:43,780 INFO L225 Difference]: With dead ends: 1228 [2022-01-18 03:15:43,780 INFO L226 Difference]: Without dead ends: 1119 [2022-01-18 03:15:43,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:15:43,781 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 272 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:43,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2634 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:15:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-01-18 03:15:43,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1059. [2022-01-18 03:15:43,789 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 03:15:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 03:15:43,790 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 03:15:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:43,790 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 03:15:43,790 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 03:15:43,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 03:15:43,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:43,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:43,791 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 03:15:43,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-01-18 03:15:43,792 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:43,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:43,792 INFO L85 PathProgramCache]: Analyzing trace with hash -205302650, now seen corresponding path program 225 times [2022-01-18 03:15:43,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:43,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315346923] [2022-01-18 03:15:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:43,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:44,112 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 03:15:44,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:44,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315346923] [2022-01-18 03:15:44,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315346923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:44,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:44,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:15:44,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572055146] [2022-01-18 03:15:44,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:44,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:15:44,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:44,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:15:44,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:15:44,113 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 03:15:46,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:15:46,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:46,921 INFO L93 Difference]: Finished difference Result 1282 states and 3168 transitions. [2022-01-18 03:15:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:15:46,922 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 03:15:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:46,923 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 03:15:46,923 INFO L226 Difference]: Without dead ends: 1184 [2022-01-18 03:15:46,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=221, Invalid=2229, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:15:46,924 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 280 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:46,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2544 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 03:15:46,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-18 03:15:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1083. [2022-01-18 03:15:46,932 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 03:15:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2690 transitions. [2022-01-18 03:15:46,933 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2690 transitions. Word has length 79 [2022-01-18 03:15:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:46,933 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2690 transitions. [2022-01-18 03:15:46,933 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 03:15:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2690 transitions. [2022-01-18 03:15:46,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:46,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:46,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:46,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-01-18 03:15:46,935 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:46,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1111230242, now seen corresponding path program 226 times [2022-01-18 03:15:46,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:46,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113826462] [2022-01-18 03:15:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:46,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:47,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:47,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113826462] [2022-01-18 03:15:47,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113826462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:47,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:47,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:15:47,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688018590] [2022-01-18 03:15:47,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:47,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:15:47,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:47,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:15:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:15:47,248 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 03:15:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:48,426 INFO L93 Difference]: Finished difference Result 1250 states and 3080 transitions. [2022-01-18 03:15:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:15:48,427 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 03:15:48,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:48,428 INFO L225 Difference]: With dead ends: 1250 [2022-01-18 03:15:48,428 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 03:15:48,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:15:48,429 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 261 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:48,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2626 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:15:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 03:15:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1051. [2022-01-18 03:15:48,436 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 03:15:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 03:15:48,437 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 03:15:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:48,437 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 03:15:48,437 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 03:15:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 03:15:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:48,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:48,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:48,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-01-18 03:15:48,439 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash 628581220, now seen corresponding path program 227 times [2022-01-18 03:15:48,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:48,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160866584] [2022-01-18 03:15:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:48,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:48,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:48,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160866584] [2022-01-18 03:15:48,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160866584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:48,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:48,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:48,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332872250] [2022-01-18 03:15:48,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:48,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:48,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:48,762 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 03:15:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:50,176 INFO L93 Difference]: Finished difference Result 1325 states and 3276 transitions. [2022-01-18 03:15:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:15:50,176 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 03:15:50,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:50,178 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 03:15:50,178 INFO L226 Difference]: Without dead ends: 1227 [2022-01-18 03:15:50,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=2828, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:15:50,178 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 295 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:50,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2805 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:15:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-01-18 03:15:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1079. [2022-01-18 03:15:50,187 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 03:15:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2679 transitions. [2022-01-18 03:15:50,189 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2679 transitions. Word has length 79 [2022-01-18 03:15:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:50,189 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2679 transitions. [2022-01-18 03:15:50,189 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 03:15:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2679 transitions. [2022-01-18 03:15:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:50,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:50,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:50,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-01-18 03:15:50,190 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:50,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1945114112, now seen corresponding path program 228 times [2022-01-18 03:15:50,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:50,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98613578] [2022-01-18 03:15:50,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:50,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:50,505 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 03:15:50,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:50,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98613578] [2022-01-18 03:15:50,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98613578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:50,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:50,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:50,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466596278] [2022-01-18 03:15:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:50,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:50,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:50,506 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 03:15:51,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:51,833 INFO L93 Difference]: Finished difference Result 1281 states and 3159 transitions. [2022-01-18 03:15:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:15:51,834 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 03:15:51,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:51,835 INFO L225 Difference]: With dead ends: 1281 [2022-01-18 03:15:51,835 INFO L226 Difference]: Without dead ends: 1146 [2022-01-18 03:15:51,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:15:51,836 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 297 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:51,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 3071 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:15:51,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-01-18 03:15:51,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1055. [2022-01-18 03:15:51,844 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 03:15:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 2617 transitions. [2022-01-18 03:15:51,845 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 2617 transitions. Word has length 79 [2022-01-18 03:15:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:51,845 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 2617 transitions. [2022-01-18 03:15:51,845 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 03:15:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 2617 transitions. [2022-01-18 03:15:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:51,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:51,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:51,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-01-18 03:15:51,846 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash 814599082, now seen corresponding path program 229 times [2022-01-18 03:15:51,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:51,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039991847] [2022-01-18 03:15:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:51,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:52,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:52,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039991847] [2022-01-18 03:15:52,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039991847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:52,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:52,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:15:52,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418148753] [2022-01-18 03:15:52,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:52,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:15:52,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:15:52,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:15:52,154 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 03:15:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:53,243 INFO L93 Difference]: Finished difference Result 1269 states and 3126 transitions. [2022-01-18 03:15:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:15:53,243 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 03:15:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:53,245 INFO L225 Difference]: With dead ends: 1269 [2022-01-18 03:15:53,245 INFO L226 Difference]: Without dead ends: 1103 [2022-01-18 03:15:53,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:15:53,245 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 304 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:53,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2601 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:15:53,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-01-18 03:15:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1047. [2022-01-18 03:15:53,259 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 03:15:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2599 transitions. [2022-01-18 03:15:53,260 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2599 transitions. Word has length 79 [2022-01-18 03:15:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:53,260 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2599 transitions. [2022-01-18 03:15:53,260 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 03:15:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2599 transitions. [2022-01-18 03:15:53,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:53,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:53,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:15:53,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-01-18 03:15:53,261 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:53,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1018020498, now seen corresponding path program 230 times [2022-01-18 03:15:53,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:53,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623284045] [2022-01-18 03:15:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:53,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:15:53,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:53,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623284045] [2022-01-18 03:15:53,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623284045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:53,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:53,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:53,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92371016] [2022-01-18 03:15:53,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:53,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:53,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:53,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:53,606 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 03:15:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:15:55,374 INFO L93 Difference]: Finished difference Result 1327 states and 3273 transitions. [2022-01-18 03:15:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:15:55,375 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 03:15:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:15:55,376 INFO L225 Difference]: With dead ends: 1327 [2022-01-18 03:15:55,376 INFO L226 Difference]: Without dead ends: 1229 [2022-01-18 03:15:55,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:15:55,377 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 320 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:15:55,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2732 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:15:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-01-18 03:15:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1095. [2022-01-18 03:15:55,385 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 03:15:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2723 transitions. [2022-01-18 03:15:55,386 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2723 transitions. Word has length 79 [2022-01-18 03:15:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:15:55,387 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2723 transitions. [2022-01-18 03:15:55,387 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 03:15:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2723 transitions. [2022-01-18 03:15:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:15:55,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:15:55,388 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 03:15:55,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-01-18 03:15:55,388 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:15:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:15:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash 298512394, now seen corresponding path program 231 times [2022-01-18 03:15:55,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:15:55,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839692433] [2022-01-18 03:15:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:15:55,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:15:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:15:55,690 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 03:15:55,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:15:55,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839692433] [2022-01-18 03:15:55,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839692433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:15:55,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:15:55,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:15:55,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202062544] [2022-01-18 03:15:55,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:15:55,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:15:55,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:15:55,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:15:55,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:15:55,692 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 03:15:58,554 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 03:16:00,802 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 03:16:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:01,212 INFO L93 Difference]: Finished difference Result 1295 states and 3185 transitions. [2022-01-18 03:16:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:16:01,213 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 03:16:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:01,214 INFO L225 Difference]: With dead ends: 1295 [2022-01-18 03:16:01,214 INFO L226 Difference]: Without dead ends: 1160 [2022-01-18 03:16:01,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=227, Invalid=2635, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:16:01,214 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 321 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 36 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:01,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2699 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1036 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-01-18 03:16:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-01-18 03:16:01,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1071. [2022-01-18 03:16:01,222 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 03:16:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2657 transitions. [2022-01-18 03:16:01,223 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2657 transitions. Word has length 79 [2022-01-18 03:16:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:01,223 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2657 transitions. [2022-01-18 03:16:01,223 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 03:16:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2657 transitions. [2022-01-18 03:16:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:01,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:01,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:01,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-01-18 03:16:01,225 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:01,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:01,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1069493170, now seen corresponding path program 232 times [2022-01-18 03:16:01,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:01,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187814850] [2022-01-18 03:16:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:01,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:01,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:01,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187814850] [2022-01-18 03:16:01,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187814850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:01,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:01,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:01,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616463027] [2022-01-18 03:16:01,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:01,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:01,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:01,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:01,528 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 03:16:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:02,626 INFO L93 Difference]: Finished difference Result 1271 states and 3119 transitions. [2022-01-18 03:16:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:16:02,627 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 03:16:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:02,628 INFO L225 Difference]: With dead ends: 1271 [2022-01-18 03:16:02,628 INFO L226 Difference]: Without dead ends: 1083 [2022-01-18 03:16:02,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:16:02,628 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 289 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:02,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 2624 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:02,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-01-18 03:16:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-01-18 03:16:02,636 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 03:16:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2577 transitions. [2022-01-18 03:16:02,637 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2577 transitions. Word has length 79 [2022-01-18 03:16:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:02,637 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2577 transitions. [2022-01-18 03:16:02,637 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 03:16:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2577 transitions. [2022-01-18 03:16:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:02,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:02,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:02,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-01-18 03:16:02,639 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:02,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1680026352, now seen corresponding path program 233 times [2022-01-18 03:16:02,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:02,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744354608] [2022-01-18 03:16:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:02,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:02,974 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 03:16:02,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:02,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744354608] [2022-01-18 03:16:02,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744354608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:02,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:02,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:16:02,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946943633] [2022-01-18 03:16:02,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:02,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:16:02,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:02,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:16:02,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:16:02,975 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 03:16:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:04,664 INFO L93 Difference]: Finished difference Result 1367 states and 3379 transitions. [2022-01-18 03:16:04,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:16:04,665 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 03:16:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:04,666 INFO L225 Difference]: With dead ends: 1367 [2022-01-18 03:16:04,666 INFO L226 Difference]: Without dead ends: 1269 [2022-01-18 03:16:04,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:16:04,667 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 341 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:04,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3051 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:16:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-01-18 03:16:04,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1091. [2022-01-18 03:16:04,675 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 03:16:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2712 transitions. [2022-01-18 03:16:04,676 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2712 transitions. Word has length 79 [2022-01-18 03:16:04,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:04,676 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2712 transitions. [2022-01-18 03:16:04,676 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 03:16:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2712 transitions. [2022-01-18 03:16:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:04,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:04,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:04,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-01-18 03:16:04,677 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:04,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:04,678 INFO L85 PathProgramCache]: Analyzing trace with hash -363493460, now seen corresponding path program 234 times [2022-01-18 03:16:04,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:04,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275784024] [2022-01-18 03:16:04,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:04,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:04,994 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 03:16:04,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:04,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275784024] [2022-01-18 03:16:04,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275784024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:04,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:04,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:16:04,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711598654] [2022-01-18 03:16:04,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:04,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:16:04,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:16:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:16:04,995 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 03:16:08,017 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 03:16:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:09,217 INFO L93 Difference]: Finished difference Result 1323 states and 3262 transitions. [2022-01-18 03:16:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 03:16:09,217 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 03:16:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:09,219 INFO L225 Difference]: With dead ends: 1323 [2022-01-18 03:16:09,219 INFO L226 Difference]: Without dead ends: 1188 [2022-01-18 03:16:09,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=272, Invalid=3388, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 03:16:09,219 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 341 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:09,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3170 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1209 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-01-18 03:16:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-01-18 03:16:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1067. [2022-01-18 03:16:09,228 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 03:16:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2646 transitions. [2022-01-18 03:16:09,229 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2646 transitions. Word has length 79 [2022-01-18 03:16:09,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:09,229 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2646 transitions. [2022-01-18 03:16:09,229 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 03:16:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2646 transitions. [2022-01-18 03:16:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:09,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:09,230 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 03:16:09,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-01-18 03:16:09,230 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:09,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1731499024, now seen corresponding path program 235 times [2022-01-18 03:16:09,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:09,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946497830] [2022-01-18 03:16:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:09,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:09,536 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 03:16:09,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:09,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946497830] [2022-01-18 03:16:09,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946497830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:09,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:09,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:16:09,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590624380] [2022-01-18 03:16:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:09,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:16:09,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:09,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:16:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:16:09,538 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 03:16:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:10,792 INFO L93 Difference]: Finished difference Result 1287 states and 3163 transitions. [2022-01-18 03:16:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:16:10,793 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 03:16:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:10,794 INFO L225 Difference]: With dead ends: 1287 [2022-01-18 03:16:10,794 INFO L226 Difference]: Without dead ends: 1107 [2022-01-18 03:16:10,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=2634, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:16:10,795 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 316 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:10,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2813 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:16:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-18 03:16:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1043. [2022-01-18 03:16:10,802 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 03:16:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 2584 transitions. [2022-01-18 03:16:10,803 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 2584 transitions. Word has length 79 [2022-01-18 03:16:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:10,804 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 2584 transitions. [2022-01-18 03:16:10,804 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 03:16:10,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 2584 transitions. [2022-01-18 03:16:10,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:10,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:10,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:10,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-01-18 03:16:10,805 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:10,805 INFO L85 PathProgramCache]: Analyzing trace with hash 253993096, now seen corresponding path program 236 times [2022-01-18 03:16:10,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:10,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951656892] [2022-01-18 03:16:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:10,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:11,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:11,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951656892] [2022-01-18 03:16:11,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951656892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:11,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:11,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:11,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663304840] [2022-01-18 03:16:11,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:11,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:11,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:11,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:11,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:11,121 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 03:16:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:12,227 INFO L93 Difference]: Finished difference Result 1302 states and 3198 transitions. [2022-01-18 03:16:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:16:12,227 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 03:16:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:12,228 INFO L225 Difference]: With dead ends: 1302 [2022-01-18 03:16:12,228 INFO L226 Difference]: Without dead ends: 1071 [2022-01-18 03:16:12,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:16:12,229 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 292 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:12,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2881 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-01-18 03:16:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1027. [2022-01-18 03:16:12,236 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 03:16:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-01-18 03:16:12,237 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-01-18 03:16:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:12,237 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-01-18 03:16:12,238 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 03:16:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-01-18 03:16:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:12,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:12,239 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 03:16:12,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-01-18 03:16:12,239 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1441862078, now seen corresponding path program 237 times [2022-01-18 03:16:12,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:12,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860647410] [2022-01-18 03:16:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:12,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:12,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:12,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860647410] [2022-01-18 03:16:12,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860647410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:12,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:12,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:16:12,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339738313] [2022-01-18 03:16:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:12,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:16:12,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:16:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:16:12,568 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 03:16:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:14,880 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-01-18 03:16:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:16:14,880 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 03:16:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:14,882 INFO L225 Difference]: With dead ends: 1343 [2022-01-18 03:16:14,882 INFO L226 Difference]: Without dead ends: 1245 [2022-01-18 03:16:14,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=260, Invalid=3046, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:16:14,882 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 339 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:14,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2802 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 03:16:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-18 03:16:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1087. [2022-01-18 03:16:14,891 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 03:16:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:16:14,892 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:16:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:14,892 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:16:14,892 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 03:16:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:16:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:14,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:14,893 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 03:16:14,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-01-18 03:16:14,893 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash -125329186, now seen corresponding path program 238 times [2022-01-18 03:16:14,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:14,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763863878] [2022-01-18 03:16:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:14,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:15,203 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 03:16:15,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:15,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763863878] [2022-01-18 03:16:15,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763863878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:15,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:15,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:16:15,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27972772] [2022-01-18 03:16:15,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:15,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:16:15,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:16:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:16:15,204 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 03:16:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:17,538 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-01-18 03:16:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:16:17,539 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 03:16:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:17,540 INFO L225 Difference]: With dead ends: 1299 [2022-01-18 03:16:17,540 INFO L226 Difference]: Without dead ends: 1164 [2022-01-18 03:16:17,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=2940, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:16:17,541 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 309 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:17,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 2916 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 03:16:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-18 03:16:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-01-18 03:16:17,549 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 03:16:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-01-18 03:16:17,550 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-01-18 03:16:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:17,550 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-01-18 03:16:17,550 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 03:16:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-01-18 03:16:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:17,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:17,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:17,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-01-18 03:16:17,552 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1493334750, now seen corresponding path program 239 times [2022-01-18 03:16:17,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:17,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215962596] [2022-01-18 03:16:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:17,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:17,865 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 03:16:17,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:17,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215962596] [2022-01-18 03:16:17,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215962596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:17,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:17,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:17,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578656632] [2022-01-18 03:16:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:17,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:17,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:17,866 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 03:16:19,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:19,029 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-01-18 03:16:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:16:19,029 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 03:16:19,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:19,030 INFO L225 Difference]: With dead ends: 1263 [2022-01-18 03:16:19,030 INFO L226 Difference]: Without dead ends: 1083 [2022-01-18 03:16:19,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=205, Invalid=2245, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:16:19,031 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 284 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:19,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2702 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:16:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-01-18 03:16:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-01-18 03:16:19,038 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 03:16:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-01-18 03:16:19,039 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-01-18 03:16:19,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:19,039 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-01-18 03:16:19,039 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 03:16:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-01-18 03:16:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:19,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:19,040 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 03:16:19,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-01-18 03:16:19,041 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:19,041 INFO L85 PathProgramCache]: Analyzing trace with hash 492157370, now seen corresponding path program 240 times [2022-01-18 03:16:19,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:19,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835467602] [2022-01-18 03:16:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:19,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:19,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:19,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835467602] [2022-01-18 03:16:19,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835467602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:19,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:19,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:19,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122711261] [2022-01-18 03:16:19,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:19,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:19,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:19,339 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 03:16:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:20,305 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-01-18 03:16:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 03:16:20,305 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 03:16:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:20,307 INFO L225 Difference]: With dead ends: 1286 [2022-01-18 03:16:20,307 INFO L226 Difference]: Without dead ends: 1067 [2022-01-18 03:16:20,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=1719, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:16:20,307 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 283 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:20,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2573 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:20,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-01-18 03:16:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-01-18 03:16:20,315 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 03:16:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-01-18 03:16:20,316 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-01-18 03:16:20,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:20,316 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-01-18 03:16:20,317 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 03:16:20,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-01-18 03:16:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:20,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:20,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:20,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-01-18 03:16:20,318 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:20,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1847743028, now seen corresponding path program 241 times [2022-01-18 03:16:20,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:20,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032940708] [2022-01-18 03:16:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:20,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:20,623 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 03:16:20,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:20,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032940708] [2022-01-18 03:16:20,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032940708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:20,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:20,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:20,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279998567] [2022-01-18 03:16:20,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:20,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:20,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:20,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:20,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:20,624 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 03:16:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:21,554 INFO L93 Difference]: Finished difference Result 1312 states and 3213 transitions. [2022-01-18 03:16:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 03:16:21,555 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 03:16:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:21,556 INFO L225 Difference]: With dead ends: 1312 [2022-01-18 03:16:21,556 INFO L226 Difference]: Without dead ends: 1027 [2022-01-18 03:16:21,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:16:21,556 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 316 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:21,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2541 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-01-18 03:16:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1003. [2022-01-18 03:16:21,563 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 03:16:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 2486 transitions. [2022-01-18 03:16:21,565 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 2486 transitions. Word has length 79 [2022-01-18 03:16:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:21,565 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 2486 transitions. [2022-01-18 03:16:21,565 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 03:16:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2486 transitions. [2022-01-18 03:16:21,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:21,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:21,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:21,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-01-18 03:16:21,566 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash -566943232, now seen corresponding path program 242 times [2022-01-18 03:16:21,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:21,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070750657] [2022-01-18 03:16:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:21,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:21,867 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 03:16:21,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:21,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070750657] [2022-01-18 03:16:21,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070750657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:21,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:21,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:21,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819664279] [2022-01-18 03:16:21,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:21,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:21,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:21,868 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 03:16:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:22,743 INFO L93 Difference]: Finished difference Result 1269 states and 3147 transitions. [2022-01-18 03:16:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:16:22,743 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 03:16:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:22,745 INFO L225 Difference]: With dead ends: 1269 [2022-01-18 03:16:22,745 INFO L226 Difference]: Without dead ends: 1139 [2022-01-18 03:16:22,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 03:16:22,745 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 243 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:22,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 2230 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-01-18 03:16:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1083. [2022-01-18 03:16:22,754 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 03:16:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2698 transitions. [2022-01-18 03:16:22,755 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2698 transitions. Word has length 79 [2022-01-18 03:16:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:22,755 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2698 transitions. [2022-01-18 03:16:22,755 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 03:16:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2698 transitions. [2022-01-18 03:16:22,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:22,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:22,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:22,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-01-18 03:16:22,756 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:22,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1420334398, now seen corresponding path program 243 times [2022-01-18 03:16:22,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:22,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336346664] [2022-01-18 03:16:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:22,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:23,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336346664] [2022-01-18 03:16:23,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336346664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:23,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:23,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:23,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770524696] [2022-01-18 03:16:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:23,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:23,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:23,054 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 03:16:23,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:23,990 INFO L93 Difference]: Finished difference Result 1264 states and 3127 transitions. [2022-01-18 03:16:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 03:16:23,991 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 03:16:23,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:23,992 INFO L225 Difference]: With dead ends: 1264 [2022-01-18 03:16:23,992 INFO L226 Difference]: Without dead ends: 1166 [2022-01-18 03:16:23,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:16:23,992 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 268 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:23,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2294 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-18 03:16:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1087. [2022-01-18 03:16:24,000 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 03:16:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-01-18 03:16:24,001 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-01-18 03:16:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:24,001 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-01-18 03:16:24,002 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 03:16:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-01-18 03:16:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:24,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:24,003 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 03:16:24,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-01-18 03:16:24,003 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:24,003 INFO L85 PathProgramCache]: Analyzing trace with hash -706097120, now seen corresponding path program 244 times [2022-01-18 03:16:24,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:24,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39556042] [2022-01-18 03:16:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:24,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:24,300 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 03:16:24,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:24,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39556042] [2022-01-18 03:16:24,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39556042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:24,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:24,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:24,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611150629] [2022-01-18 03:16:24,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:24,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:24,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:24,301 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 03:16:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:25,216 INFO L93 Difference]: Finished difference Result 1232 states and 3043 transitions. [2022-01-18 03:16:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:16:25,216 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 03:16:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:25,218 INFO L225 Difference]: With dead ends: 1232 [2022-01-18 03:16:25,218 INFO L226 Difference]: Without dead ends: 1119 [2022-01-18 03:16:25,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 03:16:25,218 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 245 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:25,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 2329 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-01-18 03:16:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1075. [2022-01-18 03:16:25,226 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 03:16:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2676 transitions. [2022-01-18 03:16:25,227 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2676 transitions. Word has length 79 [2022-01-18 03:16:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:25,227 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2676 transitions. [2022-01-18 03:16:25,227 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 03:16:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2676 transitions. [2022-01-18 03:16:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:25,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:25,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:25,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-01-18 03:16:25,228 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash -147138528, now seen corresponding path program 245 times [2022-01-18 03:16:25,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:25,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108582822] [2022-01-18 03:16:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:25,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:25,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:25,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108582822] [2022-01-18 03:16:25,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108582822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:25,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:25,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:25,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742253989] [2022-01-18 03:16:25,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:25,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:25,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:25,526 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 03:16:28,382 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 03:16:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:28,574 INFO L93 Difference]: Finished difference Result 1361 states and 3337 transitions. [2022-01-18 03:16:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:16:28,575 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 03:16:28,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:28,576 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 03:16:28,576 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 03:16:28,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:16:28,577 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 280 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:28,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2353 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 896 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 03:16:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 03:16:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1087. [2022-01-18 03:16:28,585 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 03:16:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2705 transitions. [2022-01-18 03:16:28,593 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2705 transitions. Word has length 79 [2022-01-18 03:16:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:28,594 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2705 transitions. [2022-01-18 03:16:28,594 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 03:16:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2705 transitions. [2022-01-18 03:16:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:28,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:28,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:28,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-01-18 03:16:28,595 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 567098750, now seen corresponding path program 246 times [2022-01-18 03:16:28,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:28,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172332258] [2022-01-18 03:16:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:28,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:28,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:28,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172332258] [2022-01-18 03:16:28,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172332258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:28,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:28,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:28,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195220951] [2022-01-18 03:16:28,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:28,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:28,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:28,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:28,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:28,888 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 03:16:31,730 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 03:16:31,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:31,916 INFO L93 Difference]: Finished difference Result 1266 states and 3124 transitions. [2022-01-18 03:16:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 03:16:31,917 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 03:16:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:31,918 INFO L225 Difference]: With dead ends: 1266 [2022-01-18 03:16:31,918 INFO L226 Difference]: Without dead ends: 1099 [2022-01-18 03:16:31,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=1704, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:16:31,919 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 258 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:31,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2437 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 923 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 03:16:31,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-01-18 03:16:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1059. [2022-01-18 03:16:31,927 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 03:16:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2632 transitions. [2022-01-18 03:16:31,928 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2632 transitions. Word has length 79 [2022-01-18 03:16:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:31,929 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2632 transitions. [2022-01-18 03:16:31,929 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 03:16:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2632 transitions. [2022-01-18 03:16:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:31,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:31,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:31,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-01-18 03:16:31,930 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:31,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2023485472, now seen corresponding path program 247 times [2022-01-18 03:16:31,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:31,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254775024] [2022-01-18 03:16:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:31,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:32,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:32,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254775024] [2022-01-18 03:16:32,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254775024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:32,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:32,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:32,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700285461] [2022-01-18 03:16:32,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:32,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:32,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:32,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:32,248 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 03:16:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:33,510 INFO L93 Difference]: Finished difference Result 1317 states and 3254 transitions. [2022-01-18 03:16:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:16:33,510 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 03:16:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:33,511 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 03:16:33,511 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 03:16:33,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=2232, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:16:33,512 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 264 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:33,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2581 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:16:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 03:16:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1087. [2022-01-18 03:16:33,520 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 03:16:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:16:33,521 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:16:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:33,521 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:16:33,521 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 03:16:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:16:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:33,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:33,522 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 03:16:33,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-01-18 03:16:33,522 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:33,523 INFO L85 PathProgramCache]: Analyzing trace with hash -954948932, now seen corresponding path program 248 times [2022-01-18 03:16:33,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:33,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099610986] [2022-01-18 03:16:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:33,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:33,823 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 03:16:33,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:33,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099610986] [2022-01-18 03:16:33,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099610986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:33,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:33,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:33,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720274638] [2022-01-18 03:16:33,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:33,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:33,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:33,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:33,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:33,824 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 03:16:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:34,904 INFO L93 Difference]: Finished difference Result 1273 states and 3137 transitions. [2022-01-18 03:16:34,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:16:34,904 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 03:16:34,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:34,905 INFO L225 Difference]: With dead ends: 1273 [2022-01-18 03:16:34,906 INFO L226 Difference]: Without dead ends: 1138 [2022-01-18 03:16:34,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:16:34,906 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 301 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:34,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2586 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-01-18 03:16:34,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1063. [2022-01-18 03:16:34,914 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 03:16:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2639 transitions. [2022-01-18 03:16:34,915 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2639 transitions. Word has length 79 [2022-01-18 03:16:34,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:34,915 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2639 transitions. [2022-01-18 03:16:34,915 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 03:16:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2639 transitions. [2022-01-18 03:16:34,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:34,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:34,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:34,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-01-18 03:16:34,916 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:34,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:34,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2085463962, now seen corresponding path program 249 times [2022-01-18 03:16:34,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:34,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879905517] [2022-01-18 03:16:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:34,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:35,218 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 03:16:35,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:35,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879905517] [2022-01-18 03:16:35,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879905517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:35,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:35,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:35,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760319873] [2022-01-18 03:16:35,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:35,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:35,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:35,219 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 03:16:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:36,173 INFO L93 Difference]: Finished difference Result 1261 states and 3104 transitions. [2022-01-18 03:16:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:16:36,173 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 03:16:36,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:36,175 INFO L225 Difference]: With dead ends: 1261 [2022-01-18 03:16:36,175 INFO L226 Difference]: Without dead ends: 1091 [2022-01-18 03:16:36,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:16:36,175 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 259 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:36,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2636 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-01-18 03:16:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1051. [2022-01-18 03:16:36,183 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 03:16:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2610 transitions. [2022-01-18 03:16:36,184 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2610 transitions. Word has length 79 [2022-01-18 03:16:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:36,184 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2610 transitions. [2022-01-18 03:16:36,184 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 03:16:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2610 transitions. [2022-01-18 03:16:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:36,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:36,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:36,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-01-18 03:16:36,185 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:36,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2088188610, now seen corresponding path program 250 times [2022-01-18 03:16:36,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:36,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407664290] [2022-01-18 03:16:36,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:36,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:36,506 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 03:16:36,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:36,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407664290] [2022-01-18 03:16:36,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407664290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:36,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:36,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:36,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648351006] [2022-01-18 03:16:36,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:36,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:36,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:36,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:36,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:36,507 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 03:16:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:37,726 INFO L93 Difference]: Finished difference Result 1315 states and 3240 transitions. [2022-01-18 03:16:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:16:37,726 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 03:16:37,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:37,728 INFO L225 Difference]: With dead ends: 1315 [2022-01-18 03:16:37,728 INFO L226 Difference]: Without dead ends: 1217 [2022-01-18 03:16:37,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=2142, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:16:37,728 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 255 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:37,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 2901 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:16:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-01-18 03:16:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1099. [2022-01-18 03:16:37,736 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 03:16:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2734 transitions. [2022-01-18 03:16:37,737 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2734 transitions. Word has length 79 [2022-01-18 03:16:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:37,737 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2734 transitions. [2022-01-18 03:16:37,738 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 03:16:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2734 transitions. [2022-01-18 03:16:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:37,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:37,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:37,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-01-18 03:16:37,739 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash -890245794, now seen corresponding path program 251 times [2022-01-18 03:16:37,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:37,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901933520] [2022-01-18 03:16:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:37,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:38,027 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 03:16:38,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:38,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901933520] [2022-01-18 03:16:38,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901933520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:38,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:38,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:38,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481084450] [2022-01-18 03:16:38,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:38,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:38,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:38,028 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 03:16:39,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:39,167 INFO L93 Difference]: Finished difference Result 1283 states and 3152 transitions. [2022-01-18 03:16:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:16:39,167 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 03:16:39,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:39,169 INFO L225 Difference]: With dead ends: 1283 [2022-01-18 03:16:39,169 INFO L226 Difference]: Without dead ends: 1148 [2022-01-18 03:16:39,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:16:39,169 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 254 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:39,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 2590 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:16:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-01-18 03:16:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1075. [2022-01-18 03:16:39,177 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 03:16:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 03:16:39,179 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 03:16:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:39,179 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 03:16:39,179 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 03:16:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 03:16:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:39,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:39,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:39,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-01-18 03:16:39,180 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2036715938, now seen corresponding path program 252 times [2022-01-18 03:16:39,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:39,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071638216] [2022-01-18 03:16:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:39,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:39,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:39,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071638216] [2022-01-18 03:16:39,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071638216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:39,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:39,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:39,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510712721] [2022-01-18 03:16:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:39,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:39,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:39,481 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 03:16:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:40,416 INFO L93 Difference]: Finished difference Result 1259 states and 3086 transitions. [2022-01-18 03:16:40,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:16:40,416 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 03:16:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:40,418 INFO L225 Difference]: With dead ends: 1259 [2022-01-18 03:16:40,418 INFO L226 Difference]: Without dead ends: 1063 [2022-01-18 03:16:40,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:16:40,418 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 269 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:40,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2395 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-01-18 03:16:40,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1035. [2022-01-18 03:16:40,426 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 03:16:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2566 transitions. [2022-01-18 03:16:40,428 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2566 transitions. Word has length 79 [2022-01-18 03:16:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:40,428 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2566 transitions. [2022-01-18 03:16:40,428 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 03:16:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2566 transitions. [2022-01-18 03:16:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:40,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:40,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:40,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-01-18 03:16:40,429 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2112785090, now seen corresponding path program 253 times [2022-01-18 03:16:40,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:40,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905592897] [2022-01-18 03:16:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:40,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:40,763 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 03:16:40,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:40,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905592897] [2022-01-18 03:16:40,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905592897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:40,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:40,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:16:40,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442978127] [2022-01-18 03:16:40,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:40,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:16:40,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:40,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:16:40,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:16:40,764 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 03:16:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:42,201 INFO L93 Difference]: Finished difference Result 1347 states and 3324 transitions. [2022-01-18 03:16:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:16:42,202 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 03:16:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:42,203 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 03:16:42,203 INFO L226 Difference]: Without dead ends: 1249 [2022-01-18 03:16:42,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=2831, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:16:42,204 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 306 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:42,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 2792 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:16:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-01-18 03:16:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1087. [2022-01-18 03:16:42,212 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 03:16:42,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:16:42,213 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:16:42,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:42,214 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:16:42,214 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 03:16:42,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:16:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:42,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:42,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:42,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-01-18 03:16:42,215 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:42,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:42,215 INFO L85 PathProgramCache]: Analyzing trace with hash -865649314, now seen corresponding path program 254 times [2022-01-18 03:16:42,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:42,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129072303] [2022-01-18 03:16:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:42,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:42,523 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 03:16:42,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:42,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129072303] [2022-01-18 03:16:42,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129072303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:42,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:42,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:16:42,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132620521] [2022-01-18 03:16:42,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:42,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:16:42,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:42,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:16:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:16:42,525 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 03:16:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:44,029 INFO L93 Difference]: Finished difference Result 1303 states and 3207 transitions. [2022-01-18 03:16:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:16:44,029 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 03:16:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:44,031 INFO L225 Difference]: With dead ends: 1303 [2022-01-18 03:16:44,031 INFO L226 Difference]: Without dead ends: 1168 [2022-01-18 03:16:44,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=241, Invalid=2729, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:16:44,031 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 323 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:44,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2913 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:16:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-01-18 03:16:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1063. [2022-01-18 03:16:44,039 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 03:16:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-01-18 03:16:44,040 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-01-18 03:16:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:44,041 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-01-18 03:16:44,041 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 03:16:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-01-18 03:16:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:44,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:44,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:44,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-01-18 03:16:44,042 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:44,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2061312418, now seen corresponding path program 255 times [2022-01-18 03:16:44,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:44,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061888440] [2022-01-18 03:16:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:44,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:44,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:44,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061888440] [2022-01-18 03:16:44,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061888440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:44,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:44,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:44,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185269228] [2022-01-18 03:16:44,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:44,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:44,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:44,344 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 03:16:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:45,392 INFO L93 Difference]: Finished difference Result 1267 states and 3108 transitions. [2022-01-18 03:16:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:16:45,393 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 03:16:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:45,394 INFO L225 Difference]: With dead ends: 1267 [2022-01-18 03:16:45,394 INFO L226 Difference]: Without dead ends: 1087 [2022-01-18 03:16:45,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:16:45,394 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 295 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:45,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2426 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-01-18 03:16:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2022-01-18 03:16:45,402 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 03:16:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-01-18 03:16:45,403 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-01-18 03:16:45,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:45,403 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-01-18 03:16:45,403 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 03:16:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-01-18 03:16:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:45,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:45,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:45,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-01-18 03:16:45,404 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:45,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash -248162758, now seen corresponding path program 256 times [2022-01-18 03:16:45,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:45,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459812169] [2022-01-18 03:16:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:45,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:45,747 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 03:16:45,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:45,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459812169] [2022-01-18 03:16:45,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459812169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:45,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:45,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:45,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825862598] [2022-01-18 03:16:45,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:45,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:45,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:45,748 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 03:16:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:46,673 INFO L93 Difference]: Finished difference Result 1282 states and 3143 transitions. [2022-01-18 03:16:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:16:46,674 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 03:16:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:46,675 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 03:16:46,675 INFO L226 Difference]: Without dead ends: 1055 [2022-01-18 03:16:46,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 03:16:46,676 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 257 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:46,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2626 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-01-18 03:16:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1027. [2022-01-18 03:16:46,683 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 03:16:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2544 transitions. [2022-01-18 03:16:46,684 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2544 transitions. Word has length 79 [2022-01-18 03:16:46,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:46,685 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2544 transitions. [2022-01-18 03:16:46,685 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 03:16:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2544 transitions. [2022-01-18 03:16:46,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:46,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:46,686 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 03:16:46,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-01-18 03:16:46,686 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash 216748064, now seen corresponding path program 257 times [2022-01-18 03:16:46,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:46,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370600090] [2022-01-18 03:16:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:46,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:47,013 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 03:16:47,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:47,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370600090] [2022-01-18 03:16:47,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370600090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:47,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:47,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:16:47,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072484610] [2022-01-18 03:16:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:47,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:16:47,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:16:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:16:47,014 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 03:16:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:48,823 INFO L93 Difference]: Finished difference Result 1343 states and 3313 transitions. [2022-01-18 03:16:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:16:48,824 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 03:16:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:48,825 INFO L225 Difference]: With dead ends: 1343 [2022-01-18 03:16:48,825 INFO L226 Difference]: Without dead ends: 1245 [2022-01-18 03:16:48,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=2937, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:16:48,826 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 311 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:48,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2643 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:16:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2022-01-18 03:16:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1087. [2022-01-18 03:16:48,834 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 03:16:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2701 transitions. [2022-01-18 03:16:48,835 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2701 transitions. Word has length 79 [2022-01-18 03:16:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:48,836 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2701 transitions. [2022-01-18 03:16:48,836 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 03:16:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2701 transitions. [2022-01-18 03:16:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:48,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:48,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:48,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-01-18 03:16:48,837 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:48,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1533280956, now seen corresponding path program 258 times [2022-01-18 03:16:48,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:48,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235957563] [2022-01-18 03:16:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:48,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:49,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:49,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235957563] [2022-01-18 03:16:49,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235957563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:49,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:49,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:16:49,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877651402] [2022-01-18 03:16:49,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:49,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:16:49,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:16:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:16:49,160 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 03:16:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:50,501 INFO L93 Difference]: Finished difference Result 1299 states and 3196 transitions. [2022-01-18 03:16:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:16:50,501 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 03:16:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:50,503 INFO L225 Difference]: With dead ends: 1299 [2022-01-18 03:16:50,503 INFO L226 Difference]: Without dead ends: 1164 [2022-01-18 03:16:50,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=247, Invalid=2833, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:16:50,503 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 297 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:50,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 3028 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:16:50,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-01-18 03:16:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1063. [2022-01-18 03:16:50,511 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 03:16:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2635 transitions. [2022-01-18 03:16:50,512 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2635 transitions. Word has length 79 [2022-01-18 03:16:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:50,513 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2635 transitions. [2022-01-18 03:16:50,513 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 03:16:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2635 transitions. [2022-01-18 03:16:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:50,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:50,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:50,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-01-18 03:16:50,514 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:50,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:50,514 INFO L85 PathProgramCache]: Analyzing trace with hash 165275392, now seen corresponding path program 259 times [2022-01-18 03:16:50,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:50,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049036700] [2022-01-18 03:16:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:50,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:50,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:50,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049036700] [2022-01-18 03:16:50,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049036700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:50,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:50,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:16:50,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200180373] [2022-01-18 03:16:50,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:50,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:16:50,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:50,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:16:50,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:16:50,810 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 03:16:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:51,954 INFO L93 Difference]: Finished difference Result 1263 states and 3097 transitions. [2022-01-18 03:16:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:16:51,954 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 03:16:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:51,955 INFO L225 Difference]: With dead ends: 1263 [2022-01-18 03:16:51,955 INFO L226 Difference]: Without dead ends: 1083 [2022-01-18 03:16:51,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=2152, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:16:51,956 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 272 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:51,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 2539 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:16:51,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2022-01-18 03:16:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1039. [2022-01-18 03:16:51,963 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 03:16:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2573 transitions. [2022-01-18 03:16:51,965 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2573 transitions. Word has length 79 [2022-01-18 03:16:51,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:51,965 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2573 transitions. [2022-01-18 03:16:51,965 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 03:16:51,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2573 transitions. [2022-01-18 03:16:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:51,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:51,966 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 03:16:51,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-01-18 03:16:51,966 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:51,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2144199784, now seen corresponding path program 260 times [2022-01-18 03:16:51,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:51,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067981150] [2022-01-18 03:16:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:51,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:52,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067981150] [2022-01-18 03:16:52,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067981150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:52,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:52,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:52,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308343940] [2022-01-18 03:16:52,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:52,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:52,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:52,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:52,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:52,266 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 03:16:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:53,146 INFO L93 Difference]: Finished difference Result 1286 states and 3154 transitions. [2022-01-18 03:16:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:16:53,147 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 03:16:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:53,148 INFO L225 Difference]: With dead ends: 1286 [2022-01-18 03:16:53,148 INFO L226 Difference]: Without dead ends: 1067 [2022-01-18 03:16:53,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:16:53,148 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 295 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:53,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2290 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:16:53,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-01-18 03:16:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1035. [2022-01-18 03:16:53,156 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 03:16:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2562 transitions. [2022-01-18 03:16:53,157 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2562 transitions. Word has length 79 [2022-01-18 03:16:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:53,157 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2562 transitions. [2022-01-18 03:16:53,157 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 03:16:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2562 transitions. [2022-01-18 03:16:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:53,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:53,158 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 03:16:53,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-01-18 03:16:53,158 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash -189132886, now seen corresponding path program 261 times [2022-01-18 03:16:53,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:53,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316987482] [2022-01-18 03:16:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:53,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:53,461 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 03:16:53,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:53,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316987482] [2022-01-18 03:16:53,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316987482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:53,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:53,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:16:53,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359718296] [2022-01-18 03:16:53,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:53,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:16:53,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:16:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:16:53,462 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 03:16:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:54,364 INFO L93 Difference]: Finished difference Result 1304 states and 3191 transitions. [2022-01-18 03:16:54,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 03:16:54,364 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 03:16:54,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:54,365 INFO L225 Difference]: With dead ends: 1304 [2022-01-18 03:16:54,365 INFO L226 Difference]: Without dead ends: 1027 [2022-01-18 03:16:54,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 03:16:54,366 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 302 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:54,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2486 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-01-18 03:16:54,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1011. [2022-01-18 03:16:54,373 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 03:16:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 2500 transitions. [2022-01-18 03:16:54,374 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 2500 transitions. Word has length 79 [2022-01-18 03:16:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:54,374 INFO L470 AbstractCegarLoop]: Abstraction has 1011 states and 2500 transitions. [2022-01-18 03:16:54,374 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 03:16:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 2500 transitions. [2022-01-18 03:16:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:54,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:54,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:54,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-01-18 03:16:54,375 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:54,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2043254816, now seen corresponding path program 262 times [2022-01-18 03:16:54,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:54,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360035385] [2022-01-18 03:16:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:54,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:54,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:54,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360035385] [2022-01-18 03:16:54,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360035385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:54,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:54,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:16:54,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790348256] [2022-01-18 03:16:54,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:54,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:16:54,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:54,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:16:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:16:54,732 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 03:16:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:56,458 INFO L93 Difference]: Finished difference Result 1319 states and 3247 transitions. [2022-01-18 03:16:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:16:56,458 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 03:16:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:56,459 INFO L225 Difference]: With dead ends: 1319 [2022-01-18 03:16:56,460 INFO L226 Difference]: Without dead ends: 1221 [2022-01-18 03:16:56,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=256, Invalid=3050, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:16:56,460 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 331 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:56,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2912 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:16:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-01-18 03:16:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1075. [2022-01-18 03:16:56,468 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 03:16:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2668 transitions. [2022-01-18 03:16:56,469 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2668 transitions. Word has length 79 [2022-01-18 03:16:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:56,469 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2668 transitions. [2022-01-18 03:16:56,469 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 03:16:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2668 transitions. [2022-01-18 03:16:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:56,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:56,470 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 03:16:56,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-01-18 03:16:56,470 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash -935179588, now seen corresponding path program 263 times [2022-01-18 03:16:56,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:56,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34266780] [2022-01-18 03:16:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:56,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:16:56,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:56,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34266780] [2022-01-18 03:16:56,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34266780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:56,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:56,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:16:56,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503893242] [2022-01-18 03:16:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:56,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:16:56,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:16:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:16:56,806 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 03:16:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:58,235 INFO L93 Difference]: Finished difference Result 1275 states and 3130 transitions. [2022-01-18 03:16:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:16:58,235 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 03:16:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:58,236 INFO L225 Difference]: With dead ends: 1275 [2022-01-18 03:16:58,236 INFO L226 Difference]: Without dead ends: 1140 [2022-01-18 03:16:58,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=248, Invalid=2944, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:16:58,237 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 317 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:58,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 3032 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:16:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-01-18 03:16:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1051. [2022-01-18 03:16:58,245 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 03:16:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2602 transitions. [2022-01-18 03:16:58,246 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2602 transitions. Word has length 79 [2022-01-18 03:16:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:58,246 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2602 transitions. [2022-01-18 03:16:58,246 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 03:16:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2602 transitions. [2022-01-18 03:16:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:58,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:58,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:58,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-01-18 03:16:58,247 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1991782144, now seen corresponding path program 264 times [2022-01-18 03:16:58,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:58,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843649188] [2022-01-18 03:16:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:58,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:16:58,559 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 03:16:58,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:16:58,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843649188] [2022-01-18 03:16:58,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843649188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:16:58,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:16:58,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:16:58,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259116723] [2022-01-18 03:16:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:16:58,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:16:58,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:16:58,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:16:58,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:16:58,560 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 03:16:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:16:59,679 INFO L93 Difference]: Finished difference Result 1239 states and 3031 transitions. [2022-01-18 03:16:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:16:59,680 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 03:16:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:16:59,681 INFO L225 Difference]: With dead ends: 1239 [2022-01-18 03:16:59,681 INFO L226 Difference]: Without dead ends: 1059 [2022-01-18 03:16:59,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=2249, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:16:59,682 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 290 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:16:59,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2547 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:16:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-01-18 03:16:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1027. [2022-01-18 03:16:59,689 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 03:16:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2540 transitions. [2022-01-18 03:16:59,690 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2540 transitions. Word has length 79 [2022-01-18 03:16:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:16:59,690 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2540 transitions. [2022-01-18 03:16:59,690 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 03:16:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2540 transitions. [2022-01-18 03:16:59,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:16:59,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:16:59,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:16:59,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-01-18 03:16:59,692 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:16:59,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:16:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -317693032, now seen corresponding path program 265 times [2022-01-18 03:16:59,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:16:59,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407933474] [2022-01-18 03:16:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:16:59,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:16:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:00,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:00,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407933474] [2022-01-18 03:17:00,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407933474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:00,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:00,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:17:00,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227114739] [2022-01-18 03:17:00,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:00,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:17:00,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:17:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:17:00,018 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 03:17:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:00,982 INFO L93 Difference]: Finished difference Result 1262 states and 3088 transitions. [2022-01-18 03:17:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 03:17:00,983 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 03:17:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:00,984 INFO L225 Difference]: With dead ends: 1262 [2022-01-18 03:17:00,984 INFO L226 Difference]: Without dead ends: 1043 [2022-01-18 03:17:00,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 03:17:00,984 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 287 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:00,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2692 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:17:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-01-18 03:17:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1023. [2022-01-18 03:17:00,992 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 03:17:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2529 transitions. [2022-01-18 03:17:00,993 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2529 transitions. Word has length 79 [2022-01-18 03:17:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:00,993 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2529 transitions. [2022-01-18 03:17:00,993 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 03:17:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2529 transitions. [2022-01-18 03:17:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:00,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:00,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:00,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-01-18 03:17:00,994 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:00,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1637373866, now seen corresponding path program 266 times [2022-01-18 03:17:00,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:00,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468319920] [2022-01-18 03:17:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:00,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:01,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:01,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468319920] [2022-01-18 03:17:01,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468319920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:01,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:01,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:17:01,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203473996] [2022-01-18 03:17:01,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:01,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:17:01,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:01,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:17:01,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:17:01,319 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 03:17:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:02,330 INFO L93 Difference]: Finished difference Result 1292 states and 3158 transitions. [2022-01-18 03:17:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:17:02,330 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 03:17:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:02,332 INFO L225 Difference]: With dead ends: 1292 [2022-01-18 03:17:02,332 INFO L226 Difference]: Without dead ends: 1031 [2022-01-18 03:17:02,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 03:17:02,332 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 325 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 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, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:02,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2469 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:17:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-01-18 03:17:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1015. [2022-01-18 03:17:02,339 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 03:17:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2507 transitions. [2022-01-18 03:17:02,340 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2507 transitions. Word has length 79 [2022-01-18 03:17:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:02,340 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 2507 transitions. [2022-01-18 03:17:02,340 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 03:17:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2507 transitions. [2022-01-18 03:17:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:02,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:02,341 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 03:17:02,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-01-18 03:17:02,342 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash -264299060, now seen corresponding path program 267 times [2022-01-18 03:17:02,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:02,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157210952] [2022-01-18 03:17:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:02,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:02,666 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 03:17:02,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:02,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157210952] [2022-01-18 03:17:02,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157210952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:02,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:02,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:17:02,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997741861] [2022-01-18 03:17:02,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:02,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:17:02,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:17:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:17:02,667 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 03:17:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:03,594 INFO L93 Difference]: Finished difference Result 1287 states and 3138 transitions. [2022-01-18 03:17:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:17:03,594 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 03:17:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:03,596 INFO L225 Difference]: With dead ends: 1287 [2022-01-18 03:17:03,596 INFO L226 Difference]: Without dead ends: 971 [2022-01-18 03:17:03,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=1566, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 03:17:03,596 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 284 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:03,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2881 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:17:03,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-01-18 03:17:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2022-01-18 03:17:03,603 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 03:17:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 2419 transitions. [2022-01-18 03:17:03,604 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 2419 transitions. Word has length 79 [2022-01-18 03:17:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:03,605 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 2419 transitions. [2022-01-18 03:17:03,605 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 03:17:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 2419 transitions. [2022-01-18 03:17:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:03,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:03,606 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 03:17:03,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-01-18 03:17:03,606 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:03,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1441860872, now seen corresponding path program 268 times [2022-01-18 03:17:03,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:03,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181780128] [2022-01-18 03:17:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:03,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:03,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:03,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181780128] [2022-01-18 03:17:03,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181780128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:03,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:03,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:03,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134497746] [2022-01-18 03:17:03,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:03,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:03,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:03,933 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 03:17:05,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:17:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:07,057 INFO L93 Difference]: Finished difference Result 1381 states and 3476 transitions. [2022-01-18 03:17:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:17:07,057 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 03:17:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:07,059 INFO L225 Difference]: With dead ends: 1381 [2022-01-18 03:17:07,059 INFO L226 Difference]: Without dead ends: 1251 [2022-01-18 03:17:07,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=297, Invalid=3363, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 03:17:07,059 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 378 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:07,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 2868 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-18 03:17:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-01-18 03:17:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1087. [2022-01-18 03:17:07,068 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 03:17:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2730 transitions. [2022-01-18 03:17:07,069 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2730 transitions. Word has length 79 [2022-01-18 03:17:07,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:07,069 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2730 transitions. [2022-01-18 03:17:07,069 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 03:17:07,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2730 transitions. [2022-01-18 03:17:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:07,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:07,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:07,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-01-18 03:17:07,070 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:07,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:07,071 INFO L85 PathProgramCache]: Analyzing trace with hash 588469706, now seen corresponding path program 269 times [2022-01-18 03:17:07,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:07,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760054446] [2022-01-18 03:17:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:07,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:07,408 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 03:17:07,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:07,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760054446] [2022-01-18 03:17:07,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760054446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:07,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:07,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:17:07,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285571720] [2022-01-18 03:17:07,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:07,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:17:07,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:07,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:17:07,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:17:07,411 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 03:17:09,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:09,419 INFO L93 Difference]: Finished difference Result 1392 states and 3496 transitions. [2022-01-18 03:17:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 03:17:09,419 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 03:17:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:09,421 INFO L225 Difference]: With dead ends: 1392 [2022-01-18 03:17:09,421 INFO L226 Difference]: Without dead ends: 1294 [2022-01-18 03:17:09,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=327, Invalid=3963, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 03:17:09,422 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 409 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:09,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 3017 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:17:09,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-01-18 03:17:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1091. [2022-01-18 03:17:09,430 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 03:17:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2737 transitions. [2022-01-18 03:17:09,432 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2737 transitions. Word has length 79 [2022-01-18 03:17:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:09,432 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2737 transitions. [2022-01-18 03:17:09,432 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 03:17:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2737 transitions. [2022-01-18 03:17:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:09,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:09,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:09,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-01-18 03:17:09,433 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:09,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1302706984, now seen corresponding path program 270 times [2022-01-18 03:17:09,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:09,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630046466] [2022-01-18 03:17:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:09,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:09,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:09,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630046466] [2022-01-18 03:17:09,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630046466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:09,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:09,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:17:09,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822049565] [2022-01-18 03:17:09,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:09,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:17:09,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:17:09,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:17:09,780 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 03:17:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:11,754 INFO L93 Difference]: Finished difference Result 1375 states and 3447 transitions. [2022-01-18 03:17:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 03:17:11,754 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 03:17:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:11,756 INFO L225 Difference]: With dead ends: 1375 [2022-01-18 03:17:11,756 INFO L226 Difference]: Without dead ends: 1262 [2022-01-18 03:17:11,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=320, Invalid=3840, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 03:17:11,756 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 362 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:11,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 3151 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:17:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-01-18 03:17:11,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1079. [2022-01-18 03:17:11,765 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 03:17:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2704 transitions. [2022-01-18 03:17:11,766 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2704 transitions. Word has length 79 [2022-01-18 03:17:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:11,766 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2704 transitions. [2022-01-18 03:17:11,766 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 03:17:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2704 transitions. [2022-01-18 03:17:11,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:11,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:11,767 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 03:17:11,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-01-18 03:17:11,768 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:11,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:11,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1628155210, now seen corresponding path program 271 times [2022-01-18 03:17:11,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:11,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200922890] [2022-01-18 03:17:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:11,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:12,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:12,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200922890] [2022-01-18 03:17:12,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200922890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:12,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:12,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:12,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421738461] [2022-01-18 03:17:12,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:12,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:12,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:12,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:12,095 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 03:17:14,392 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 03:17:16,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:17:18,670 WARN L534 Checker$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 03:17:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:19,514 INFO L93 Difference]: Finished difference Result 1433 states and 3595 transitions. [2022-01-18 03:17:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:17:19,515 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 03:17:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:19,516 INFO L225 Difference]: With dead ends: 1433 [2022-01-18 03:17:19,516 INFO L226 Difference]: Without dead ends: 1283 [2022-01-18 03:17:19,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=3033, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:17:19,517 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 340 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 37 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:19,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2788 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1096 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-01-18 03:17:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-01-18 03:17:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1127. [2022-01-18 03:17:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.5150976909413854) internal successors, (2832), 1126 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 03:17:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2832 transitions. [2022-01-18 03:17:19,527 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2832 transitions. Word has length 79 [2022-01-18 03:17:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:19,527 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2832 transitions. [2022-01-18 03:17:19,527 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 03:17:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2832 transitions. [2022-01-18 03:17:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:19,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:19,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:19,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-01-18 03:17:19,529 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:19,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1805229752, now seen corresponding path program 272 times [2022-01-18 03:17:19,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:19,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320295422] [2022-01-18 03:17:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:19,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:19,875 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 03:17:19,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:19,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320295422] [2022-01-18 03:17:19,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320295422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:19,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:19,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:19,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642484557] [2022-01-18 03:17:19,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:19,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:19,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:19,876 INFO L87 Difference]: Start difference. First operand 1127 states and 2832 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 03:17:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:21,441 INFO L93 Difference]: Finished difference Result 1418 states and 3555 transitions. [2022-01-18 03:17:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:17:21,442 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 03:17:21,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:21,443 INFO L225 Difference]: With dead ends: 1418 [2022-01-18 03:17:21,443 INFO L226 Difference]: Without dead ends: 1320 [2022-01-18 03:17:21,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=291, Invalid=3249, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 03:17:21,444 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 347 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:21,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2692 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:17:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-18 03:17:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1151. [2022-01-18 03:17:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.5130434782608697) internal successors, (2890), 1150 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2890 transitions. [2022-01-18 03:17:21,455 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2890 transitions. Word has length 79 [2022-01-18 03:17:21,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:21,455 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2890 transitions. [2022-01-18 03:17:21,455 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 03:17:21,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2890 transitions. [2022-01-18 03:17:21,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:21,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:21,456 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 03:17:21,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-01-18 03:17:21,456 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash -488696860, now seen corresponding path program 273 times [2022-01-18 03:17:21,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:21,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662134900] [2022-01-18 03:17:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:21,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:21,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:21,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662134900] [2022-01-18 03:17:21,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662134900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:21,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:21,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:21,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374874498] [2022-01-18 03:17:21,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:21,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:21,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:21,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:21,773 INFO L87 Difference]: Start difference. First operand 1151 states and 2890 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 03:17:25,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:17:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:26,284 INFO L93 Difference]: Finished difference Result 1401 states and 3502 transitions. [2022-01-18 03:17:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:17:26,284 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 03:17:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:26,286 INFO L225 Difference]: With dead ends: 1401 [2022-01-18 03:17:26,286 INFO L226 Difference]: Without dead ends: 1242 [2022-01-18 03:17:26,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:17:26,286 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 362 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:26,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2784 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-18 03:17:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2022-01-18 03:17:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1103. [2022-01-18 03:17:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1102 states have (on average 2.5063520871143377) internal successors, (2762), 1102 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 2762 transitions. [2022-01-18 03:17:26,296 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 2762 transitions. Word has length 79 [2022-01-18 03:17:26,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:26,296 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 2762 transitions. [2022-01-18 03:17:26,297 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 03:17:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 2762 transitions. [2022-01-18 03:17:26,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:26,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:26,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:26,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-01-18 03:17:26,298 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:26,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2095320746, now seen corresponding path program 274 times [2022-01-18 03:17:26,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:26,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255693509] [2022-01-18 03:17:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:26,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:26,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:26,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255693509] [2022-01-18 03:17:26,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255693509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:26,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:26,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:26,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589357909] [2022-01-18 03:17:26,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:26,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:26,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:26,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:26,625 INFO L87 Difference]: Start difference. First operand 1103 states and 2762 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 03:17:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:28,583 INFO L93 Difference]: Finished difference Result 1397 states and 3500 transitions. [2022-01-18 03:17:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 03:17:28,583 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 03:17:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:28,585 INFO L225 Difference]: With dead ends: 1397 [2022-01-18 03:17:28,585 INFO L226 Difference]: Without dead ends: 1267 [2022-01-18 03:17:28,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=286, Invalid=3254, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 03:17:28,586 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 343 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:28,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2681 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:17:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-18 03:17:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1123. [2022-01-18 03:17:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.5035650623885917) internal successors, (2809), 1122 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2809 transitions. [2022-01-18 03:17:28,596 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2809 transitions. Word has length 79 [2022-01-18 03:17:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:28,596 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2809 transitions. [2022-01-18 03:17:28,596 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 03:17:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2809 transitions. [2022-01-18 03:17:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:28,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:28,597 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 03:17:28,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-01-18 03:17:28,597 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:28,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1241929580, now seen corresponding path program 275 times [2022-01-18 03:17:28,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:28,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667386265] [2022-01-18 03:17:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:28,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:28,943 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 03:17:28,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:28,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667386265] [2022-01-18 03:17:28,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667386265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:28,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:28,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:17:28,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652125474] [2022-01-18 03:17:28,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:28,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:17:28,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:17:28,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:17:28,945 INFO L87 Difference]: Start difference. First operand 1123 states and 2809 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 03:17:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:30,962 INFO L93 Difference]: Finished difference Result 1388 states and 3469 transitions. [2022-01-18 03:17:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 03:17:30,963 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 03:17:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:30,964 INFO L225 Difference]: With dead ends: 1388 [2022-01-18 03:17:30,964 INFO L226 Difference]: Without dead ends: 1290 [2022-01-18 03:17:30,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=3721, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 03:17:30,964 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 367 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:30,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 2808 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:17:30,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-01-18 03:17:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1127. [2022-01-18 03:17:30,973 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 03:17:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-01-18 03:17:30,975 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-01-18 03:17:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:30,975 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-01-18 03:17:30,975 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 03:17:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-01-18 03:17:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:30,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:30,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:30,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-01-18 03:17:30,976 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:30,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1956166858, now seen corresponding path program 276 times [2022-01-18 03:17:30,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:30,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719205602] [2022-01-18 03:17:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:30,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:31,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:31,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719205602] [2022-01-18 03:17:31,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719205602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:31,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:31,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:17:31,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615446964] [2022-01-18 03:17:31,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:31,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:17:31,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:31,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:17:31,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:17:31,323 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 03:17:32,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:33,000 INFO L93 Difference]: Finished difference Result 1371 states and 3420 transitions. [2022-01-18 03:17:33,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 03:17:33,000 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 03:17:33,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:33,002 INFO L225 Difference]: With dead ends: 1371 [2022-01-18 03:17:33,002 INFO L226 Difference]: Without dead ends: 1258 [2022-01-18 03:17:33,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=305, Invalid=3601, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:17:33,002 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 375 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:33,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 2843 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:17:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-01-18 03:17:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1111. [2022-01-18 03:17:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.5081081081081082) internal successors, (2784), 1110 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2784 transitions. [2022-01-18 03:17:33,013 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2784 transitions. Word has length 79 [2022-01-18 03:17:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:33,013 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2784 transitions. [2022-01-18 03:17:33,013 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 03:17:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2784 transitions. [2022-01-18 03:17:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:33,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:33,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:33,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-01-18 03:17:33,015 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:33,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:33,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2013352212, now seen corresponding path program 277 times [2022-01-18 03:17:33,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:33,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403661170] [2022-01-18 03:17:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:33,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:33,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:33,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403661170] [2022-01-18 03:17:33,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403661170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:33,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:33,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:33,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929047672] [2022-01-18 03:17:33,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:33,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:33,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:33,341 INFO L87 Difference]: Start difference. First operand 1111 states and 2784 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 03:17:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:35,080 INFO L93 Difference]: Finished difference Result 1377 states and 3441 transitions. [2022-01-18 03:17:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:17:35,081 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 03:17:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:35,082 INFO L225 Difference]: With dead ends: 1377 [2022-01-18 03:17:35,082 INFO L226 Difference]: Without dead ends: 1227 [2022-01-18 03:17:35,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:17:35,083 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 304 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:35,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2929 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:17:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2022-01-18 03:17:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1111. [2022-01-18 03:17:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.5045045045045047) internal successors, (2780), 1110 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2780 transitions. [2022-01-18 03:17:35,093 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2780 transitions. Word has length 79 [2022-01-18 03:17:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:35,093 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2780 transitions. [2022-01-18 03:17:35,093 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 03:17:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2780 transitions. [2022-01-18 03:17:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:35,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:35,094 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 03:17:35,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-01-18 03:17:35,094 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:35,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1575034120, now seen corresponding path program 278 times [2022-01-18 03:17:35,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:35,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050246727] [2022-01-18 03:17:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:35,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:35,426 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 03:17:35,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:35,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050246727] [2022-01-18 03:17:35,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050246727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:35,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:35,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:35,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588210751] [2022-01-18 03:17:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:35,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:35,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:35,427 INFO L87 Difference]: Start difference. First operand 1111 states and 2780 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 03:17:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:37,018 INFO L93 Difference]: Finished difference Result 1409 states and 3517 transitions. [2022-01-18 03:17:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:17:37,018 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 03:17:37,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:37,019 INFO L225 Difference]: With dead ends: 1409 [2022-01-18 03:17:37,019 INFO L226 Difference]: Without dead ends: 1207 [2022-01-18 03:17:37,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:17:37,020 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 360 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:37,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 2912 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:17:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-18 03:17:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1087. [2022-01-18 03:17:37,029 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 03:17:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2710 transitions. [2022-01-18 03:17:37,030 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2710 transitions. Word has length 79 [2022-01-18 03:17:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:37,030 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2710 transitions. [2022-01-18 03:17:37,030 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 03:17:37,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2710 transitions. [2022-01-18 03:17:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:37,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:37,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:37,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-01-18 03:17:37,032 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash -982497334, now seen corresponding path program 279 times [2022-01-18 03:17:37,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:37,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737978492] [2022-01-18 03:17:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:37,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:37,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:37,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737978492] [2022-01-18 03:17:37,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737978492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:37,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:37,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:17:37,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380638833] [2022-01-18 03:17:37,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:37,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:17:37,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:17:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:17:37,415 INFO L87 Difference]: Start difference. First operand 1087 states and 2710 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 03:17:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:39,297 INFO L93 Difference]: Finished difference Result 1429 states and 3580 transitions. [2022-01-18 03:17:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 03:17:39,297 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 03:17:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:39,299 INFO L225 Difference]: With dead ends: 1429 [2022-01-18 03:17:39,299 INFO L226 Difference]: Without dead ends: 1299 [2022-01-18 03:17:39,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=340, Invalid=4216, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 03:17:39,300 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 349 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:39,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 3292 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:17:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-01-18 03:17:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1127. [2022-01-18 03:17:39,309 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 03:17:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2812 transitions. [2022-01-18 03:17:39,310 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2812 transitions. Word has length 79 [2022-01-18 03:17:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:39,311 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2812 transitions. [2022-01-18 03:17:39,311 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 03:17:39,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2812 transitions. [2022-01-18 03:17:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:39,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:39,312 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 03:17:39,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-01-18 03:17:39,312 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:39,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1835888500, now seen corresponding path program 280 times [2022-01-18 03:17:39,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:39,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893708358] [2022-01-18 03:17:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:39,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:39,691 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 03:17:39,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:39,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893708358] [2022-01-18 03:17:39,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893708358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:39,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:39,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:17:39,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155200022] [2022-01-18 03:17:39,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:39,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:17:39,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:17:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:17:39,692 INFO L87 Difference]: Start difference. First operand 1127 states and 2812 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 03:17:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:41,508 INFO L93 Difference]: Finished difference Result 1420 states and 3549 transitions. [2022-01-18 03:17:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 03:17:41,508 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 03:17:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:41,510 INFO L225 Difference]: With dead ends: 1420 [2022-01-18 03:17:41,510 INFO L226 Difference]: Without dead ends: 1322 [2022-01-18 03:17:41,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:17:41,511 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 359 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:41,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2972 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:17:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-01-18 03:17:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1131. [2022-01-18 03:17:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.494690265486726) internal successors, (2819), 1130 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2819 transitions. [2022-01-18 03:17:41,521 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2819 transitions. Word has length 79 [2022-01-18 03:17:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:41,521 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2819 transitions. [2022-01-18 03:17:41,521 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 03:17:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2819 transitions. [2022-01-18 03:17:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:41,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:41,522 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 03:17:41,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-01-18 03:17:41,522 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:41,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:41,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1121651222, now seen corresponding path program 281 times [2022-01-18 03:17:41,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:41,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354360137] [2022-01-18 03:17:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:41,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:41,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:41,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354360137] [2022-01-18 03:17:41,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354360137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:41,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:41,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:17:41,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65193690] [2022-01-18 03:17:41,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:41,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:17:41,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:17:41,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:17:41,859 INFO L87 Difference]: Start difference. First operand 1131 states and 2819 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 03:17:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:43,398 INFO L93 Difference]: Finished difference Result 1403 states and 3500 transitions. [2022-01-18 03:17:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 03:17:43,398 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 03:17:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:43,400 INFO L225 Difference]: With dead ends: 1403 [2022-01-18 03:17:43,400 INFO L226 Difference]: Without dead ends: 1290 [2022-01-18 03:17:43,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:17:43,400 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 328 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:43,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 3003 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:17:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-01-18 03:17:43,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1115. [2022-01-18 03:17:43,409 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 03:17:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2779 transitions. [2022-01-18 03:17:43,410 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2779 transitions. Word has length 79 [2022-01-18 03:17:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:43,410 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2779 transitions. [2022-01-18 03:17:43,410 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 03:17:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2779 transitions. [2022-01-18 03:17:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:43,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:43,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:43,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-01-18 03:17:43,412 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash -796202996, now seen corresponding path program 282 times [2022-01-18 03:17:43,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:43,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67233829] [2022-01-18 03:17:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:43,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:43,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:43,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67233829] [2022-01-18 03:17:43,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67233829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:43,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:43,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:17:43,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403090671] [2022-01-18 03:17:43,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:43,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:17:43,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:43,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:17:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:17:43,781 INFO L87 Difference]: Start difference. First operand 1115 states and 2779 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 03:17:45,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:45,540 INFO L93 Difference]: Finished difference Result 1413 states and 3524 transitions. [2022-01-18 03:17:45,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 03:17:45,540 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 03:17:45,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:45,541 INFO L225 Difference]: With dead ends: 1413 [2022-01-18 03:17:45,541 INFO L226 Difference]: Without dead ends: 1239 [2022-01-18 03:17:45,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=3847, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 03:17:45,542 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 332 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:45,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 3202 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:17:45,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-01-18 03:17:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1063. [2022-01-18 03:17:45,550 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 03:17:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2652 transitions. [2022-01-18 03:17:45,551 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2652 transitions. Word has length 79 [2022-01-18 03:17:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:45,551 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2652 transitions. [2022-01-18 03:17:45,551 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 03:17:45,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2652 transitions. [2022-01-18 03:17:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:45,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:45,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:45,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-01-18 03:17:45,552 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:45,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:45,553 INFO L85 PathProgramCache]: Analyzing trace with hash 65379338, now seen corresponding path program 283 times [2022-01-18 03:17:45,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:45,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467949563] [2022-01-18 03:17:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:45,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:45,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:45,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467949563] [2022-01-18 03:17:45,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467949563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:45,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:45,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:45,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792005722] [2022-01-18 03:17:45,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:45,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:45,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:45,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:45,877 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 03:17:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:47,853 INFO L93 Difference]: Finished difference Result 1346 states and 3353 transitions. [2022-01-18 03:17:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:17:47,854 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 03:17:47,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:47,855 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 03:17:47,855 INFO L226 Difference]: Without dead ends: 1248 [2022-01-18 03:17:47,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:17:47,856 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 336 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:47,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2885 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:17:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-01-18 03:17:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1087. [2022-01-18 03:17:47,864 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 03:17:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2710 transitions. [2022-01-18 03:17:47,865 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2710 transitions. Word has length 79 [2022-01-18 03:17:47,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:47,865 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2710 transitions. [2022-01-18 03:17:47,865 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 03:17:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2710 transitions. [2022-01-18 03:17:47,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:47,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:47,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:47,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-01-18 03:17:47,867 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:47,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1381912230, now seen corresponding path program 284 times [2022-01-18 03:17:47,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:47,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153134972] [2022-01-18 03:17:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:47,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:48,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:48,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153134972] [2022-01-18 03:17:48,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153134972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:48,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:48,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:48,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27660924] [2022-01-18 03:17:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:48,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:48,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:48,176 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 03:17:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:49,541 INFO L93 Difference]: Finished difference Result 1314 states and 3265 transitions. [2022-01-18 03:17:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:17:49,541 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 03:17:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:49,542 INFO L225 Difference]: With dead ends: 1314 [2022-01-18 03:17:49,542 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 03:17:49,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:17:49,543 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 281 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:49,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 2949 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:17:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 03:17:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1039. [2022-01-18 03:17:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.4990366088631983) internal successors, (2594), 1038 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2594 transitions. [2022-01-18 03:17:49,552 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2594 transitions. Word has length 79 [2022-01-18 03:17:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:49,552 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2594 transitions. [2022-01-18 03:17:49,552 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 03:17:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2594 transitions. [2022-01-18 03:17:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:49,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:49,553 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 03:17:49,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-01-18 03:17:49,553 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1579397944, now seen corresponding path program 285 times [2022-01-18 03:17:49,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:49,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32329586] [2022-01-18 03:17:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:49,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:49,870 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 03:17:49,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:49,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32329586] [2022-01-18 03:17:49,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32329586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:49,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:49,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:49,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104831245] [2022-01-18 03:17:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:49,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:49,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:49,871 INFO L87 Difference]: Start difference. First operand 1039 states and 2594 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 03:17:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:52,743 INFO L93 Difference]: Finished difference Result 1341 states and 3354 transitions. [2022-01-18 03:17:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 03:17:52,743 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 03:17:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:52,745 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 03:17:52,745 INFO L226 Difference]: Without dead ends: 1211 [2022-01-18 03:17:52,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=289, Invalid=3251, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 03:17:52,745 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 371 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:52,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 2662 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 03:17:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-01-18 03:17:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1071. [2022-01-18 03:17:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.499065420560748) internal successors, (2674), 1070 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2674 transitions. [2022-01-18 03:17:52,755 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2674 transitions. Word has length 79 [2022-01-18 03:17:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:52,756 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2674 transitions. [2022-01-18 03:17:52,756 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 03:17:52,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2674 transitions. [2022-01-18 03:17:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:52,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:52,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:52,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-01-18 03:17:52,757 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1862178186, now seen corresponding path program 286 times [2022-01-18 03:17:52,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:52,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024747515] [2022-01-18 03:17:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:52,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:53,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:53,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024747515] [2022-01-18 03:17:53,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024747515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:53,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:53,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:53,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455391474] [2022-01-18 03:17:53,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:53,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:53,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:53,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:53,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:53,087 INFO L87 Difference]: Start difference. First operand 1071 states and 2674 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 03:17:54,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:54,704 INFO L93 Difference]: Finished difference Result 1328 states and 3312 transitions. [2022-01-18 03:17:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:17:54,704 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 03:17:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:54,706 INFO L225 Difference]: With dead ends: 1328 [2022-01-18 03:17:54,706 INFO L226 Difference]: Without dead ends: 1230 [2022-01-18 03:17:54,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:17:54,707 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 321 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:54,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2668 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:17:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-01-18 03:17:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1075. [2022-01-18 03:17:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.496275605214153) internal successors, (2681), 1074 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:17:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2681 transitions. [2022-01-18 03:17:54,716 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2681 transitions. Word has length 79 [2022-01-18 03:17:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:54,716 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2681 transitions. [2022-01-18 03:17:54,716 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 03:17:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2681 transitions. [2022-01-18 03:17:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:54,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:54,717 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 03:17:54,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-01-18 03:17:54,717 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:54,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:54,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1718551832, now seen corresponding path program 287 times [2022-01-18 03:17:54,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:54,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960767177] [2022-01-18 03:17:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:54,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:55,065 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 03:17:55,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:55,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960767177] [2022-01-18 03:17:55,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960767177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:55,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:55,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:55,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848277596] [2022-01-18 03:17:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:55,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:55,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:55,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:55,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:55,066 INFO L87 Difference]: Start difference. First operand 1075 states and 2681 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 03:17:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:56,487 INFO L93 Difference]: Finished difference Result 1296 states and 3228 transitions. [2022-01-18 03:17:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:17:56,487 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 03:17:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:56,489 INFO L225 Difference]: With dead ends: 1296 [2022-01-18 03:17:56,489 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 03:17:56,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=2912, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:17:56,489 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 307 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:56,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2906 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:17:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 03:17:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1063. [2022-01-18 03:17:56,497 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 03:17:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2652 transitions. [2022-01-18 03:17:56,498 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2652 transitions. Word has length 79 [2022-01-18 03:17:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:56,498 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2652 transitions. [2022-01-18 03:17:56,498 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 03:17:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2652 transitions. [2022-01-18 03:17:56,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:56,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:56,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:56,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-01-18 03:17:56,500 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:56,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1159593240, now seen corresponding path program 288 times [2022-01-18 03:17:56,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:56,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637124793] [2022-01-18 03:17:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:56,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:17:56,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:56,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637124793] [2022-01-18 03:17:56,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637124793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:56,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:56,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:56,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84651514] [2022-01-18 03:17:56,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:56,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:56,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:56,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:56,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:56,831 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 03:17:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:17:58,524 INFO L93 Difference]: Finished difference Result 1346 states and 3353 transitions. [2022-01-18 03:17:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:17:58,524 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 03:17:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:17:58,526 INFO L225 Difference]: With dead ends: 1346 [2022-01-18 03:17:58,526 INFO L226 Difference]: Without dead ends: 1248 [2022-01-18 03:17:58,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 03:17:58,526 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 326 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:17:58,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2833 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:17:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-01-18 03:17:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1087. [2022-01-18 03:17:58,534 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 03:17:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2710 transitions. [2022-01-18 03:17:58,536 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2710 transitions. Word has length 79 [2022-01-18 03:17:58,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:17:58,536 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2710 transitions. [2022-01-18 03:17:58,536 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 03:17:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2710 transitions. [2022-01-18 03:17:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:17:58,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:17:58,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:17:58,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-01-18 03:17:58,537 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:17:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:17:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 156939652, now seen corresponding path program 289 times [2022-01-18 03:17:58,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:17:58,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59957576] [2022-01-18 03:17:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:17:58,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:17:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:17:58,855 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 03:17:58,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:17:58,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59957576] [2022-01-18 03:17:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59957576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:17:58,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:17:58,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:17:58,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641185048] [2022-01-18 03:17:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:17:58,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:17:58,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:17:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:17:58,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:17:58,856 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 03:18:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:00,841 INFO L93 Difference]: Finished difference Result 1314 states and 3265 transitions. [2022-01-18 03:18:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:18:00,841 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 03:18:00,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:00,843 INFO L225 Difference]: With dead ends: 1314 [2022-01-18 03:18:00,843 INFO L226 Difference]: Without dead ends: 1163 [2022-01-18 03:18:00,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:18:00,843 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 352 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:00,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2795 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:18:00,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-01-18 03:18:00,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1047. [2022-01-18 03:18:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.4933078393881454) internal successors, (2608), 1046 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 03:18:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2608 transitions. [2022-01-18 03:18:00,853 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2608 transitions. Word has length 79 [2022-01-18 03:18:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:00,853 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2608 transitions. [2022-01-18 03:18:00,853 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 03:18:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2608 transitions. [2022-01-18 03:18:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:00,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:00,854 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 03:18:00,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-01-18 03:18:00,854 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:00,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:00,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1011030760, now seen corresponding path program 290 times [2022-01-18 03:18:00,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:00,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463519488] [2022-01-18 03:18:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:00,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:01,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:01,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463519488] [2022-01-18 03:18:01,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463519488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:01,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:01,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:01,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352152368] [2022-01-18 03:18:01,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:01,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:01,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:01,191 INFO L87 Difference]: Start difference. First operand 1047 states and 2608 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 03:18:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:03,319 INFO L93 Difference]: Finished difference Result 1354 states and 3371 transitions. [2022-01-18 03:18:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 03:18:03,319 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 03:18:03,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:03,321 INFO L225 Difference]: With dead ends: 1354 [2022-01-18 03:18:03,321 INFO L226 Difference]: Without dead ends: 1256 [2022-01-18 03:18:03,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=310, Invalid=3596, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:18:03,321 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 323 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:03,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2997 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 03:18:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-01-18 03:18:03,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1075. [2022-01-18 03:18:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.492551210428305) internal successors, (2677), 1074 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 03:18:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2677 transitions. [2022-01-18 03:18:03,331 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2677 transitions. Word has length 79 [2022-01-18 03:18:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:03,331 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2677 transitions. [2022-01-18 03:18:03,331 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 03:18:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2677 transitions. [2022-01-18 03:18:03,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:03,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:03,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:03,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-01-18 03:18:03,332 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:03,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1967403644, now seen corresponding path program 291 times [2022-01-18 03:18:03,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:03,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945726058] [2022-01-18 03:18:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:03,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:03,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:03,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945726058] [2022-01-18 03:18:03,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945726058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:03,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:03,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:03,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577539237] [2022-01-18 03:18:03,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:03,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:03,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:03,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:03,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:03,649 INFO L87 Difference]: Start difference. First operand 1075 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 03:18:05,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:05,344 INFO L93 Difference]: Finished difference Result 1310 states and 3254 transitions. [2022-01-18 03:18:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 03:18:05,344 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 03:18:05,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:05,345 INFO L225 Difference]: With dead ends: 1310 [2022-01-18 03:18:05,345 INFO L226 Difference]: Without dead ends: 1175 [2022-01-18 03:18:05,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=302, Invalid=3480, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:18:05,346 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 325 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:05,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2852 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:18:05,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2022-01-18 03:18:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1051. [2022-01-18 03:18:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4904761904761905) internal successors, (2615), 1050 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2615 transitions. [2022-01-18 03:18:05,355 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2615 transitions. Word has length 79 [2022-01-18 03:18:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:05,355 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2615 transitions. [2022-01-18 03:18:05,355 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 03:18:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2615 transitions. [2022-01-18 03:18:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:05,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:05,356 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 03:18:05,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-01-18 03:18:05,356 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1197048622, now seen corresponding path program 292 times [2022-01-18 03:18:05,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:05,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813467866] [2022-01-18 03:18:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:05,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:05,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:05,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813467866] [2022-01-18 03:18:05,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813467866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:05,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:05,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:05,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235508367] [2022-01-18 03:18:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:05,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:05,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:05,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:05,710 INFO L87 Difference]: Start difference. First operand 1051 states and 2615 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 03:18:07,993 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 03:18:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:09,243 INFO L93 Difference]: Finished difference Result 1328 states and 3291 transitions. [2022-01-18 03:18:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:18:09,243 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 03:18:09,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:09,245 INFO L225 Difference]: With dead ends: 1328 [2022-01-18 03:18:09,245 INFO L226 Difference]: Without dead ends: 1146 [2022-01-18 03:18:09,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=2831, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:18:09,245 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 336 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:09,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2694 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 997 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 03:18:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-01-18 03:18:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1027. [2022-01-18 03:18:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 2.496101364522417) internal successors, (2561), 1026 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 2561 transitions. [2022-01-18 03:18:09,254 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 2561 transitions. Word has length 79 [2022-01-18 03:18:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:09,254 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 2561 transitions. [2022-01-18 03:18:09,254 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 03:18:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 2561 transitions. [2022-01-18 03:18:09,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:09,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:09,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:09,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-01-18 03:18:09,255 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:09,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:09,256 INFO L85 PathProgramCache]: Analyzing trace with hash -38797690, now seen corresponding path program 293 times [2022-01-18 03:18:09,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:09,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821517076] [2022-01-18 03:18:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:09,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:09,576 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 03:18:09,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:09,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821517076] [2022-01-18 03:18:09,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821517076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:09,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:09,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:09,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035626516] [2022-01-18 03:18:09,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:09,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:09,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:09,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:09,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:09,577 INFO L87 Difference]: Start difference. First operand 1027 states and 2561 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 03:18:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:11,154 INFO L93 Difference]: Finished difference Result 1365 states and 3420 transitions. [2022-01-18 03:18:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:18:11,154 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 03:18:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:11,156 INFO L225 Difference]: With dead ends: 1365 [2022-01-18 03:18:11,156 INFO L226 Difference]: Without dead ends: 1235 [2022-01-18 03:18:11,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:18:11,156 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 300 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:11,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2980 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:18:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-01-18 03:18:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1087. [2022-01-18 03:18:11,165 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 03:18:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2718 transitions. [2022-01-18 03:18:11,167 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2718 transitions. Word has length 79 [2022-01-18 03:18:11,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:11,167 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2718 transitions. [2022-01-18 03:18:11,167 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 03:18:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2718 transitions. [2022-01-18 03:18:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:11,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:11,168 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 03:18:11,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-01-18 03:18:11,168 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:11,168 INFO L85 PathProgramCache]: Analyzing trace with hash -892188856, now seen corresponding path program 294 times [2022-01-18 03:18:11,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:11,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409425827] [2022-01-18 03:18:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:11,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:11,509 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 03:18:11,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:11,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409425827] [2022-01-18 03:18:11,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409425827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:11,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:11,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:11,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15409154] [2022-01-18 03:18:11,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:11,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:11,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:11,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:11,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:11,510 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 03:18:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:13,356 INFO L93 Difference]: Finished difference Result 1376 states and 3440 transitions. [2022-01-18 03:18:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 03:18:13,357 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 03:18:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:13,358 INFO L225 Difference]: With dead ends: 1376 [2022-01-18 03:18:13,358 INFO L226 Difference]: Without dead ends: 1278 [2022-01-18 03:18:13,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=300, Invalid=3606, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:18:13,359 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 330 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:13,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 3256 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:18:13,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2022-01-18 03:18:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1091. [2022-01-18 03:18:13,367 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 03:18:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2725 transitions. [2022-01-18 03:18:13,369 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2725 transitions. Word has length 79 [2022-01-18 03:18:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:13,369 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2725 transitions. [2022-01-18 03:18:13,369 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 03:18:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2725 transitions. [2022-01-18 03:18:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:13,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:13,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:13,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-01-18 03:18:13,370 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:13,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:13,370 INFO L85 PathProgramCache]: Analyzing trace with hash -177951578, now seen corresponding path program 295 times [2022-01-18 03:18:13,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:13,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776511253] [2022-01-18 03:18:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:13,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:13,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:13,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776511253] [2022-01-18 03:18:13,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776511253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:13,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:13,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:13,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692884256] [2022-01-18 03:18:13,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:13,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:13,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:13,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:13,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:13,704 INFO L87 Difference]: Start difference. First operand 1091 states and 2725 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 03:18:15,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:15,421 INFO L93 Difference]: Finished difference Result 1359 states and 3391 transitions. [2022-01-18 03:18:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:18:15,421 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 03:18:15,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:15,423 INFO L225 Difference]: With dead ends: 1359 [2022-01-18 03:18:15,423 INFO L226 Difference]: Without dead ends: 1246 [2022-01-18 03:18:15,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=293, Invalid=3489, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:18:15,424 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 341 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:15,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 3284 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:18:15,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-01-18 03:18:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1079. [2022-01-18 03:18:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 2.49721706864564) internal successors, (2692), 1078 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 03:18:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2692 transitions. [2022-01-18 03:18:15,433 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2692 transitions. Word has length 79 [2022-01-18 03:18:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:15,433 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 2692 transitions. [2022-01-18 03:18:15,433 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 03:18:15,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2692 transitions. [2022-01-18 03:18:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:15,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:15,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:15,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-01-18 03:18:15,434 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:15,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:15,435 INFO L85 PathProgramCache]: Analyzing trace with hash 147496648, now seen corresponding path program 296 times [2022-01-18 03:18:15,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:15,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237292120] [2022-01-18 03:18:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:15,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:15,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:15,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237292120] [2022-01-18 03:18:15,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237292120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:15,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:15,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:15,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951871874] [2022-01-18 03:18:15,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:15,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:15,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:15,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:15,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:15,746 INFO L87 Difference]: Start difference. First operand 1079 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 03:18:17,598 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 03:18:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:18,189 INFO L93 Difference]: Finished difference Result 1337 states and 3331 transitions. [2022-01-18 03:18:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:18:18,189 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 03:18:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:18,191 INFO L225 Difference]: With dead ends: 1337 [2022-01-18 03:18:18,191 INFO L226 Difference]: Without dead ends: 1187 [2022-01-18 03:18:18,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=2726, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:18:18,191 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 307 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:18,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2758 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 03:18:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-01-18 03:18:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1075. [2022-01-18 03:18:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.496275605214153) internal successors, (2681), 1074 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2681 transitions. [2022-01-18 03:18:18,201 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2681 transitions. Word has length 79 [2022-01-18 03:18:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:18,201 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2681 transitions. [2022-01-18 03:18:18,201 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 03:18:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2681 transitions. [2022-01-18 03:18:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:18,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:18,202 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 03:18:18,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-01-18 03:18:18,202 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1009078982, now seen corresponding path program 297 times [2022-01-18 03:18:18,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906610060] [2022-01-18 03:18:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:18,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:18,522 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 03:18:18,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:18,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906610060] [2022-01-18 03:18:18,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906610060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:18,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:18,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:18,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959930766] [2022-01-18 03:18:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:18,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:18,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:18,523 INFO L87 Difference]: Start difference. First operand 1075 states and 2681 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 03:18:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:20,752 INFO L93 Difference]: Finished difference Result 1350 states and 3360 transitions. [2022-01-18 03:18:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:18:20,752 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 03:18:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:20,753 INFO L225 Difference]: With dead ends: 1350 [2022-01-18 03:18:20,754 INFO L226 Difference]: Without dead ends: 1252 [2022-01-18 03:18:20,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=2928, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:18:20,754 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 350 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:20,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 2682 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 03:18:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-01-18 03:18:20,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1099. [2022-01-18 03:18:20,762 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 03:18:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2739 transitions. [2022-01-18 03:18:20,764 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2739 transitions. Word has length 79 [2022-01-18 03:18:20,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:20,764 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2739 transitions. [2022-01-18 03:18:20,764 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 03:18:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2739 transitions. [2022-01-18 03:18:20,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:20,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:20,765 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 03:18:20,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-01-18 03:18:20,765 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1969355422, now seen corresponding path program 298 times [2022-01-18 03:18:20,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:20,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921004347] [2022-01-18 03:18:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:20,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:21,065 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 03:18:21,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:21,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921004347] [2022-01-18 03:18:21,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921004347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:21,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:21,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:21,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285258014] [2022-01-18 03:18:21,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:21,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:21,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:21,066 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 03:18:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:22,516 INFO L93 Difference]: Finished difference Result 1333 states and 3307 transitions. [2022-01-18 03:18:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 03:18:22,517 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 03:18:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:22,518 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 03:18:22,518 INFO L226 Difference]: Without dead ends: 1174 [2022-01-18 03:18:22,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=2719, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:18:22,519 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 337 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:22,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2781 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:18:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-01-18 03:18:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1051. [2022-01-18 03:18:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.494285714285714) internal successors, (2619), 1050 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 03:18:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2619 transitions. [2022-01-18 03:18:22,528 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2619 transitions. Word has length 79 [2022-01-18 03:18:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:22,528 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2619 transitions. [2022-01-18 03:18:22,528 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 03:18:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2619 transitions. [2022-01-18 03:18:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:22,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:22,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:22,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-01-18 03:18:22,529 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:22,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash 614662184, now seen corresponding path program 299 times [2022-01-18 03:18:22,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:22,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597888895] [2022-01-18 03:18:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:22,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:22,842 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 03:18:22,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:22,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597888895] [2022-01-18 03:18:22,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597888895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:22,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:22,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:22,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242301042] [2022-01-18 03:18:22,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:22,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:22,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:22,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:22,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:22,843 INFO L87 Difference]: Start difference. First operand 1051 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 03:18:25,124 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 03:18:27,132 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 03:18:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:27,911 INFO L93 Difference]: Finished difference Result 1337 states and 3335 transitions. [2022-01-18 03:18:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:18:27,911 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 03:18:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:27,913 INFO L225 Difference]: With dead ends: 1337 [2022-01-18 03:18:27,913 INFO L226 Difference]: Without dead ends: 1207 [2022-01-18 03:18:27,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=2834, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:18:27,913 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 307 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:27,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 2811 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1087 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-01-18 03:18:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-18 03:18:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1071. [2022-01-18 03:18:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.491588785046729) internal successors, (2666), 1070 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 03:18:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2666 transitions. [2022-01-18 03:18:27,923 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2666 transitions. Word has length 79 [2022-01-18 03:18:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:27,923 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2666 transitions. [2022-01-18 03:18:27,923 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 03:18:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2666 transitions. [2022-01-18 03:18:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:27,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:27,924 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 03:18:27,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-01-18 03:18:27,924 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:27,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:27,924 INFO L85 PathProgramCache]: Analyzing trace with hash -238728982, now seen corresponding path program 300 times [2022-01-18 03:18:27,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:27,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419896471] [2022-01-18 03:18:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:27,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:28,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:28,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419896471] [2022-01-18 03:18:28,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419896471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:28,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:28,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:28,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407892846] [2022-01-18 03:18:28,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:28,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:28,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:28,262 INFO L87 Difference]: Start difference. First operand 1071 states and 2666 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 03:18:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:29,794 INFO L93 Difference]: Finished difference Result 1328 states and 3304 transitions. [2022-01-18 03:18:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 03:18:29,794 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 03:18:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:29,796 INFO L225 Difference]: With dead ends: 1328 [2022-01-18 03:18:29,796 INFO L226 Difference]: Without dead ends: 1230 [2022-01-18 03:18:29,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=3608, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:18:29,796 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 329 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:29,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2904 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:18:29,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-01-18 03:18:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1075. [2022-01-18 03:18:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.488826815642458) internal successors, (2673), 1074 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 03:18:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2673 transitions. [2022-01-18 03:18:29,805 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2673 transitions. Word has length 79 [2022-01-18 03:18:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:29,805 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2673 transitions. [2022-01-18 03:18:29,805 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 03:18:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2673 transitions. [2022-01-18 03:18:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:29,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:29,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:29,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-01-18 03:18:29,807 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:29,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:29,807 INFO L85 PathProgramCache]: Analyzing trace with hash 475508296, now seen corresponding path program 301 times [2022-01-18 03:18:29,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:29,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485048652] [2022-01-18 03:18:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:29,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:30,140 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 03:18:30,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:30,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485048652] [2022-01-18 03:18:30,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485048652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:30,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:30,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:30,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66665021] [2022-01-18 03:18:30,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:30,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:30,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:30,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:30,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:30,141 INFO L87 Difference]: Start difference. First operand 1075 states and 2673 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 03:18:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:31,790 INFO L93 Difference]: Finished difference Result 1311 states and 3255 transitions. [2022-01-18 03:18:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:18:31,790 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 03:18:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:31,791 INFO L225 Difference]: With dead ends: 1311 [2022-01-18 03:18:31,791 INFO L226 Difference]: Without dead ends: 1198 [2022-01-18 03:18:31,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=292, Invalid=3490, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:18:31,792 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 384 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:31,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 2712 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:18:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-01-18 03:18:31,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1063. [2022-01-18 03:18:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.493408662900188) internal successors, (2648), 1062 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2648 transitions. [2022-01-18 03:18:31,801 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2648 transitions. Word has length 79 [2022-01-18 03:18:31,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:31,801 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2648 transitions. [2022-01-18 03:18:31,802 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 03:18:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2648 transitions. [2022-01-18 03:18:31,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:31,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:31,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:31,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-01-18 03:18:31,803 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:31,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash 800956522, now seen corresponding path program 302 times [2022-01-18 03:18:31,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:31,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547828061] [2022-01-18 03:18:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:31,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:32,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:32,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547828061] [2022-01-18 03:18:32,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547828061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:32,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:32,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:32,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231209404] [2022-01-18 03:18:32,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:32,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:32,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:32,119 INFO L87 Difference]: Start difference. First operand 1063 states and 2648 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 03:18:34,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:18:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:35,356 INFO L93 Difference]: Finished difference Result 1317 states and 3276 transitions. [2022-01-18 03:18:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:18:35,356 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 03:18:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:35,358 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 03:18:35,358 INFO L226 Difference]: Without dead ends: 1167 [2022-01-18 03:18:35,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2830, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:18:35,358 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 291 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:35,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2924 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 03:18:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-01-18 03:18:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1059. [2022-01-18 03:18:35,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.492438563327032) internal successors, (2637), 1058 states have internal predecessors, (2637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2637 transitions. [2022-01-18 03:18:35,367 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2637 transitions. Word has length 79 [2022-01-18 03:18:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:35,367 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2637 transitions. [2022-01-18 03:18:35,367 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 03:18:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2637 transitions. [2022-01-18 03:18:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:35,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:35,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:35,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-01-18 03:18:35,368 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:35,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:35,369 INFO L85 PathProgramCache]: Analyzing trace with hash 94375558, now seen corresponding path program 303 times [2022-01-18 03:18:35,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:35,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532120999] [2022-01-18 03:18:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:35,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:35,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:35,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532120999] [2022-01-18 03:18:35,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532120999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:35,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:35,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:35,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260615524] [2022-01-18 03:18:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:35,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:35,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:35,683 INFO L87 Difference]: Start difference. First operand 1059 states and 2637 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 03:18:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:37,253 INFO L93 Difference]: Finished difference Result 1329 states and 3301 transitions. [2022-01-18 03:18:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:18:37,253 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 03:18:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:37,255 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 03:18:37,255 INFO L226 Difference]: Without dead ends: 1127 [2022-01-18 03:18:37,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=2939, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:18:37,256 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 359 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:37,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2709 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:18:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-18 03:18:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1035. [2022-01-18 03:18:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 2.490328820116054) internal successors, (2575), 1034 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2575 transitions. [2022-01-18 03:18:37,265 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2575 transitions. Word has length 79 [2022-01-18 03:18:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:37,265 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 2575 transitions. [2022-01-18 03:18:37,265 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 03:18:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2575 transitions. [2022-01-18 03:18:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:37,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:37,266 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 03:18:37,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-01-18 03:18:37,266 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:37,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1363674998, now seen corresponding path program 304 times [2022-01-18 03:18:37,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:37,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49962164] [2022-01-18 03:18:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:37,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:37,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:37,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49962164] [2022-01-18 03:18:37,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49962164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:37,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:37,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:37,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505589151] [2022-01-18 03:18:37,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:37,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:37,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:37,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:37,608 INFO L87 Difference]: Start difference. First operand 1035 states and 2575 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 03:18:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:39,047 INFO L93 Difference]: Finished difference Result 1317 states and 3280 transitions. [2022-01-18 03:18:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 03:18:39,047 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 03:18:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:39,048 INFO L225 Difference]: With dead ends: 1317 [2022-01-18 03:18:39,048 INFO L226 Difference]: Without dead ends: 1187 [2022-01-18 03:18:39,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=274, Invalid=3266, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 03:18:39,049 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 320 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:39,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 3059 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:18:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-01-18 03:18:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1059. [2022-01-18 03:18:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.488657844990548) internal successors, (2633), 1058 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:39,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2633 transitions. [2022-01-18 03:18:39,058 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2633 transitions. Word has length 79 [2022-01-18 03:18:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:39,058 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2633 transitions. [2022-01-18 03:18:39,058 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 03:18:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2633 transitions. [2022-01-18 03:18:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:39,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:39,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:39,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-01-18 03:18:39,059 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2077901132, now seen corresponding path program 305 times [2022-01-18 03:18:39,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:39,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639370883] [2022-01-18 03:18:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:39,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:39,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:39,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639370883] [2022-01-18 03:18:39,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639370883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:39,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:39,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:39,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166031193] [2022-01-18 03:18:39,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:39,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:39,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:39,390 INFO L87 Difference]: Start difference. First operand 1059 states and 2633 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 03:18:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:41,295 INFO L93 Difference]: Finished difference Result 1293 states and 3214 transitions. [2022-01-18 03:18:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:18:41,295 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 03:18:41,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:41,296 INFO L225 Difference]: With dead ends: 1293 [2022-01-18 03:18:41,296 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 03:18:41,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=229, Invalid=2527, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 03:18:41,297 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 287 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:41,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2809 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 03:18:41,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 03:18:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1063. [2022-01-18 03:18:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 2.4858757062146895) internal successors, (2640), 1062 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 2640 transitions. [2022-01-18 03:18:41,306 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 2640 transitions. Word has length 79 [2022-01-18 03:18:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:41,306 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 2640 transitions. [2022-01-18 03:18:41,306 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 03:18:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 2640 transitions. [2022-01-18 03:18:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:41,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:41,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:41,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-01-18 03:18:41,308 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1502828886, now seen corresponding path program 306 times [2022-01-18 03:18:41,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:41,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704777555] [2022-01-18 03:18:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:41,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:41,643 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 03:18:41,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:41,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704777555] [2022-01-18 03:18:41,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704777555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:41,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:41,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:41,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686541364] [2022-01-18 03:18:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:41,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:41,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:41,644 INFO L87 Difference]: Start difference. First operand 1063 states and 2640 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 03:18:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:43,882 INFO L93 Difference]: Finished difference Result 1291 states and 3200 transitions. [2022-01-18 03:18:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:18:43,882 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 03:18:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:43,883 INFO L225 Difference]: With dead ends: 1291 [2022-01-18 03:18:43,883 INFO L226 Difference]: Without dead ends: 1178 [2022-01-18 03:18:43,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=2430, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:18:43,884 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:43,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 2966 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 03:18:43,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-01-18 03:18:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1051. [2022-01-18 03:18:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 2.4904761904761905) internal successors, (2615), 1050 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2615 transitions. [2022-01-18 03:18:43,893 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2615 transitions. Word has length 79 [2022-01-18 03:18:43,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:43,893 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 2615 transitions. [2022-01-18 03:18:43,893 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 03:18:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2615 transitions. [2022-01-18 03:18:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:43,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:43,894 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 03:18:43,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-01-18 03:18:43,894 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:43,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1177380660, now seen corresponding path program 307 times [2022-01-18 03:18:43,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:43,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183275367] [2022-01-18 03:18:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:43,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:44,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:44,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183275367] [2022-01-18 03:18:44,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183275367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:44,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:44,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:44,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793083439] [2022-01-18 03:18:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:44,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:44,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:44,257 INFO L87 Difference]: Start difference. First operand 1051 states and 2615 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 03:18:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:45,696 INFO L93 Difference]: Finished difference Result 1297 states and 3221 transitions. [2022-01-18 03:18:45,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:18:45,697 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 03:18:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:45,698 INFO L225 Difference]: With dead ends: 1297 [2022-01-18 03:18:45,698 INFO L226 Difference]: Without dead ends: 1147 [2022-01-18 03:18:45,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=251, Invalid=2941, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:18:45,699 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 303 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:45,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 3072 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:18:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-01-18 03:18:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1047. [2022-01-18 03:18:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.4894837476099427) internal successors, (2604), 1046 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2604 transitions. [2022-01-18 03:18:45,708 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2604 transitions. Word has length 79 [2022-01-18 03:18:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:45,709 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2604 transitions. [2022-01-18 03:18:45,709 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 03:18:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2604 transitions. [2022-01-18 03:18:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:45,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:45,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:45,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-01-18 03:18:45,710 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1883961624, now seen corresponding path program 308 times [2022-01-18 03:18:45,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:45,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566134442] [2022-01-18 03:18:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:45,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:46,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:46,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566134442] [2022-01-18 03:18:46,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566134442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:46,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:46,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:46,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944113859] [2022-01-18 03:18:46,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:46,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:46,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:46,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:46,062 INFO L87 Difference]: Start difference. First operand 1047 states and 2604 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 03:18:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:47,584 INFO L93 Difference]: Finished difference Result 1321 states and 3279 transitions. [2022-01-18 03:18:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 03:18:47,584 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 03:18:47,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:47,586 INFO L225 Difference]: With dead ends: 1321 [2022-01-18 03:18:47,586 INFO L226 Difference]: Without dead ends: 1135 [2022-01-18 03:18:47,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=268, Invalid=3272, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 03:18:47,586 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 328 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:47,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 3106 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:18:47,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-01-18 03:18:47,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1039. [2022-01-18 03:18:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 1038 states have (on average 2.48747591522158) internal successors, (2582), 1038 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 03:18:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 2582 transitions. [2022-01-18 03:18:47,596 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 2582 transitions. Word has length 79 [2022-01-18 03:18:47,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:47,596 INFO L470 AbstractCegarLoop]: Abstraction has 1039 states and 2582 transitions. [2022-01-18 03:18:47,596 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 03:18:47,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 2582 transitions. [2022-01-18 03:18:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:47,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:47,597 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 03:18:47,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-01-18 03:18:47,597 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash 60251718, now seen corresponding path program 309 times [2022-01-18 03:18:47,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:47,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128655213] [2022-01-18 03:18:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:47,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:47,944 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 03:18:47,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:47,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128655213] [2022-01-18 03:18:47,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128655213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:47,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:47,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:18:47,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125316541] [2022-01-18 03:18:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:47,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:18:47,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:47,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:18:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:18:47,945 INFO L87 Difference]: Start difference. First operand 1039 states and 2582 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 03:18:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:49,544 INFO L93 Difference]: Finished difference Result 1325 states and 3282 transitions. [2022-01-18 03:18:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:18:49,544 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 03:18:49,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:49,546 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 03:18:49,546 INFO L226 Difference]: Without dead ends: 1115 [2022-01-18 03:18:49,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=2944, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:18:49,546 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 327 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:49,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 3028 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:18:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-18 03:18:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1023. [2022-01-18 03:18:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 2.4951076320939336) internal successors, (2550), 1022 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 2550 transitions. [2022-01-18 03:18:49,555 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 2550 transitions. Word has length 79 [2022-01-18 03:18:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:49,555 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 2550 transitions. [2022-01-18 03:18:49,555 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 03:18:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 2550 transitions. [2022-01-18 03:18:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:49,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:49,556 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 03:18:49,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-01-18 03:18:49,556 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:49,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1245773446, now seen corresponding path program 310 times [2022-01-18 03:18:49,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:49,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962619640] [2022-01-18 03:18:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:49,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:49,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:49,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962619640] [2022-01-18 03:18:49,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962619640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:49,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:49,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:49,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938064569] [2022-01-18 03:18:49,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:49,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:49,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:49,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:49,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:49,877 INFO L87 Difference]: Start difference. First operand 1023 states and 2550 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 03:18:51,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:51,644 INFO L93 Difference]: Finished difference Result 1333 states and 3332 transitions. [2022-01-18 03:18:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:18:51,645 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 03:18:51,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:51,646 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 03:18:51,646 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 03:18:51,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 03:18:51,647 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 326 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:51,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 2997 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:18:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 03:18:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1083. [2022-01-18 03:18:51,655 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 03:18:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2707 transitions. [2022-01-18 03:18:51,656 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2707 transitions. Word has length 79 [2022-01-18 03:18:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:51,656 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2707 transitions. [2022-01-18 03:18:51,656 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 03:18:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2707 transitions. [2022-01-18 03:18:51,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:51,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:51,657 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 03:18:51,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-01-18 03:18:51,657 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:51,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash 392382280, now seen corresponding path program 311 times [2022-01-18 03:18:51,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:51,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685236186] [2022-01-18 03:18:51,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:51,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:51,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:51,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685236186] [2022-01-18 03:18:51,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685236186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:51,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:51,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:51,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295586583] [2022-01-18 03:18:51,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:51,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:51,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:51,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:51,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:51,974 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 03:18:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:53,504 INFO L93 Difference]: Finished difference Result 1332 states and 3323 transitions. [2022-01-18 03:18:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:18:53,505 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 03:18:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:53,506 INFO L225 Difference]: With dead ends: 1332 [2022-01-18 03:18:53,506 INFO L226 Difference]: Without dead ends: 1234 [2022-01-18 03:18:53,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:18:53,507 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 287 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:53,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 3114 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:18:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-01-18 03:18:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1087. [2022-01-18 03:18:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.4990791896869244) internal successors, (2714), 1086 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2714 transitions. [2022-01-18 03:18:53,516 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2714 transitions. Word has length 79 [2022-01-18 03:18:53,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:53,517 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2714 transitions. [2022-01-18 03:18:53,517 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 03:18:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2714 transitions. [2022-01-18 03:18:53,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:53,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:53,518 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 03:18:53,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-01-18 03:18:53,518 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1106619558, now seen corresponding path program 312 times [2022-01-18 03:18:53,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:53,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559550539] [2022-01-18 03:18:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:53,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:53,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:53,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559550539] [2022-01-18 03:18:53,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559550539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:53,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:53,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:53,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480111646] [2022-01-18 03:18:53,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:53,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:53,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:53,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:53,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:53,845 INFO L87 Difference]: Start difference. First operand 1087 states and 2714 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 03:18:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:55,943 INFO L93 Difference]: Finished difference Result 1315 states and 3274 transitions. [2022-01-18 03:18:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:18:55,943 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 03:18:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:55,945 INFO L225 Difference]: With dead ends: 1315 [2022-01-18 03:18:55,945 INFO L226 Difference]: Without dead ends: 1202 [2022-01-18 03:18:55,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:18:55,946 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 363 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:55,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 2919 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 03:18:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-01-18 03:18:55,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1075. [2022-01-18 03:18:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.496275605214153) internal successors, (2681), 1074 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2681 transitions. [2022-01-18 03:18:55,956 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2681 transitions. Word has length 79 [2022-01-18 03:18:55,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:55,956 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2681 transitions. [2022-01-18 03:18:55,956 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 03:18:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2681 transitions. [2022-01-18 03:18:55,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:55,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:55,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:18:55,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-01-18 03:18:55,957 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1432067784, now seen corresponding path program 313 times [2022-01-18 03:18:55,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:55,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971835211] [2022-01-18 03:18:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:55,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:56,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:56,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971835211] [2022-01-18 03:18:56,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971835211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:56,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:56,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:18:56,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698725127] [2022-01-18 03:18:56,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:56,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:18:56,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:18:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:18:56,289 INFO L87 Difference]: Start difference. First operand 1075 states and 2681 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 03:18:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:18:58,477 INFO L93 Difference]: Finished difference Result 1309 states and 3254 transitions. [2022-01-18 03:18:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:18:58,478 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 03:18:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:18:58,479 INFO L225 Difference]: With dead ends: 1309 [2022-01-18 03:18:58,479 INFO L226 Difference]: Without dead ends: 1159 [2022-01-18 03:18:58,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=2821, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:18:58,479 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 303 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:18:58,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 3016 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 03:18:58,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-01-18 03:18:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1071. [2022-01-18 03:18:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4953271028037385) internal successors, (2670), 1070 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:18:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2670 transitions. [2022-01-18 03:18:58,488 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2670 transitions. Word has length 79 [2022-01-18 03:18:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:18:58,488 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2670 transitions. [2022-01-18 03:18:58,488 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 03:18:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2670 transitions. [2022-01-18 03:18:58,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:18:58,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:18:58,489 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 03:18:58,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-01-18 03:18:58,490 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:18:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:18:58,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2001317178, now seen corresponding path program 314 times [2022-01-18 03:18:58,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:18:58,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537647582] [2022-01-18 03:18:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:18:58,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:18:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:18:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:18:58,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:18:58,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537647582] [2022-01-18 03:18:58,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537647582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:18:58,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:18:58,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:18:58,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559992381] [2022-01-18 03:18:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:18:58,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:18:58,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:18:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:18:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:18:58,803 INFO L87 Difference]: Start difference. First operand 1071 states and 2670 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 03:19:01,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:19:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:02,653 INFO L93 Difference]: Finished difference Result 1314 states and 3261 transitions. [2022-01-18 03:19:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:19:02,653 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 03:19:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:02,655 INFO L225 Difference]: With dead ends: 1314 [2022-01-18 03:19:02,655 INFO L226 Difference]: Without dead ends: 1216 [2022-01-18 03:19:02,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=256, Invalid=2500, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 03:19:02,655 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 315 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:02,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2678 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-18 03:19:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-01-18 03:19:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1095. [2022-01-18 03:19:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 2.493601462522852) internal successors, (2728), 1094 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 03:19:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2728 transitions. [2022-01-18 03:19:02,665 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2728 transitions. Word has length 79 [2022-01-18 03:19:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:02,666 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2728 transitions. [2022-01-18 03:19:02,666 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 03:19:02,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2728 transitions. [2022-01-18 03:19:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:02,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:02,667 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 03:19:02,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-01-18 03:19:02,667 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash -684784286, now seen corresponding path program 315 times [2022-01-18 03:19:02,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:02,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335364639] [2022-01-18 03:19:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:02,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:02,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:02,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335364639] [2022-01-18 03:19:02,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335364639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:02,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:02,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:02,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165211392] [2022-01-18 03:19:02,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:02,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:02,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:02,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:02,961 INFO L87 Difference]: Start difference. First operand 1095 states and 2728 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 03:19:04,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:04,380 INFO L93 Difference]: Finished difference Result 1282 states and 3173 transitions. [2022-01-18 03:19:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:19:04,380 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 03:19:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:04,382 INFO L225 Difference]: With dead ends: 1282 [2022-01-18 03:19:04,382 INFO L226 Difference]: Without dead ends: 1123 [2022-01-18 03:19:04,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:19:04,382 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 268 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:04,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2741 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:19:04,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-01-18 03:19:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1047. [2022-01-18 03:19:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.4933078393881454) internal successors, (2608), 1046 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 03:19:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2608 transitions. [2022-01-18 03:19:04,398 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2608 transitions. Word has length 79 [2022-01-18 03:19:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:04,398 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2608 transitions. [2022-01-18 03:19:04,398 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 03:19:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2608 transitions. [2022-01-18 03:19:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:04,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:04,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:04,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-01-18 03:19:04,399 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:04,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1587384008, now seen corresponding path program 316 times [2022-01-18 03:19:04,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714785954] [2022-01-18 03:19:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:04,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:04,713 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 03:19:04,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:04,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714785954] [2022-01-18 03:19:04,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714785954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:04,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:04,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:04,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784876978] [2022-01-18 03:19:04,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:04,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:04,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:04,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:04,728 INFO L87 Difference]: Start difference. First operand 1047 states and 2608 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 03:19:06,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:06,715 INFO L93 Difference]: Finished difference Result 1277 states and 3174 transitions. [2022-01-18 03:19:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:19:06,715 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 03:19:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:06,716 INFO L225 Difference]: With dead ends: 1277 [2022-01-18 03:19:06,716 INFO L226 Difference]: Without dead ends: 1163 [2022-01-18 03:19:06,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:19:06,717 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 321 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:06,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 2467 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 03:19:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-01-18 03:19:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1071. [2022-01-18 03:19:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.4953271028037385) internal successors, (2670), 1070 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 2670 transitions. [2022-01-18 03:19:06,727 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2670 transitions. Word has length 79 [2022-01-18 03:19:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:06,727 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 2670 transitions. [2022-01-18 03:19:06,727 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 03:19:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2670 transitions. [2022-01-18 03:19:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:06,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:06,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:06,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-01-18 03:19:06,728 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1220489578, now seen corresponding path program 317 times [2022-01-18 03:19:06,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:06,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420010279] [2022-01-18 03:19:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:06,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:07,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:07,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420010279] [2022-01-18 03:19:07,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420010279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:07,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:07,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:07,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600045309] [2022-01-18 03:19:07,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:07,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:07,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:07,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:07,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:07,045 INFO L87 Difference]: Start difference. First operand 1071 states and 2670 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 03:19:09,325 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 03:19:10,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:19:12,469 WARN L534 Checker$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 03:19:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:13,481 INFO L93 Difference]: Finished difference Result 1288 states and 3198 transitions. [2022-01-18 03:19:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:19:13,482 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 03:19:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:13,483 INFO L225 Difference]: With dead ends: 1288 [2022-01-18 03:19:13,483 INFO L226 Difference]: Without dead ends: 1190 [2022-01-18 03:19:13,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:19:13,484 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 271 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:13,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 2663 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1035 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-01-18 03:19:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-01-18 03:19:13,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1075. [2022-01-18 03:19:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 2.492551210428305) internal successors, (2677), 1074 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 03:19:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 2677 transitions. [2022-01-18 03:19:13,499 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 2677 transitions. Word has length 79 [2022-01-18 03:19:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:13,499 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 2677 transitions. [2022-01-18 03:19:13,499 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 03:19:13,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 2677 transitions. [2022-01-18 03:19:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:13,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:13,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:13,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-01-18 03:19:13,500 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1934726856, now seen corresponding path program 318 times [2022-01-18 03:19:13,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:13,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464938195] [2022-01-18 03:19:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:13,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:13,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:13,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464938195] [2022-01-18 03:19:13,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464938195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:13,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:13,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:13,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730319359] [2022-01-18 03:19:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:13,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:13,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:13,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:13,814 INFO L87 Difference]: Start difference. First operand 1075 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 03:19:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:15,384 INFO L93 Difference]: Finished difference Result 1256 states and 3114 transitions. [2022-01-18 03:19:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:19:15,384 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 03:19:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:15,385 INFO L225 Difference]: With dead ends: 1256 [2022-01-18 03:19:15,385 INFO L226 Difference]: Without dead ends: 1147 [2022-01-18 03:19:15,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:19:15,386 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 298 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:15,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 2585 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:19:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-01-18 03:19:15,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1067. [2022-01-18 03:19:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.4943714821763603) internal successors, (2659), 1066 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 03:19:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2659 transitions. [2022-01-18 03:19:15,395 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2659 transitions. Word has length 79 [2022-01-18 03:19:15,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:15,395 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2659 transitions. [2022-01-18 03:19:15,395 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 03:19:15,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2659 transitions. [2022-01-18 03:19:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:15,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:15,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:15,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-01-18 03:19:15,396 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1889549626, now seen corresponding path program 319 times [2022-01-18 03:19:15,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:15,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362560779] [2022-01-18 03:19:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:15,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:15,704 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 03:19:15,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:15,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362560779] [2022-01-18 03:19:15,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362560779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:15,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:15,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:15,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682937802] [2022-01-18 03:19:15,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:15,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:15,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:15,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:15,705 INFO L87 Difference]: Start difference. First operand 1067 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 03:19:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:17,595 INFO L93 Difference]: Finished difference Result 1310 states and 3250 transitions. [2022-01-18 03:19:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:19:17,596 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 03:19:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:17,597 INFO L225 Difference]: With dead ends: 1310 [2022-01-18 03:19:17,597 INFO L226 Difference]: Without dead ends: 1212 [2022-01-18 03:19:17,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 03:19:17,598 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 291 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:17,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2734 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:19:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-01-18 03:19:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1091. [2022-01-18 03:19:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 2.492660550458716) internal successors, (2717), 1090 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 03:19:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 2717 transitions. [2022-01-18 03:19:17,614 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 2717 transitions. Word has length 79 [2022-01-18 03:19:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:17,614 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 2717 transitions. [2022-01-18 03:19:17,614 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 03:19:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 2717 transitions. [2022-01-18 03:19:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:17,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:17,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:17,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-01-18 03:19:17,616 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash -573016734, now seen corresponding path program 320 times [2022-01-18 03:19:17,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:17,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823681943] [2022-01-18 03:19:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:17,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:17,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:17,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823681943] [2022-01-18 03:19:17,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823681943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:17,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:17,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:17,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109736151] [2022-01-18 03:19:17,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:17,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:17,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:17,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:17,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:17,916 INFO L87 Difference]: Start difference. First operand 1091 states and 2717 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 03:19:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:19,179 INFO L93 Difference]: Finished difference Result 1278 states and 3162 transitions. [2022-01-18 03:19:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:19:19,179 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 03:19:19,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:19,181 INFO L225 Difference]: With dead ends: 1278 [2022-01-18 03:19:19,181 INFO L226 Difference]: Without dead ends: 1135 [2022-01-18 03:19:19,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:19:19,181 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 291 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:19,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2584 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:19:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-01-18 03:19:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1059. [2022-01-18 03:19:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 2.492438563327032) internal successors, (2637), 1058 states have internal predecessors, (2637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2637 transitions. [2022-01-18 03:19:19,191 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2637 transitions. Word has length 79 [2022-01-18 03:19:19,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:19,191 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 2637 transitions. [2022-01-18 03:19:19,191 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 03:19:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2637 transitions. [2022-01-18 03:19:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:19,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:19,192 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 03:19:19,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-01-18 03:19:19,192 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1055665756, now seen corresponding path program 321 times [2022-01-18 03:19:19,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:19,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506892137] [2022-01-18 03:19:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:19,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:19,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:19,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506892137] [2022-01-18 03:19:19,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506892137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:19,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:19,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:19:19,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126963885] [2022-01-18 03:19:19,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:19,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:19:19,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:19:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:19:19,518 INFO L87 Difference]: Start difference. First operand 1059 states and 2637 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 03:19:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:20,996 INFO L93 Difference]: Finished difference Result 1338 states and 3323 transitions. [2022-01-18 03:19:20,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 03:19:20,997 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 03:19:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:20,998 INFO L225 Difference]: With dead ends: 1338 [2022-01-18 03:19:20,998 INFO L226 Difference]: Without dead ends: 1240 [2022-01-18 03:19:20,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:19:20,998 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 291 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:20,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 2890 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:19:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-01-18 03:19:21,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1087. [2022-01-18 03:19:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 2.4917127071823204) internal successors, (2706), 1086 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2706 transitions. [2022-01-18 03:19:21,008 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2706 transitions. Word has length 79 [2022-01-18 03:19:21,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:21,008 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2706 transitions. [2022-01-18 03:19:21,008 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 03:19:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2706 transitions. [2022-01-18 03:19:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:21,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:21,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:21,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-01-18 03:19:21,009 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:21,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash 260867136, now seen corresponding path program 322 times [2022-01-18 03:19:21,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:21,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722184970] [2022-01-18 03:19:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:21,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:21,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:21,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722184970] [2022-01-18 03:19:21,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722184970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:21,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:21,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:19:21,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027177820] [2022-01-18 03:19:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:21,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:19:21,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:19:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:19:21,323 INFO L87 Difference]: Start difference. First operand 1087 states and 2706 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 03:19:25,392 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 03:19:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:26,179 INFO L93 Difference]: Finished difference Result 1374 states and 3398 transitions. [2022-01-18 03:19:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:19:26,179 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 03:19:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:26,181 INFO L225 Difference]: With dead ends: 1374 [2022-01-18 03:19:26,181 INFO L226 Difference]: Without dead ends: 1239 [2022-01-18 03:19:26,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 03:19:26,181 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 368 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:26,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 2774 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1069 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-01-18 03:19:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-01-18 03:19:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1143. [2022-01-18 03:19:26,191 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 03:19:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2836 transitions. [2022-01-18 03:19:26,192 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2836 transitions. Word has length 79 [2022-01-18 03:19:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:26,192 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2836 transitions. [2022-01-18 03:19:26,192 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 03:19:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2836 transitions. [2022-01-18 03:19:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:26,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:26,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:26,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-01-18 03:19:26,193 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -869647894, now seen corresponding path program 323 times [2022-01-18 03:19:26,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:26,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869012256] [2022-01-18 03:19:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:26,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:26,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:26,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869012256] [2022-01-18 03:19:26,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869012256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:26,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:26,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:26,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270145002] [2022-01-18 03:19:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:26,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:26,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:26,512 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 03:19:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:28,001 INFO L93 Difference]: Finished difference Result 1385 states and 3418 transitions. [2022-01-18 03:19:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:19:28,001 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 03:19:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:28,003 INFO L225 Difference]: With dead ends: 1385 [2022-01-18 03:19:28,003 INFO L226 Difference]: Without dead ends: 1199 [2022-01-18 03:19:28,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:19:28,003 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 300 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:28,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2852 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:19:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-01-18 03:19:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1123. [2022-01-18 03:19:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.4750445632798574) internal successors, (2777), 1122 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2777 transitions. [2022-01-18 03:19:28,012 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2777 transitions. Word has length 79 [2022-01-18 03:19:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:28,012 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2777 transitions. [2022-01-18 03:19:28,012 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 03:19:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2777 transitions. [2022-01-18 03:19:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:28,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:28,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:28,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-01-18 03:19:28,014 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:28,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:28,014 INFO L85 PathProgramCache]: Analyzing trace with hash -427957876, now seen corresponding path program 324 times [2022-01-18 03:19:28,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:28,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725930992] [2022-01-18 03:19:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:28,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:28,324 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 03:19:28,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:28,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725930992] [2022-01-18 03:19:28,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725930992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:28,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:28,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:28,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440598387] [2022-01-18 03:19:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:28,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:28,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:28,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:28,325 INFO L87 Difference]: Start difference. First operand 1123 states and 2777 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 03:19:29,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:29,987 INFO L93 Difference]: Finished difference Result 1394 states and 3441 transitions. [2022-01-18 03:19:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:19:29,987 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 03:19:29,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:29,989 INFO L225 Difference]: With dead ends: 1394 [2022-01-18 03:19:29,989 INFO L226 Difference]: Without dead ends: 1296 [2022-01-18 03:19:29,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=262, Invalid=2708, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:19:29,989 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 304 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:29,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2688 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:19:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-01-18 03:19:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1143. [2022-01-18 03:19:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4798598949211907) internal successors, (2832), 1142 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 03:19:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2832 transitions. [2022-01-18 03:19:30,000 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2832 transitions. Word has length 79 [2022-01-18 03:19:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:30,000 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2832 transitions. [2022-01-18 03:19:30,000 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 03:19:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2832 transitions. [2022-01-18 03:19:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:30,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:30,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:30,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-01-18 03:19:30,001 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:30,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:30,001 INFO L85 PathProgramCache]: Analyzing trace with hash 888575016, now seen corresponding path program 325 times [2022-01-18 03:19:30,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:30,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725967612] [2022-01-18 03:19:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:30,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:30,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:30,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725967612] [2022-01-18 03:19:30,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725967612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:30,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:30,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:30,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442729248] [2022-01-18 03:19:30,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:30,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:30,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:30,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:30,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:30,298 INFO L87 Difference]: Start difference. First operand 1143 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 03:19:34,648 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 03:19:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:35,083 INFO L93 Difference]: Finished difference Result 1350 states and 3324 transitions. [2022-01-18 03:19:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:19:35,084 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 03:19:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:35,085 INFO L225 Difference]: With dead ends: 1350 [2022-01-18 03:19:35,085 INFO L226 Difference]: Without dead ends: 1215 [2022-01-18 03:19:35,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=2611, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:19:35,085 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 337 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:35,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 2557 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 994 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-01-18 03:19:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-01-18 03:19:35,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1135. [2022-01-18 03:19:35,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.4744268077601412) internal successors, (2806), 1134 states have internal predecessors, (2806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2806 transitions. [2022-01-18 03:19:35,095 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2806 transitions. Word has length 79 [2022-01-18 03:19:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:35,095 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2806 transitions. [2022-01-18 03:19:35,095 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 03:19:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2806 transitions. [2022-01-18 03:19:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:35,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:35,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:35,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-01-18 03:19:35,096 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash -241940014, now seen corresponding path program 326 times [2022-01-18 03:19:35,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:35,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425070781] [2022-01-18 03:19:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:35,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:35,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:35,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425070781] [2022-01-18 03:19:35,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425070781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:35,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:35,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:19:35,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762140462] [2022-01-18 03:19:35,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:35,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:19:35,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:19:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:19:35,393 INFO L87 Difference]: Start difference. First operand 1135 states and 2806 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 03:19:38,150 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 03:19:38,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:38,696 INFO L93 Difference]: Finished difference Result 1373 states and 3377 transitions. [2022-01-18 03:19:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:19:38,696 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 03:19:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:38,697 INFO L225 Difference]: With dead ends: 1373 [2022-01-18 03:19:38,697 INFO L226 Difference]: Without dead ends: 1211 [2022-01-18 03:19:38,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:19:38,698 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 338 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:38,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 2520 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 902 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 03:19:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-01-18 03:19:38,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1143. [2022-01-18 03:19:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 2.4728546409807355) internal successors, (2824), 1142 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2824 transitions. [2022-01-18 03:19:38,708 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2824 transitions. Word has length 79 [2022-01-18 03:19:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:38,708 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2824 transitions. [2022-01-18 03:19:38,708 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 03:19:38,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2824 transitions. [2022-01-18 03:19:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:38,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:38,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:38,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-01-18 03:19:38,709 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash 150604966, now seen corresponding path program 327 times [2022-01-18 03:19:38,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:38,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318514639] [2022-01-18 03:19:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:38,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:39,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:39,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318514639] [2022-01-18 03:19:39,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318514639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:39,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:39,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:19:39,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571899667] [2022-01-18 03:19:39,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:39,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:19:39,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:19:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:19:39,010 INFO L87 Difference]: Start difference. First operand 1143 states and 2824 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 03:19:40,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:40,183 INFO L93 Difference]: Finished difference Result 1470 states and 3625 transitions. [2022-01-18 03:19:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:19:40,183 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 03:19:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:40,185 INFO L225 Difference]: With dead ends: 1470 [2022-01-18 03:19:40,185 INFO L226 Difference]: Without dead ends: 1218 [2022-01-18 03:19:40,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:19:40,185 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 316 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:40,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2359 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:19:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-01-18 03:19:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1151. [2022-01-18 03:19:40,200 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 03:19:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2854 transitions. [2022-01-18 03:19:40,201 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2854 transitions. Word has length 79 [2022-01-18 03:19:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:40,201 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2854 transitions. [2022-01-18 03:19:40,201 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 03:19:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2854 transitions. [2022-01-18 03:19:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:40,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:40,202 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 03:19:40,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-01-18 03:19:40,202 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:40,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:40,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1841936478, now seen corresponding path program 328 times [2022-01-18 03:19:40,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:40,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063463305] [2022-01-18 03:19:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:40,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:40,509 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 03:19:40,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:40,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063463305] [2022-01-18 03:19:40,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063463305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:40,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:40,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:19:40,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944563710] [2022-01-18 03:19:40,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:40,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:19:40,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:40,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:19:40,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:19:40,510 INFO L87 Difference]: Start difference. First operand 1151 states and 2854 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 03:19:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:42,371 INFO L93 Difference]: Finished difference Result 1540 states and 3838 transitions. [2022-01-18 03:19:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 03:19:42,372 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 03:19:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:42,373 INFO L225 Difference]: With dead ends: 1540 [2022-01-18 03:19:42,373 INFO L226 Difference]: Without dead ends: 1365 [2022-01-18 03:19:42,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=3582, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:19:42,374 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 328 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:42,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 2886 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:19:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-01-18 03:19:42,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1203. [2022-01-18 03:19:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.4966722129783694) internal successors, (3001), 1202 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3001 transitions. [2022-01-18 03:19:42,385 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3001 transitions. Word has length 79 [2022-01-18 03:19:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:42,385 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 3001 transitions. [2022-01-18 03:19:42,385 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 03:19:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3001 transitions. [2022-01-18 03:19:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:42,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:42,386 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 03:19:42,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-01-18 03:19:42,387 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1950223668, now seen corresponding path program 329 times [2022-01-18 03:19:42,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:42,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795423143] [2022-01-18 03:19:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:42,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:42,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:42,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795423143] [2022-01-18 03:19:42,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795423143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:42,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:42,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:19:42,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247301994] [2022-01-18 03:19:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:42,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:19:42,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:19:42,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:19:42,686 INFO L87 Difference]: Start difference. First operand 1203 states and 3001 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 03:19:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:44,635 INFO L93 Difference]: Finished difference Result 1468 states and 3644 transitions. [2022-01-18 03:19:44,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:19:44,635 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 03:19:44,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:44,637 INFO L225 Difference]: With dead ends: 1468 [2022-01-18 03:19:44,637 INFO L226 Difference]: Without dead ends: 1258 [2022-01-18 03:19:44,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=2313, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:19:44,637 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 341 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:44,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2302 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 03:19:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-01-18 03:19:44,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1163. [2022-01-18 03:19:44,647 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 03:19:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2915 transitions. [2022-01-18 03:19:44,648 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2915 transitions. Word has length 79 [2022-01-18 03:19:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:44,648 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2915 transitions. [2022-01-18 03:19:44,648 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 03:19:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2915 transitions. [2022-01-18 03:19:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:44,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:44,649 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 03:19:44,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-01-18 03:19:44,650 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1480656586, now seen corresponding path program 330 times [2022-01-18 03:19:44,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:44,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369373898] [2022-01-18 03:19:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:44,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:44,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:44,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369373898] [2022-01-18 03:19:44,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369373898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:44,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:44,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:44,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745700431] [2022-01-18 03:19:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:44,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:44,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:44,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:44,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:44,957 INFO L87 Difference]: Start difference. First operand 1163 states and 2915 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 03:19:46,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:46,217 INFO L93 Difference]: Finished difference Result 1441 states and 3609 transitions. [2022-01-18 03:19:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:19:46,218 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 03:19:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:46,219 INFO L225 Difference]: With dead ends: 1441 [2022-01-18 03:19:46,219 INFO L226 Difference]: Without dead ends: 1311 [2022-01-18 03:19:46,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:19:46,220 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 267 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:46,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 2549 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:19:46,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-01-18 03:19:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1211. [2022-01-18 03:19:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5115702479338844) internal successors, (3039), 1210 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3039 transitions. [2022-01-18 03:19:46,231 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3039 transitions. Word has length 79 [2022-01-18 03:19:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:46,231 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3039 transitions. [2022-01-18 03:19:46,231 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 03:19:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3039 transitions. [2022-01-18 03:19:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:46,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:46,232 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 03:19:46,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-01-18 03:19:46,233 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:46,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash 627265420, now seen corresponding path program 331 times [2022-01-18 03:19:46,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:46,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212551035] [2022-01-18 03:19:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:46,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:46,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:46,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212551035] [2022-01-18 03:19:46,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212551035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:46,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:46,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:19:46,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693890517] [2022-01-18 03:19:46,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:46,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:19:46,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:19:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:19:46,559 INFO L87 Difference]: Start difference. First operand 1211 states and 3039 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 03:19:47,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:47,981 INFO L93 Difference]: Finished difference Result 1452 states and 3629 transitions. [2022-01-18 03:19:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:19:47,981 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 03:19:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:47,983 INFO L225 Difference]: With dead ends: 1452 [2022-01-18 03:19:47,983 INFO L226 Difference]: Without dead ends: 1354 [2022-01-18 03:19:47,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=271, Invalid=2921, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:19:47,983 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 347 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:47,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2598 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:19:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-01-18 03:19:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1215. [2022-01-18 03:19:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 2.5090609555189456) internal successors, (3046), 1214 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 3046 transitions. [2022-01-18 03:19:47,994 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 3046 transitions. Word has length 79 [2022-01-18 03:19:47,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:47,994 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 3046 transitions. [2022-01-18 03:19:47,994 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 03:19:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 3046 transitions. [2022-01-18 03:19:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:47,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:47,995 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 03:19:47,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-01-18 03:19:47,996 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1341502698, now seen corresponding path program 332 times [2022-01-18 03:19:47,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:47,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261846596] [2022-01-18 03:19:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:47,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:48,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:48,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261846596] [2022-01-18 03:19:48,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261846596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:48,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:48,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:19:48,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861228865] [2022-01-18 03:19:48,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:48,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:19:48,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:19:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:19:48,356 INFO L87 Difference]: Start difference. First operand 1215 states and 3046 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 03:19:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:50,142 INFO L93 Difference]: Finished difference Result 1435 states and 3580 transitions. [2022-01-18 03:19:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:19:50,143 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 03:19:50,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:50,144 INFO L225 Difference]: With dead ends: 1435 [2022-01-18 03:19:50,144 INFO L226 Difference]: Without dead ends: 1322 [2022-01-18 03:19:50,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=2816, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:19:50,145 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 331 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:50,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 2728 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:19:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-01-18 03:19:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1203. [2022-01-18 03:19:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.5066555740432612) internal successors, (3013), 1202 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3013 transitions. [2022-01-18 03:19:50,155 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3013 transitions. Word has length 79 [2022-01-18 03:19:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:50,155 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 3013 transitions. [2022-01-18 03:19:50,155 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 03:19:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3013 transitions. [2022-01-18 03:19:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:50,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:50,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:50,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-01-18 03:19:50,156 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1666950924, now seen corresponding path program 333 times [2022-01-18 03:19:50,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:50,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700453313] [2022-01-18 03:19:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:50,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:50,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:50,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700453313] [2022-01-18 03:19:50,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700453313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:50,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:50,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:50,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244792218] [2022-01-18 03:19:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:50,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:50,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:50,482 INFO L87 Difference]: Start difference. First operand 1203 states and 3013 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 03:19:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:51,584 INFO L93 Difference]: Finished difference Result 1413 states and 3520 transitions. [2022-01-18 03:19:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:19:51,584 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 03:19:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:51,586 INFO L225 Difference]: With dead ends: 1413 [2022-01-18 03:19:51,586 INFO L226 Difference]: Without dead ends: 1263 [2022-01-18 03:19:51,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:19:51,586 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 247 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:51,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 2565 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:19:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-18 03:19:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1199. [2022-01-18 03:19:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.5058430717863107) internal successors, (3002), 1198 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 3002 transitions. [2022-01-18 03:19:51,596 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 3002 transitions. Word has length 79 [2022-01-18 03:19:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:51,596 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 3002 transitions. [2022-01-18 03:19:51,596 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 03:19:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 3002 transitions. [2022-01-18 03:19:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:51,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:51,597 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 03:19:51,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-01-18 03:19:51,597 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:51,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:51,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1766434038, now seen corresponding path program 334 times [2022-01-18 03:19:51,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:51,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876124113] [2022-01-18 03:19:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:51,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:51,906 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 03:19:51,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:51,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876124113] [2022-01-18 03:19:51,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876124113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:51,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:51,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:51,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024318859] [2022-01-18 03:19:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:51,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:51,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:51,907 INFO L87 Difference]: Start difference. First operand 1199 states and 3002 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 03:19:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:53,522 INFO L93 Difference]: Finished difference Result 1426 states and 3549 transitions. [2022-01-18 03:19:53,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:19:53,522 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 03:19:53,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:53,524 INFO L225 Difference]: With dead ends: 1426 [2022-01-18 03:19:53,524 INFO L226 Difference]: Without dead ends: 1328 [2022-01-18 03:19:53,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:19:53,524 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 311 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:53,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2522 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:19:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2022-01-18 03:19:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1223. [2022-01-18 03:19:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 2.504091653027823) internal successors, (3060), 1222 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 3060 transitions. [2022-01-18 03:19:53,535 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 3060 transitions. Word has length 79 [2022-01-18 03:19:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:53,535 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 3060 transitions. [2022-01-18 03:19:53,535 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 03:19:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 3060 transitions. [2022-01-18 03:19:53,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:53,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:53,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:19:53,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-01-18 03:19:53,537 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash -449901146, now seen corresponding path program 335 times [2022-01-18 03:19:53,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:53,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463787676] [2022-01-18 03:19:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:53,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:53,833 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 03:19:53,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:53,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463787676] [2022-01-18 03:19:53,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463787676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:53,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:53,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:53,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221515906] [2022-01-18 03:19:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:53,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:53,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:53,834 INFO L87 Difference]: Start difference. First operand 1223 states and 3060 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 03:19:56,140 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 03:19:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:57,286 INFO L93 Difference]: Finished difference Result 1409 states and 3496 transitions. [2022-01-18 03:19:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:19:57,287 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 03:19:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:57,288 INFO L225 Difference]: With dead ends: 1409 [2022-01-18 03:19:57,288 INFO L226 Difference]: Without dead ends: 1250 [2022-01-18 03:19:57,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:19:57,289 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 299 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:57,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2382 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 970 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 03:19:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-01-18 03:19:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1175. [2022-01-18 03:19:57,297 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 03:19:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 2940 transitions. [2022-01-18 03:19:57,298 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 2940 transitions. Word has length 79 [2022-01-18 03:19:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:57,298 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 2940 transitions. [2022-01-18 03:19:57,298 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 03:19:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 2940 transitions. [2022-01-18 03:19:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:57,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:57,299 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 03:19:57,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-01-18 03:19:57,300 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:57,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:57,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2134116460, now seen corresponding path program 336 times [2022-01-18 03:19:57,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:57,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248342421] [2022-01-18 03:19:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:57,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:57,609 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 03:19:57,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:57,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248342421] [2022-01-18 03:19:57,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248342421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:57,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:57,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:19:57,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725869971] [2022-01-18 03:19:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:57,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:19:57,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:19:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:19:57,610 INFO L87 Difference]: Start difference. First operand 1175 states and 2940 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 03:19:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:19:58,753 INFO L93 Difference]: Finished difference Result 1401 states and 3491 transitions. [2022-01-18 03:19:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:19:58,753 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 03:19:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:19:58,755 INFO L225 Difference]: With dead ends: 1401 [2022-01-18 03:19:58,755 INFO L226 Difference]: Without dead ends: 1271 [2022-01-18 03:19:58,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=2320, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:19:58,755 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 283 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:19:58,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2269 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:19:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-01-18 03:19:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1191. [2022-01-18 03:19:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1190 states have (on average 2.500840336134454) internal successors, (2976), 1190 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:19:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2976 transitions. [2022-01-18 03:19:58,766 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2976 transitions. Word has length 79 [2022-01-18 03:19:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:19:58,766 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 2976 transitions. [2022-01-18 03:19:58,766 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 03:19:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2976 transitions. [2022-01-18 03:19:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:19:58,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:19:58,767 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 03:19:58,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-01-18 03:19:58,767 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:19:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:19:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1280725294, now seen corresponding path program 337 times [2022-01-18 03:19:58,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:19:58,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81479932] [2022-01-18 03:19:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:19:58,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:19:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:19:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:19:59,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:19:59,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81479932] [2022-01-18 03:19:59,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81479932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:19:59,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:19:59,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:19:59,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300526540] [2022-01-18 03:19:59,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:19:59,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:19:59,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:19:59,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:19:59,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:19:59,087 INFO L87 Difference]: Start difference. First operand 1191 states and 2976 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 03:20:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:00,828 INFO L93 Difference]: Finished difference Result 1392 states and 3460 transitions. [2022-01-18 03:20:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:20:00,829 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 03:20:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:00,830 INFO L225 Difference]: With dead ends: 1392 [2022-01-18 03:20:00,830 INFO L226 Difference]: Without dead ends: 1294 [2022-01-18 03:20:00,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=2715, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:20:00,831 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 286 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:00,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2826 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:20:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-01-18 03:20:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1195. [2022-01-18 03:20:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4983249581239533) internal successors, (2983), 1194 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2983 transitions. [2022-01-18 03:20:00,841 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2983 transitions. Word has length 79 [2022-01-18 03:20:00,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:00,841 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2983 transitions. [2022-01-18 03:20:00,841 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 03:20:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2983 transitions. [2022-01-18 03:20:00,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:00,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:00,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:00,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-01-18 03:20:00,842 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:00,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:00,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1994962572, now seen corresponding path program 338 times [2022-01-18 03:20:00,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:00,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636049027] [2022-01-18 03:20:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:00,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:01,165 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 03:20:01,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:01,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636049027] [2022-01-18 03:20:01,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636049027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:01,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:01,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:01,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667595918] [2022-01-18 03:20:01,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:01,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:01,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:01,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:01,166 INFO L87 Difference]: Start difference. First operand 1195 states and 2983 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 03:20:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:02,457 INFO L93 Difference]: Finished difference Result 1375 states and 3411 transitions. [2022-01-18 03:20:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:20:02,457 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 03:20:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:02,459 INFO L225 Difference]: With dead ends: 1375 [2022-01-18 03:20:02,459 INFO L226 Difference]: Without dead ends: 1262 [2022-01-18 03:20:02,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=2613, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:20:02,459 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 297 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:02,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2629 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-01-18 03:20:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1183. [2022-01-18 03:20:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.50253807106599) internal successors, (2958), 1182 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2958 transitions. [2022-01-18 03:20:02,469 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2958 transitions. Word has length 79 [2022-01-18 03:20:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:02,470 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2958 transitions. [2022-01-18 03:20:02,470 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 03:20:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2958 transitions. [2022-01-18 03:20:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:02,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:02,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:02,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-01-18 03:20:02,471 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:02,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:02,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1974556498, now seen corresponding path program 339 times [2022-01-18 03:20:02,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:02,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282470480] [2022-01-18 03:20:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:02,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:02,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:02,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282470480] [2022-01-18 03:20:02,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282470480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:02,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:02,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:02,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159270662] [2022-01-18 03:20:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:02,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:02,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:02,778 INFO L87 Difference]: Start difference. First operand 1183 states and 2958 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 03:20:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:03,819 INFO L93 Difference]: Finished difference Result 1381 states and 3432 transitions. [2022-01-18 03:20:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:20:03,819 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 03:20:03,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:03,821 INFO L225 Difference]: With dead ends: 1381 [2022-01-18 03:20:03,821 INFO L226 Difference]: Without dead ends: 1231 [2022-01-18 03:20:03,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:20:03,821 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 266 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:03,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2395 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:20:03,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-01-18 03:20:03,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1179. [2022-01-18 03:20:03,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.50169779286927) internal successors, (2947), 1178 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2947 transitions. [2022-01-18 03:20:03,831 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2947 transitions. Word has length 79 [2022-01-18 03:20:03,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:03,831 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 2947 transitions. [2022-01-18 03:20:03,831 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 03:20:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2947 transitions. [2022-01-18 03:20:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:03,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:03,832 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 03:20:03,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-01-18 03:20:03,832 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1613829834, now seen corresponding path program 340 times [2022-01-18 03:20:03,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:03,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632454105] [2022-01-18 03:20:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:03,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:04,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:04,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632454105] [2022-01-18 03:20:04,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632454105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:04,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:04,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:04,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547596543] [2022-01-18 03:20:04,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:04,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:04,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:04,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:04,139 INFO L87 Difference]: Start difference. First operand 1179 states and 2947 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 03:20:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:05,271 INFO L93 Difference]: Finished difference Result 1393 states and 3457 transitions. [2022-01-18 03:20:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:20:05,271 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 03:20:05,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:05,273 INFO L225 Difference]: With dead ends: 1393 [2022-01-18 03:20:05,273 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 03:20:05,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1963, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:20:05,273 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 262 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:05,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 2298 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 03:20:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1167. [2022-01-18 03:20:05,282 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 03:20:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2922 transitions. [2022-01-18 03:20:05,283 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2922 transitions. Word has length 79 [2022-01-18 03:20:05,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:05,283 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2922 transitions. [2022-01-18 03:20:05,284 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 03:20:05,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2922 transitions. [2022-01-18 03:20:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:05,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:05,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:05,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-01-18 03:20:05,285 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:05,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 147984844, now seen corresponding path program 341 times [2022-01-18 03:20:05,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:05,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220512382] [2022-01-18 03:20:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:05,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:05,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:05,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220512382] [2022-01-18 03:20:05,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220512382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:05,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:05,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:05,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379767204] [2022-01-18 03:20:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:05,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:05,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:05,609 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 03:20:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:06,981 INFO L93 Difference]: Finished difference Result 1445 states and 3616 transitions. [2022-01-18 03:20:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:20:06,981 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 03:20:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:06,982 INFO L225 Difference]: With dead ends: 1445 [2022-01-18 03:20:06,982 INFO L226 Difference]: Without dead ends: 1315 [2022-01-18 03:20:06,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=3028, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:20:06,983 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 329 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:06,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2547 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-01-18 03:20:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1207. [2022-01-18 03:20:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.5074626865671643) internal successors, (3024), 1206 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 3024 transitions. [2022-01-18 03:20:06,993 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 3024 transitions. Word has length 79 [2022-01-18 03:20:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:06,993 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 3024 transitions. [2022-01-18 03:20:06,993 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 03:20:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 3024 transitions. [2022-01-18 03:20:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:06,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:06,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:06,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-01-18 03:20:06,994 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash -705406322, now seen corresponding path program 342 times [2022-01-18 03:20:06,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:06,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673456633] [2022-01-18 03:20:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:06,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:07,318 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 03:20:07,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:07,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673456633] [2022-01-18 03:20:07,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673456633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:07,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:07,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:07,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504179402] [2022-01-18 03:20:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:07,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:07,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:07,319 INFO L87 Difference]: Start difference. First operand 1207 states and 3024 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 03:20:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:08,825 INFO L93 Difference]: Finished difference Result 1436 states and 3585 transitions. [2022-01-18 03:20:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:20:08,825 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 03:20:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:08,827 INFO L225 Difference]: With dead ends: 1436 [2022-01-18 03:20:08,827 INFO L226 Difference]: Without dead ends: 1338 [2022-01-18 03:20:08,827 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 03:20:08,828 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 332 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:08,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 2760 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:20:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2022-01-18 03:20:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1211. [2022-01-18 03:20:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5049586776859503) internal successors, (3031), 1210 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3031 transitions. [2022-01-18 03:20:08,838 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3031 transitions. Word has length 79 [2022-01-18 03:20:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:08,838 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3031 transitions. [2022-01-18 03:20:08,838 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 03:20:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3031 transitions. [2022-01-18 03:20:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:08,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:08,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:08,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-01-18 03:20:08,840 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash 8830956, now seen corresponding path program 343 times [2022-01-18 03:20:08,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:08,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388020370] [2022-01-18 03:20:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:08,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:09,181 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 03:20:09,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:09,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388020370] [2022-01-18 03:20:09,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388020370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:09,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:09,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:09,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539258668] [2022-01-18 03:20:09,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:09,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:09,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:09,182 INFO L87 Difference]: Start difference. First operand 1211 states and 3031 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 03:20:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:10,788 INFO L93 Difference]: Finished difference Result 1419 states and 3536 transitions. [2022-01-18 03:20:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:20:10,788 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 03:20:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:10,790 INFO L225 Difference]: With dead ends: 1419 [2022-01-18 03:20:10,790 INFO L226 Difference]: Without dead ends: 1306 [2022-01-18 03:20:10,790 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 03:20:10,791 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 358 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:10,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2568 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 03:20:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-01-18 03:20:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1199. [2022-01-18 03:20:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.5025041736227047) internal successors, (2998), 1198 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2998 transitions. [2022-01-18 03:20:10,801 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2998 transitions. Word has length 79 [2022-01-18 03:20:10,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:10,801 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2998 transitions. [2022-01-18 03:20:10,801 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 03:20:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2998 transitions. [2022-01-18 03:20:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:10,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:10,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:10,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-01-18 03:20:10,802 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:10,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash 334279182, now seen corresponding path program 344 times [2022-01-18 03:20:10,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:10,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718236246] [2022-01-18 03:20:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:10,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:11,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:11,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718236246] [2022-01-18 03:20:11,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718236246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:11,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:11,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:11,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39295741] [2022-01-18 03:20:11,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:11,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:11,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:11,125 INFO L87 Difference]: Start difference. First operand 1199 states and 2998 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 03:20:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:12,408 INFO L93 Difference]: Finished difference Result 1433 states and 3567 transitions. [2022-01-18 03:20:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:20:12,408 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 03:20:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:12,410 INFO L225 Difference]: With dead ends: 1433 [2022-01-18 03:20:12,410 INFO L226 Difference]: Without dead ends: 1283 [2022-01-18 03:20:12,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=2719, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:20:12,410 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 311 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:12,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 2688 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-01-18 03:20:12,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1195. [2022-01-18 03:20:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.5016750418760467) internal successors, (2987), 1194 states have internal predecessors, (2987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2987 transitions. [2022-01-18 03:20:12,420 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2987 transitions. Word has length 79 [2022-01-18 03:20:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:12,420 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2987 transitions. [2022-01-18 03:20:12,421 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 03:20:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2987 transitions. [2022-01-18 03:20:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:12,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:12,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:12,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-01-18 03:20:12,422 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1195861516, now seen corresponding path program 345 times [2022-01-18 03:20:12,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:12,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011482343] [2022-01-18 03:20:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:12,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:12,725 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 03:20:12,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:12,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011482343] [2022-01-18 03:20:12,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011482343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:12,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:12,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:12,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347462765] [2022-01-18 03:20:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:12,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:12,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:12,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:12,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:12,727 INFO L87 Difference]: Start difference. First operand 1195 states and 2987 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 03:20:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:13,954 INFO L93 Difference]: Finished difference Result 1414 states and 3512 transitions. [2022-01-18 03:20:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:20:13,954 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 03:20:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:13,956 INFO L225 Difference]: With dead ends: 1414 [2022-01-18 03:20:13,956 INFO L226 Difference]: Without dead ends: 1316 [2022-01-18 03:20:13,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:20:13,956 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 264 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:13,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2665 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2022-01-18 03:20:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1219. [2022-01-18 03:20:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 2.5) internal successors, (3045), 1218 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3045 transitions. [2022-01-18 03:20:13,966 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3045 transitions. Word has length 79 [2022-01-18 03:20:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:13,967 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 3045 transitions. [2022-01-18 03:20:13,967 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 03:20:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3045 transitions. [2022-01-18 03:20:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:13,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:13,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:13,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-01-18 03:20:13,968 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1782572888, now seen corresponding path program 346 times [2022-01-18 03:20:13,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:13,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072652111] [2022-01-18 03:20:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:13,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:14,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:14,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072652111] [2022-01-18 03:20:14,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072652111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:14,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:14,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:14,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124959883] [2022-01-18 03:20:14,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:14,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:14,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:14,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:14,252 INFO L87 Difference]: Start difference. First operand 1219 states and 3045 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 03:20:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:15,541 INFO L93 Difference]: Finished difference Result 1382 states and 3424 transitions. [2022-01-18 03:20:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:20:15,542 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 03:20:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:15,543 INFO L225 Difference]: With dead ends: 1382 [2022-01-18 03:20:15,543 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 03:20:15,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=2310, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:20:15,544 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 286 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:15,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2526 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:20:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 03:20:15,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1171. [2022-01-18 03:20:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 2.5034188034188034) internal successors, (2929), 1170 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2929 transitions. [2022-01-18 03:20:15,554 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2929 transitions. Word has length 79 [2022-01-18 03:20:15,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:15,554 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 2929 transitions. [2022-01-18 03:20:15,554 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 03:20:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2929 transitions. [2022-01-18 03:20:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:15,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:15,555 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 03:20:15,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-01-18 03:20:15,555 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:15,555 INFO L85 PathProgramCache]: Analyzing trace with hash -448915766, now seen corresponding path program 347 times [2022-01-18 03:20:15,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:15,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579794393] [2022-01-18 03:20:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:15,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:15,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:15,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579794393] [2022-01-18 03:20:15,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579794393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:15,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:15,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:15,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66584281] [2022-01-18 03:20:15,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:15,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:15,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:15,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:15,869 INFO L87 Difference]: Start difference. First operand 1171 states and 2929 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 03:20:17,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:17,014 INFO L93 Difference]: Finished difference Result 1401 states and 3491 transitions. [2022-01-18 03:20:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:20:17,014 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 03:20:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:17,016 INFO L225 Difference]: With dead ends: 1401 [2022-01-18 03:20:17,016 INFO L226 Difference]: Without dead ends: 1271 [2022-01-18 03:20:17,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:20:17,016 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 259 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:17,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 2650 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:17,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-01-18 03:20:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1203. [2022-01-18 03:20:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.5033277870216306) internal successors, (3009), 1202 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 3009 transitions. [2022-01-18 03:20:17,026 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 3009 transitions. Word has length 79 [2022-01-18 03:20:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:17,026 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 3009 transitions. [2022-01-18 03:20:17,026 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 03:20:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 3009 transitions. [2022-01-18 03:20:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:17,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:17,027 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 03:20:17,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-01-18 03:20:17,028 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1302306932, now seen corresponding path program 348 times [2022-01-18 03:20:17,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:17,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745383295] [2022-01-18 03:20:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:17,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:17,329 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 03:20:17,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:17,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745383295] [2022-01-18 03:20:17,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745383295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:17,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:17,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:17,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630506728] [2022-01-18 03:20:17,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:17,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:17,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:17,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:17,330 INFO L87 Difference]: Start difference. First operand 1203 states and 3009 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 03:20:19,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:19,166 INFO L93 Difference]: Finished difference Result 1388 states and 3449 transitions. [2022-01-18 03:20:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:20:19,167 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 03:20:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:19,168 INFO L225 Difference]: With dead ends: 1388 [2022-01-18 03:20:19,168 INFO L226 Difference]: Without dead ends: 1290 [2022-01-18 03:20:19,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:20:19,169 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 312 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:19,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2361 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:20:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-01-18 03:20:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1207. [2022-01-18 03:20:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.5008291873963517) internal successors, (3016), 1206 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 3016 transitions. [2022-01-18 03:20:19,179 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 3016 transitions. Word has length 79 [2022-01-18 03:20:19,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:19,180 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 3016 transitions. [2022-01-18 03:20:19,180 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 03:20:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 3016 transitions. [2022-01-18 03:20:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:19,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:19,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:19,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-01-18 03:20:19,181 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash -588069654, now seen corresponding path program 349 times [2022-01-18 03:20:19,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:19,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444239550] [2022-01-18 03:20:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:19,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:19,486 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 03:20:19,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:19,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444239550] [2022-01-18 03:20:19,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444239550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:19,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:19,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:19,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110805161] [2022-01-18 03:20:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:19,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:19,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:19,487 INFO L87 Difference]: Start difference. First operand 1207 states and 3016 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 03:20:21,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:21,070 INFO L93 Difference]: Finished difference Result 1356 states and 3365 transitions. [2022-01-18 03:20:21,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:20:21,070 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 03:20:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:21,071 INFO L225 Difference]: With dead ends: 1356 [2022-01-18 03:20:21,072 INFO L226 Difference]: Without dead ends: 1243 [2022-01-18 03:20:21,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:20:21,072 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 322 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:21,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2386 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 03:20:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-01-18 03:20:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1195. [2022-01-18 03:20:21,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.5016750418760467) internal successors, (2987), 1194 states have internal predecessors, (2987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2987 transitions. [2022-01-18 03:20:21,082 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2987 transitions. Word has length 79 [2022-01-18 03:20:21,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:21,082 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2987 transitions. [2022-01-18 03:20:21,082 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 03:20:21,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2987 transitions. [2022-01-18 03:20:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:21,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:21,083 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 03:20:21,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-01-18 03:20:21,084 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:21,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash -29111062, now seen corresponding path program 350 times [2022-01-18 03:20:21,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999361516] [2022-01-18 03:20:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:21,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:21,390 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 03:20:21,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:21,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999361516] [2022-01-18 03:20:21,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999361516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:21,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:21,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:21,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078498672] [2022-01-18 03:20:21,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:21,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:21,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:21,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:21,391 INFO L87 Difference]: Start difference. First operand 1195 states and 2987 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 03:20:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:22,662 INFO L93 Difference]: Finished difference Result 1406 states and 3490 transitions. [2022-01-18 03:20:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:20:22,663 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 03:20:22,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:22,664 INFO L225 Difference]: With dead ends: 1406 [2022-01-18 03:20:22,664 INFO L226 Difference]: Without dead ends: 1308 [2022-01-18 03:20:22,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:20:22,665 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 316 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:22,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 2518 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:20:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-01-18 03:20:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1219. [2022-01-18 03:20:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 2.5) internal successors, (3045), 1218 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3045 transitions. [2022-01-18 03:20:22,675 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3045 transitions. Word has length 79 [2022-01-18 03:20:22,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:22,675 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 3045 transitions. [2022-01-18 03:20:22,675 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 03:20:22,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3045 transitions. [2022-01-18 03:20:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:22,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:22,676 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 03:20:22,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-01-18 03:20:22,676 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:22,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1287421830, now seen corresponding path program 351 times [2022-01-18 03:20:22,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:22,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320934732] [2022-01-18 03:20:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:22,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:22,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320934732] [2022-01-18 03:20:22,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320934732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:22,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:22,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:22,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445144242] [2022-01-18 03:20:22,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:22,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:22,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:22,979 INFO L87 Difference]: Start difference. First operand 1219 states and 3045 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 03:20:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:24,110 INFO L93 Difference]: Finished difference Result 1374 states and 3402 transitions. [2022-01-18 03:20:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:20:24,110 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 03:20:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:24,112 INFO L225 Difference]: With dead ends: 1374 [2022-01-18 03:20:24,112 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 03:20:24,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:20:24,112 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 315 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:24,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2376 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:20:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 03:20:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1179. [2022-01-18 03:20:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.49830220713073) internal successors, (2943), 1178 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2943 transitions. [2022-01-18 03:20:24,122 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2943 transitions. Word has length 79 [2022-01-18 03:20:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:24,122 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 2943 transitions. [2022-01-18 03:20:24,122 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 03:20:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2943 transitions. [2022-01-18 03:20:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:24,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:24,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:24,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-01-18 03:20:24,124 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2141512938, now seen corresponding path program 352 times [2022-01-18 03:20:24,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:24,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057144957] [2022-01-18 03:20:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:24,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:24,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:24,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057144957] [2022-01-18 03:20:24,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057144957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:24,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:24,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:24,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108584663] [2022-01-18 03:20:24,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:24,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:24,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:24,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:24,449 INFO L87 Difference]: Start difference. First operand 1179 states and 2943 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 03:20:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:26,847 INFO L93 Difference]: Finished difference Result 1410 states and 3497 transitions. [2022-01-18 03:20:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:20:26,847 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 03:20:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:26,849 INFO L225 Difference]: With dead ends: 1410 [2022-01-18 03:20:26,849 INFO L226 Difference]: Without dead ends: 1312 [2022-01-18 03:20:26,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=2707, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:20:26,849 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 315 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:26,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 2658 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 03:20:26,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2022-01-18 03:20:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1207. [2022-01-18 03:20:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.4975124378109452) internal successors, (3012), 1206 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 3012 transitions. [2022-01-18 03:20:26,860 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 3012 transitions. Word has length 79 [2022-01-18 03:20:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:26,860 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 3012 transitions. [2022-01-18 03:20:26,860 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 03:20:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 3012 transitions. [2022-01-18 03:20:26,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:26,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:26,861 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 03:20:26,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-01-18 03:20:26,861 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash -836921466, now seen corresponding path program 353 times [2022-01-18 03:20:26,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:26,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904062347] [2022-01-18 03:20:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:26,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:27,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:27,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904062347] [2022-01-18 03:20:27,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904062347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:27,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:27,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:27,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970604806] [2022-01-18 03:20:27,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:27,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:27,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:27,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:27,159 INFO L87 Difference]: Start difference. First operand 1207 states and 3012 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 03:20:28,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:28,420 INFO L93 Difference]: Finished difference Result 1366 states and 3380 transitions. [2022-01-18 03:20:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:20:28,420 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 03:20:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:28,421 INFO L225 Difference]: With dead ends: 1366 [2022-01-18 03:20:28,421 INFO L226 Difference]: Without dead ends: 1231 [2022-01-18 03:20:28,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=2607, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:20:28,422 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 296 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:28,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 2633 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-01-18 03:20:28,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1183. [2022-01-18 03:20:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 2.495769881556684) internal successors, (2950), 1182 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:28,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2950 transitions. [2022-01-18 03:20:28,431 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2950 transitions. Word has length 79 [2022-01-18 03:20:28,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:28,432 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 2950 transitions. [2022-01-18 03:20:28,432 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 03:20:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2950 transitions. [2022-01-18 03:20:28,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:28,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:28,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:28,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-01-18 03:20:28,433 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1967436496, now seen corresponding path program 354 times [2022-01-18 03:20:28,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:28,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017987448] [2022-01-18 03:20:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:28,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:28,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:28,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017987448] [2022-01-18 03:20:28,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017987448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:28,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:28,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:28,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248460297] [2022-01-18 03:20:28,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:28,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:28,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:28,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:28,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:28,730 INFO L87 Difference]: Start difference. First operand 1183 states and 2950 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 03:20:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:30,444 INFO L93 Difference]: Finished difference Result 1369 states and 3382 transitions. [2022-01-18 03:20:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 03:20:30,444 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 03:20:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:30,446 INFO L225 Difference]: With dead ends: 1369 [2022-01-18 03:20:30,446 INFO L226 Difference]: Without dead ends: 1191 [2022-01-18 03:20:30,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 03:20:30,446 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 261 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:30,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2584 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:20:30,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-01-18 03:20:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1163. [2022-01-18 03:20:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.5051635111876074) internal successors, (2911), 1162 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2911 transitions. [2022-01-18 03:20:30,456 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2911 transitions. Word has length 79 [2022-01-18 03:20:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:30,456 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2911 transitions. [2022-01-18 03:20:30,456 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 03:20:30,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2911 transitions. [2022-01-18 03:20:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:30,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:30,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:30,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-01-18 03:20:30,457 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:30,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1103048232, now seen corresponding path program 355 times [2022-01-18 03:20:30,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:30,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246335991] [2022-01-18 03:20:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:30,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:30,774 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 03:20:30,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:30,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246335991] [2022-01-18 03:20:30,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246335991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:30,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:30,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:30,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950316616] [2022-01-18 03:20:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:30,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:30,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:30,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:30,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:30,775 INFO L87 Difference]: Start difference. First operand 1163 states and 2911 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 03:20:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:32,583 INFO L93 Difference]: Finished difference Result 1417 states and 3527 transitions. [2022-01-18 03:20:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:20:32,583 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 03:20:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:32,584 INFO L225 Difference]: With dead ends: 1417 [2022-01-18 03:20:32,585 INFO L226 Difference]: Without dead ends: 1287 [2022-01-18 03:20:32,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=2916, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:20:32,585 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 329 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:32,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 2607 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:20:32,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-01-18 03:20:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1207. [2022-01-18 03:20:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 2.5074626865671643) internal successors, (3024), 1206 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 3024 transitions. [2022-01-18 03:20:32,595 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 3024 transitions. Word has length 79 [2022-01-18 03:20:32,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:32,595 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 3024 transitions. [2022-01-18 03:20:32,595 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 03:20:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 3024 transitions. [2022-01-18 03:20:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:32,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:32,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:32,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2022-01-18 03:20:32,596 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:32,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:32,597 INFO L85 PathProgramCache]: Analyzing trace with hash 249657066, now seen corresponding path program 356 times [2022-01-18 03:20:32,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:32,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127168065] [2022-01-18 03:20:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:32,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:32,946 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 03:20:32,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:32,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127168065] [2022-01-18 03:20:32,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127168065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:32,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:32,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:32,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737429214] [2022-01-18 03:20:32,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:32,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:32,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:32,948 INFO L87 Difference]: Start difference. First operand 1207 states and 3024 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 03:20:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:34,375 INFO L93 Difference]: Finished difference Result 1416 states and 3518 transitions. [2022-01-18 03:20:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:20:34,375 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 03:20:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:34,377 INFO L225 Difference]: With dead ends: 1416 [2022-01-18 03:20:34,377 INFO L226 Difference]: Without dead ends: 1318 [2022-01-18 03:20:34,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:20:34,377 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 285 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:34,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2816 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:20:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-01-18 03:20:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1211. [2022-01-18 03:20:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5049586776859503) internal successors, (3031), 1210 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3031 transitions. [2022-01-18 03:20:34,388 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3031 transitions. Word has length 79 [2022-01-18 03:20:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:34,388 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3031 transitions. [2022-01-18 03:20:34,389 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 03:20:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3031 transitions. [2022-01-18 03:20:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:34,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:34,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:34,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2022-01-18 03:20:34,390 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:34,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash 963894344, now seen corresponding path program 357 times [2022-01-18 03:20:34,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:34,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792898516] [2022-01-18 03:20:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:34,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:34,721 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 03:20:34,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:34,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792898516] [2022-01-18 03:20:34,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792898516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:34,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:34,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:34,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683307962] [2022-01-18 03:20:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:34,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:34,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:34,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:34,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:34,722 INFO L87 Difference]: Start difference. First operand 1211 states and 3031 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 03:20:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:36,293 INFO L93 Difference]: Finished difference Result 1399 states and 3469 transitions. [2022-01-18 03:20:36,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:20:36,293 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 03:20:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:36,295 INFO L225 Difference]: With dead ends: 1399 [2022-01-18 03:20:36,295 INFO L226 Difference]: Without dead ends: 1286 [2022-01-18 03:20:36,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:20:36,295 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 364 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:36,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 2633 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:20:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-01-18 03:20:36,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1199. [2022-01-18 03:20:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1198 states have (on average 2.4958263772954923) internal successors, (2990), 1198 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 2990 transitions. [2022-01-18 03:20:36,306 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 2990 transitions. Word has length 79 [2022-01-18 03:20:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:36,306 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 2990 transitions. [2022-01-18 03:20:36,306 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 03:20:36,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 2990 transitions. [2022-01-18 03:20:36,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:36,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:36,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:36,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2022-01-18 03:20:36,307 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:36,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1289342570, now seen corresponding path program 358 times [2022-01-18 03:20:36,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:36,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003551611] [2022-01-18 03:20:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:36,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:36,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:36,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003551611] [2022-01-18 03:20:36,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003551611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:36,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:36,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:36,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645332786] [2022-01-18 03:20:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:36,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:36,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:36,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:36,626 INFO L87 Difference]: Start difference. First operand 1199 states and 2990 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 03:20:37,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:37,972 INFO L93 Difference]: Finished difference Result 1393 states and 3441 transitions. [2022-01-18 03:20:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:20:37,972 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 03:20:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:37,974 INFO L225 Difference]: With dead ends: 1393 [2022-01-18 03:20:37,974 INFO L226 Difference]: Without dead ends: 1243 [2022-01-18 03:20:37,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=2612, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:20:37,975 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 279 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:37,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2957 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:20:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2022-01-18 03:20:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1195. [2022-01-18 03:20:37,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 2.4949748743718594) internal successors, (2979), 1194 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 2979 transitions. [2022-01-18 03:20:37,985 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 2979 transitions. Word has length 79 [2022-01-18 03:20:37,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:37,985 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 2979 transitions. [2022-01-18 03:20:37,985 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 03:20:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 2979 transitions. [2022-01-18 03:20:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:37,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:37,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:37,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-01-18 03:20:37,986 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2144042392, now seen corresponding path program 359 times [2022-01-18 03:20:37,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:37,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696007427] [2022-01-18 03:20:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:37,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:38,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:38,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696007427] [2022-01-18 03:20:38,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696007427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:38,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:38,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:38,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056379610] [2022-01-18 03:20:38,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:38,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:38,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:38,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:38,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:38,297 INFO L87 Difference]: Start difference. First operand 1195 states and 2979 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 03:20:40,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:40,457 INFO L93 Difference]: Finished difference Result 1398 states and 3448 transitions. [2022-01-18 03:20:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 03:20:40,458 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 03:20:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:40,459 INFO L225 Difference]: With dead ends: 1398 [2022-01-18 03:20:40,459 INFO L226 Difference]: Without dead ends: 1272 [2022-01-18 03:20:40,460 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 03:20:40,460 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 314 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:40,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 2629 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 03:20:40,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-01-18 03:20:40,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1203. [2022-01-18 03:20:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 2.4933444259567388) internal successors, (2997), 1202 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 2997 transitions. [2022-01-18 03:20:40,470 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 2997 transitions. Word has length 79 [2022-01-18 03:20:40,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:40,470 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 2997 transitions. [2022-01-18 03:20:40,470 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 03:20:40,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 2997 transitions. [2022-01-18 03:20:40,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:40,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:40,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:40,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-01-18 03:20:40,471 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash -827509500, now seen corresponding path program 360 times [2022-01-18 03:20:40,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:40,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004924587] [2022-01-18 03:20:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:40,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:40,767 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 03:20:40,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:40,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004924587] [2022-01-18 03:20:40,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004924587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:40,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:40,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:40,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044414515] [2022-01-18 03:20:40,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:40,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:40,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:40,768 INFO L87 Difference]: Start difference. First operand 1203 states and 2997 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 03:20:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:41,959 INFO L93 Difference]: Finished difference Result 1338 states and 3299 transitions. [2022-01-18 03:20:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 03:20:41,959 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 03:20:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:41,961 INFO L225 Difference]: With dead ends: 1338 [2022-01-18 03:20:41,961 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 03:20:41,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:20:41,961 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 266 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:41,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 2691 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 03:20:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1155. [2022-01-18 03:20:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 2.496533795493934) internal successors, (2881), 1154 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2881 transitions. [2022-01-18 03:20:41,970 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2881 transitions. Word has length 79 [2022-01-18 03:20:41,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:41,971 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2881 transitions. [2022-01-18 03:20:41,971 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 03:20:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2881 transitions. [2022-01-18 03:20:41,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:41,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:41,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:41,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2022-01-18 03:20:41,972 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1444658794, now seen corresponding path program 361 times [2022-01-18 03:20:41,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:41,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028665553] [2022-01-18 03:20:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:41,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:42,291 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 03:20:42,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:42,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028665553] [2022-01-18 03:20:42,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028665553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:42,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:42,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:42,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111383451] [2022-01-18 03:20:42,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:42,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:42,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:42,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:42,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:42,292 INFO L87 Difference]: Start difference. First operand 1155 states and 2881 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 03:20:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:43,531 INFO L93 Difference]: Finished difference Result 1325 states and 3282 transitions. [2022-01-18 03:20:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:20:43,531 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 03:20:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:43,533 INFO L225 Difference]: With dead ends: 1325 [2022-01-18 03:20:43,533 INFO L226 Difference]: Without dead ends: 1211 [2022-01-18 03:20:43,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:20:43,533 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 300 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:43,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 2424 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:20:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-01-18 03:20:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1159. [2022-01-18 03:20:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.4939550949913643) internal successors, (2888), 1158 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:20:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2888 transitions. [2022-01-18 03:20:43,543 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2888 transitions. Word has length 79 [2022-01-18 03:20:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:43,543 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2888 transitions. [2022-01-18 03:20:43,543 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 03:20:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2888 transitions. [2022-01-18 03:20:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:43,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:43,544 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 03:20:43,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2022-01-18 03:20:43,544 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:43,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:43,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1077764364, now seen corresponding path program 362 times [2022-01-18 03:20:43,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:43,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195995273] [2022-01-18 03:20:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:43,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:43,846 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 03:20:43,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:43,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195995273] [2022-01-18 03:20:43,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195995273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:43,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:43,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:43,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880740268] [2022-01-18 03:20:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:43,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:43,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:43,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:43,847 INFO L87 Difference]: Start difference. First operand 1159 states and 2888 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 03:20:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:45,062 INFO L93 Difference]: Finished difference Result 1336 states and 3306 transitions. [2022-01-18 03:20:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:20:45,063 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 03:20:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:45,064 INFO L225 Difference]: With dead ends: 1336 [2022-01-18 03:20:45,064 INFO L226 Difference]: Without dead ends: 1238 [2022-01-18 03:20:45,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:20:45,065 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 263 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:45,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2489 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-01-18 03:20:45,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1163. [2022-01-18 03:20:45,074 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 03:20:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2895 transitions. [2022-01-18 03:20:45,076 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2895 transitions. Word has length 79 [2022-01-18 03:20:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:45,076 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2895 transitions. [2022-01-18 03:20:45,076 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 03:20:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2895 transitions. [2022-01-18 03:20:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:45,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:45,077 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 03:20:45,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2022-01-18 03:20:45,077 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:45,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1792001642, now seen corresponding path program 363 times [2022-01-18 03:20:45,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:45,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115327529] [2022-01-18 03:20:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:45,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:45,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:45,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115327529] [2022-01-18 03:20:45,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115327529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:45,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:45,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:45,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8858530] [2022-01-18 03:20:45,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:45,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:45,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:45,400 INFO L87 Difference]: Start difference. First operand 1163 states and 2895 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 03:20:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:47,569 INFO L93 Difference]: Finished difference Result 1304 states and 3222 transitions. [2022-01-18 03:20:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:20:47,570 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 03:20:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:47,571 INFO L225 Difference]: With dead ends: 1304 [2022-01-18 03:20:47,571 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 03:20:47,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:20:47,572 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 318 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:47,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2534 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 03:20:47,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 03:20:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1155. [2022-01-18 03:20:47,580 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 03:20:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2877 transitions. [2022-01-18 03:20:47,582 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2877 transitions. Word has length 79 [2022-01-18 03:20:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:47,582 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2877 transitions. [2022-01-18 03:20:47,582 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 03:20:47,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2877 transitions. [2022-01-18 03:20:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:47,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:47,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:47,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2022-01-18 03:20:47,583 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2032274840, now seen corresponding path program 364 times [2022-01-18 03:20:47,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:47,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992779893] [2022-01-18 03:20:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:47,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:47,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:47,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992779893] [2022-01-18 03:20:47,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992779893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:47,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:47,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:47,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149867036] [2022-01-18 03:20:47,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:47,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:47,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:47,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:47,895 INFO L87 Difference]: Start difference. First operand 1155 states and 2877 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 03:20:49,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:49,141 INFO L93 Difference]: Finished difference Result 1301 states and 3208 transitions. [2022-01-18 03:20:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:20:49,141 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 03:20:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:49,142 INFO L225 Difference]: With dead ends: 1301 [2022-01-18 03:20:49,143 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 03:20:49,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:20:49,143 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 297 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:49,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2289 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 03:20:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1147. [2022-01-18 03:20:49,152 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 03:20:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2855 transitions. [2022-01-18 03:20:49,153 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2855 transitions. Word has length 79 [2022-01-18 03:20:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:49,153 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2855 transitions. [2022-01-18 03:20:49,153 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 03:20:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2855 transitions. [2022-01-18 03:20:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:49,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:49,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:49,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-01-18 03:20:49,155 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:49,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1198390970, now seen corresponding path program 365 times [2022-01-18 03:20:49,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:49,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792591501] [2022-01-18 03:20:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:49,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:49,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:49,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792591501] [2022-01-18 03:20:49,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792591501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:49,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:49,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:20:49,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031475103] [2022-01-18 03:20:49,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:49,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:20:49,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:20:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:20:49,485 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 03:20:50,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:50,776 INFO L93 Difference]: Finished difference Result 1313 states and 3249 transitions. [2022-01-18 03:20:50,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:20:50,776 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 03:20:50,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:50,777 INFO L225 Difference]: With dead ends: 1313 [2022-01-18 03:20:50,778 INFO L226 Difference]: Without dead ends: 1203 [2022-01-18 03:20:50,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=2701, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:20:50,778 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 268 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:50,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2792 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:20:50,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-18 03:20:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1135. [2022-01-18 03:20:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.495590828924162) internal successors, (2830), 1134 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 03:20:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2830 transitions. [2022-01-18 03:20:50,788 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2830 transitions. Word has length 79 [2022-01-18 03:20:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:50,788 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2830 transitions. [2022-01-18 03:20:50,789 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 03:20:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2830 transitions. [2022-01-18 03:20:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:50,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:50,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:50,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-01-18 03:20:50,790 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1012373108, now seen corresponding path program 366 times [2022-01-18 03:20:50,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:50,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285818213] [2022-01-18 03:20:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:50,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:51,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:51,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285818213] [2022-01-18 03:20:51,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285818213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:51,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:51,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:51,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192805089] [2022-01-18 03:20:51,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:51,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:51,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:51,110 INFO L87 Difference]: Start difference. First operand 1135 states and 2830 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 03:20:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:52,297 INFO L93 Difference]: Finished difference Result 1329 states and 3284 transitions. [2022-01-18 03:20:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:20:52,297 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 03:20:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:52,299 INFO L225 Difference]: With dead ends: 1329 [2022-01-18 03:20:52,299 INFO L226 Difference]: Without dead ends: 1155 [2022-01-18 03:20:52,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 03:20:52,299 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 297 mSDsluCounter, 2570 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:52,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2626 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:20:52,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-18 03:20:52,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1119. [2022-01-18 03:20:52,308 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 03:20:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2790 transitions. [2022-01-18 03:20:52,310 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2790 transitions. Word has length 79 [2022-01-18 03:20:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:52,310 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2790 transitions. [2022-01-18 03:20:52,310 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 03:20:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2790 transitions. [2022-01-18 03:20:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:52,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:52,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:52,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-01-18 03:20:52,311 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:52,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:52,311 INFO L85 PathProgramCache]: Analyzing trace with hash -570683090, now seen corresponding path program 367 times [2022-01-18 03:20:52,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:52,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251877003] [2022-01-18 03:20:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:52,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:52,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:52,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251877003] [2022-01-18 03:20:52,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251877003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:52,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:52,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:52,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823780507] [2022-01-18 03:20:52,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:52,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:52,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:52,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:52,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:52,640 INFO L87 Difference]: Start difference. First operand 1119 states and 2790 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 03:20:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:54,970 INFO L93 Difference]: Finished difference Result 1350 states and 3344 transitions. [2022-01-18 03:20:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 03:20:54,970 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 03:20:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:54,972 INFO L225 Difference]: With dead ends: 1350 [2022-01-18 03:20:54,972 INFO L226 Difference]: Without dead ends: 1252 [2022-01-18 03:20:54,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=2706, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:20:54,973 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 299 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:54,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 2527 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 03:20:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-01-18 03:20:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1143. [2022-01-18 03:20:54,982 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 03:20:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2848 transitions. [2022-01-18 03:20:54,983 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2848 transitions. Word has length 79 [2022-01-18 03:20:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:54,983 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2848 transitions. [2022-01-18 03:20:54,983 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 03:20:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2848 transitions. [2022-01-18 03:20:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:54,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:54,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:54,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-01-18 03:20:54,985 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash 745849802, now seen corresponding path program 368 times [2022-01-18 03:20:54,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:54,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914001399] [2022-01-18 03:20:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:54,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:20:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:20:55,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:20:55,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914001399] [2022-01-18 03:20:55,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914001399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:20:55,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:20:55,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:20:55,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386307698] [2022-01-18 03:20:55,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:20:55,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:20:55,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:20:55,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:20:55,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:20:55,287 INFO L87 Difference]: Start difference. First operand 1143 states and 2848 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 03:20:59,121 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 03:20:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:20:59,732 INFO L93 Difference]: Finished difference Result 1306 states and 3227 transitions. [2022-01-18 03:20:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:20:59,732 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 03:20:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:20:59,734 INFO L225 Difference]: With dead ends: 1306 [2022-01-18 03:20:59,734 INFO L226 Difference]: Without dead ends: 1167 [2022-01-18 03:20:59,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 03:20:59,734 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 322 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:20:59,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2506 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 941 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-01-18 03:20:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-01-18 03:20:59,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1115. [2022-01-18 03:20:59,743 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 03:20:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2779 transitions. [2022-01-18 03:20:59,744 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2779 transitions. Word has length 79 [2022-01-18 03:20:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:20:59,744 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2779 transitions. [2022-01-18 03:20:59,744 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 03:20:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2779 transitions. [2022-01-18 03:20:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:20:59,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:20:59,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:20:59,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2022-01-18 03:20:59,746 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:20:59,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:20:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash 7879752, now seen corresponding path program 369 times [2022-01-18 03:20:59,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:20:59,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083770992] [2022-01-18 03:20:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:20:59,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:20:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:00,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:00,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083770992] [2022-01-18 03:21:00,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083770992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:00,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:00,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 03:21:00,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743090876] [2022-01-18 03:21:00,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:00,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 03:21:00,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:00,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 03:21:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-18 03:21:00,060 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 03:21:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:02,076 INFO L93 Difference]: Finished difference Result 1430 states and 3547 transitions. [2022-01-18 03:21:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 03:21:02,077 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 03:21:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:02,078 INFO L225 Difference]: With dead ends: 1430 [2022-01-18 03:21:02,078 INFO L226 Difference]: Without dead ends: 1194 [2022-01-18 03:21:02,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:21:02,079 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 301 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:02,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2449 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 03:21:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-01-18 03:21:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1087. [2022-01-18 03:21:02,087 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 03:21:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 2718 transitions. [2022-01-18 03:21:02,088 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 2718 transitions. Word has length 79 [2022-01-18 03:21:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:02,088 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 2718 transitions. [2022-01-18 03:21:02,088 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 03:21:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 2718 transitions. [2022-01-18 03:21:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:02,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:02,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:02,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2022-01-18 03:21:02,090 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash -749199738, now seen corresponding path program 370 times [2022-01-18 03:21:02,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:02,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350892272] [2022-01-18 03:21:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:02,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:02,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:02,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350892272] [2022-01-18 03:21:02,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350892272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:02,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:02,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:21:02,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176400148] [2022-01-18 03:21:02,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:02,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:21:02,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:02,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:21:02,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:21:02,433 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 03:21:05,736 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 03:21:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:06,355 INFO L93 Difference]: Finished difference Result 1441 states and 3621 transitions. [2022-01-18 03:21:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 03:21:06,355 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 03:21:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:06,357 INFO L225 Difference]: With dead ends: 1441 [2022-01-18 03:21:06,357 INFO L226 Difference]: Without dead ends: 1311 [2022-01-18 03:21:06,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=344, Invalid=4078, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 03:21:06,358 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 429 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:06,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 2781 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1126 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 03:21:06,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-01-18 03:21:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1139. [2022-01-18 03:21:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.507029876977153) internal successors, (2853), 1138 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:21:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2853 transitions. [2022-01-18 03:21:06,368 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2853 transitions. Word has length 79 [2022-01-18 03:21:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:06,368 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2853 transitions. [2022-01-18 03:21:06,368 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 03:21:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2853 transitions. [2022-01-18 03:21:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:06,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:06,369 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 03:21:06,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2022-01-18 03:21:06,370 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1602590904, now seen corresponding path program 371 times [2022-01-18 03:21:06,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:06,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79536099] [2022-01-18 03:21:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:06,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:06,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:06,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79536099] [2022-01-18 03:21:06,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79536099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:06,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:06,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:21:06,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874565420] [2022-01-18 03:21:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:06,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:21:06,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:21:06,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:21:06,716 INFO L87 Difference]: Start difference. First operand 1139 states and 2853 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 03:21:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:08,845 INFO L93 Difference]: Finished difference Result 1428 states and 3579 transitions. [2022-01-18 03:21:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 03:21:08,845 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 03:21:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:08,847 INFO L225 Difference]: With dead ends: 1428 [2022-01-18 03:21:08,847 INFO L226 Difference]: Without dead ends: 1330 [2022-01-18 03:21:08,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:21:08,848 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 359 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:08,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2998 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:21:08,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-01-18 03:21:08,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1179. [2022-01-18 03:21:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.5118845500848894) internal successors, (2959), 1178 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:21:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2959 transitions. [2022-01-18 03:21:08,859 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2959 transitions. Word has length 79 [2022-01-18 03:21:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:08,859 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 2959 transitions. [2022-01-18 03:21:08,859 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 03:21:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2959 transitions. [2022-01-18 03:21:08,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:08,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:08,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:08,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-01-18 03:21:08,860 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash -888353626, now seen corresponding path program 372 times [2022-01-18 03:21:08,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:08,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552488134] [2022-01-18 03:21:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:08,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:09,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:09,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552488134] [2022-01-18 03:21:09,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552488134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:09,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:09,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:21:09,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789614254] [2022-01-18 03:21:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:09,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:21:09,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:09,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:21:09,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:21:09,233 INFO L87 Difference]: Start difference. First operand 1179 states and 2959 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 03:21:11,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:11,558 INFO L93 Difference]: Finished difference Result 1411 states and 3530 transitions. [2022-01-18 03:21:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 03:21:11,558 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 03:21:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:11,560 INFO L225 Difference]: With dead ends: 1411 [2022-01-18 03:21:11,560 INFO L226 Difference]: Without dead ends: 1298 [2022-01-18 03:21:11,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:21:11,560 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 385 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:11,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 2910 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 03:21:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2022-01-18 03:21:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1167. [2022-01-18 03:21:11,569 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 03:21:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 2922 transitions. [2022-01-18 03:21:11,570 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 2922 transitions. Word has length 79 [2022-01-18 03:21:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:11,571 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 2922 transitions. [2022-01-18 03:21:11,571 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 03:21:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 2922 transitions. [2022-01-18 03:21:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:11,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:11,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:11,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-01-18 03:21:11,572 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash -562905400, now seen corresponding path program 373 times [2022-01-18 03:21:11,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:11,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069512750] [2022-01-18 03:21:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:11,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:11,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:11,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069512750] [2022-01-18 03:21:11,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069512750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:11,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:11,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:21:11,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341142546] [2022-01-18 03:21:11,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:11,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:21:11,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:21:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:21:11,917 INFO L87 Difference]: Start difference. First operand 1167 states and 2922 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 03:21:14,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 03:21:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:14,895 INFO L93 Difference]: Finished difference Result 1417 states and 3535 transitions. [2022-01-18 03:21:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 03:21:14,895 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 03:21:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:14,897 INFO L225 Difference]: With dead ends: 1417 [2022-01-18 03:21:14,897 INFO L226 Difference]: Without dead ends: 1267 [2022-01-18 03:21:14,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=3484, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:21:14,897 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 318 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:14,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 2940 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 03:21:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-18 03:21:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1163. [2022-01-18 03:21:14,906 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 03:21:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2907 transitions. [2022-01-18 03:21:14,908 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2907 transitions. Word has length 79 [2022-01-18 03:21:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:14,908 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2907 transitions. [2022-01-18 03:21:14,908 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 03:21:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2907 transitions. [2022-01-18 03:21:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:14,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:14,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:14,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-01-18 03:21:14,909 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:14,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash 298676934, now seen corresponding path program 374 times [2022-01-18 03:21:14,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:14,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211678909] [2022-01-18 03:21:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:14,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:15,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:15,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211678909] [2022-01-18 03:21:15,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211678909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:15,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:15,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:15,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162638306] [2022-01-18 03:21:15,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:15,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:15,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:15,234 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 03:21:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:17,794 INFO L93 Difference]: Finished difference Result 1406 states and 3498 transitions. [2022-01-18 03:21:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:21:17,794 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 03:21:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:17,796 INFO L225 Difference]: With dead ends: 1406 [2022-01-18 03:21:17,796 INFO L226 Difference]: Without dead ends: 1308 [2022-01-18 03:21:17,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3021, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:21:17,796 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 341 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:17,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 2689 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 03:21:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-01-18 03:21:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1187. [2022-01-18 03:21:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.5) internal successors, (2965), 1186 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:21:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 2965 transitions. [2022-01-18 03:21:17,807 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 2965 transitions. Word has length 79 [2022-01-18 03:21:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:17,807 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 2965 transitions. [2022-01-18 03:21:17,807 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 03:21:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 2965 transitions. [2022-01-18 03:21:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:17,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:17,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:17,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2022-01-18 03:21:17,808 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1615209826, now seen corresponding path program 375 times [2022-01-18 03:21:17,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:17,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282277223] [2022-01-18 03:21:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:17,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:18,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:18,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282277223] [2022-01-18 03:21:18,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282277223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:18,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:18,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:18,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865067308] [2022-01-18 03:21:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:18,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:18,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:18,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:18,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:18,109 INFO L87 Difference]: Start difference. First operand 1187 states and 2965 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 03:21:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:19,523 INFO L93 Difference]: Finished difference Result 1374 states and 3410 transitions. [2022-01-18 03:21:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:21:19,524 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 03:21:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:19,525 INFO L225 Difference]: With dead ends: 1374 [2022-01-18 03:21:19,525 INFO L226 Difference]: Without dead ends: 1215 [2022-01-18 03:21:19,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:21:19,526 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 290 mSDsluCounter, 2693 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:19,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2750 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:21:19,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-01-18 03:21:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1139. [2022-01-18 03:21:19,535 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 03:21:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2841 transitions. [2022-01-18 03:21:19,536 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2841 transitions. Word has length 79 [2022-01-18 03:21:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:19,536 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2841 transitions. [2022-01-18 03:21:19,536 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 03:21:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2841 transitions. [2022-01-18 03:21:19,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:19,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:19,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:19,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2022-01-18 03:21:19,538 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:19,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1832597084, now seen corresponding path program 376 times [2022-01-18 03:21:19,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:19,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852358985] [2022-01-18 03:21:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:19,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:19,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:19,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852358985] [2022-01-18 03:21:19,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852358985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:19,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:19,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:19,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883140125] [2022-01-18 03:21:19,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:19,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:19,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:19,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:19,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:19,886 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 03:21:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:21,269 INFO L93 Difference]: Finished difference Result 1361 states and 3385 transitions. [2022-01-18 03:21:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:21:21,269 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 03:21:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:21,271 INFO L225 Difference]: With dead ends: 1361 [2022-01-18 03:21:21,271 INFO L226 Difference]: Without dead ends: 1223 [2022-01-18 03:21:21,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=268, Invalid=2812, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:21:21,271 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 290 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:21,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2594 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:21:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-18 03:21:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1139. [2022-01-18 03:21:21,280 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 03:21:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2849 transitions. [2022-01-18 03:21:21,281 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2849 transitions. Word has length 79 [2022-01-18 03:21:21,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:21,281 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2849 transitions. [2022-01-18 03:21:21,282 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 03:21:21,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2849 transitions. [2022-01-18 03:21:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:21,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:21,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:21,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-01-18 03:21:21,283 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash -774483606, now seen corresponding path program 377 times [2022-01-18 03:21:21,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:21,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110494823] [2022-01-18 03:21:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:21,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:21,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:21,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110494823] [2022-01-18 03:21:21,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110494823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:21,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:21,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554645555] [2022-01-18 03:21:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:21,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:21,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:21,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:21,638 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 03:21:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:23,029 INFO L93 Difference]: Finished difference Result 1348 states and 3355 transitions. [2022-01-18 03:21:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:21:23,029 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 03:21:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:23,031 INFO L225 Difference]: With dead ends: 1348 [2022-01-18 03:21:23,031 INFO L226 Difference]: Without dead ends: 1250 [2022-01-18 03:21:23,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=277, Invalid=2915, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:21:23,032 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 287 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:23,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 2897 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:21:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-01-18 03:21:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1143. [2022-01-18 03:21:23,040 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 03:21:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2856 transitions. [2022-01-18 03:21:23,042 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2856 transitions. Word has length 79 [2022-01-18 03:21:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:23,042 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 2856 transitions. [2022-01-18 03:21:23,042 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 03:21:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2856 transitions. [2022-01-18 03:21:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:23,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:23,043 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 03:21:23,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-01-18 03:21:23,043 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash -60246328, now seen corresponding path program 378 times [2022-01-18 03:21:23,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:23,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449172585] [2022-01-18 03:21:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:23,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:23,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:23,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449172585] [2022-01-18 03:21:23,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449172585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:23,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:23,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:23,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180987170] [2022-01-18 03:21:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:23,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:23,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:23,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:23,384 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 03:21:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:24,760 INFO L93 Difference]: Finished difference Result 1316 states and 3271 transitions. [2022-01-18 03:21:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:21:24,760 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 03:21:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:24,762 INFO L225 Difference]: With dead ends: 1316 [2022-01-18 03:21:24,762 INFO L226 Difference]: Without dead ends: 1207 [2022-01-18 03:21:24,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=2808, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:21:24,762 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 301 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:24,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 2808 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:21:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-01-18 03:21:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1135. [2022-01-18 03:21:24,771 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 03:21:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2838 transitions. [2022-01-18 03:21:24,772 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2838 transitions. Word has length 79 [2022-01-18 03:21:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:24,772 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2838 transitions. [2022-01-18 03:21:24,772 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 03:21:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2838 transitions. [2022-01-18 03:21:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:24,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:24,774 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 03:21:24,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2022-01-18 03:21:24,774 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash 410444486, now seen corresponding path program 379 times [2022-01-18 03:21:24,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:24,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559235554] [2022-01-18 03:21:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:24,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:25,095 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 03:21:25,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:25,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559235554] [2022-01-18 03:21:25,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559235554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:25,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:25,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:25,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475542122] [2022-01-18 03:21:25,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:25,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:25,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:25,096 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 03:21:28,475 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 03:21:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:28,669 INFO L93 Difference]: Finished difference Result 1370 states and 3407 transitions. [2022-01-18 03:21:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 03:21:28,669 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 03:21:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:28,671 INFO L225 Difference]: With dead ends: 1370 [2022-01-18 03:21:28,671 INFO L226 Difference]: Without dead ends: 1272 [2022-01-18 03:21:28,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=3019, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:21:28,671 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 339 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:28,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 2756 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1071 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 03:21:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-01-18 03:21:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1159. [2022-01-18 03:21:28,680 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 03:21:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2896 transitions. [2022-01-18 03:21:28,681 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2896 transitions. Word has length 79 [2022-01-18 03:21:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:28,681 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2896 transitions. [2022-01-18 03:21:28,681 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 03:21:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2896 transitions. [2022-01-18 03:21:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:28,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:28,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:28,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2022-01-18 03:21:28,682 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1726977378, now seen corresponding path program 380 times [2022-01-18 03:21:28,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:28,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886746347] [2022-01-18 03:21:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:28,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:29,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:29,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886746347] [2022-01-18 03:21:29,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886746347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:29,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:29,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:29,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550061319] [2022-01-18 03:21:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:29,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:29,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:29,006 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 03:21:30,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:30,510 INFO L93 Difference]: Finished difference Result 1338 states and 3319 transitions. [2022-01-18 03:21:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:21:30,510 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 03:21:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:30,512 INFO L225 Difference]: With dead ends: 1338 [2022-01-18 03:21:30,512 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 03:21:30,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:21:30,512 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 290 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:30,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2821 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:21:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 03:21:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1127. [2022-01-18 03:21:30,521 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 03:21:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2816 transitions. [2022-01-18 03:21:30,522 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2816 transitions. Word has length 79 [2022-01-18 03:21:30,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:30,522 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2816 transitions. [2022-01-18 03:21:30,522 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 03:21:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2816 transitions. [2022-01-18 03:21:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:30,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:30,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:30,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2022-01-18 03:21:30,523 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1244328356, now seen corresponding path program 381 times [2022-01-18 03:21:30,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:30,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982172851] [2022-01-18 03:21:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:30,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:30,865 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 03:21:30,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982172851] [2022-01-18 03:21:30,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982172851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:30,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:30,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:21:30,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831139392] [2022-01-18 03:21:30,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:30,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:21:30,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:21:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:21:30,866 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 03:21:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:33,037 INFO L93 Difference]: Finished difference Result 1398 states and 3480 transitions. [2022-01-18 03:21:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 03:21:33,037 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 03:21:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:33,039 INFO L225 Difference]: With dead ends: 1398 [2022-01-18 03:21:33,039 INFO L226 Difference]: Without dead ends: 1300 [2022-01-18 03:21:33,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=314, Invalid=3592, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 03:21:33,039 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 361 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:33,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 2919 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 03:21:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-01-18 03:21:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1155. [2022-01-18 03:21:33,048 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 03:21:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 2885 transitions. [2022-01-18 03:21:33,050 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 2885 transitions. Word has length 79 [2022-01-18 03:21:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:33,050 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 2885 transitions. [2022-01-18 03:21:33,050 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 03:21:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 2885 transitions. [2022-01-18 03:21:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:33,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:33,051 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 03:21:33,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2022-01-18 03:21:33,051 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1734106048, now seen corresponding path program 382 times [2022-01-18 03:21:33,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:33,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503972889] [2022-01-18 03:21:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:33,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:33,391 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 03:21:33,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:33,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503972889] [2022-01-18 03:21:33,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503972889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:33,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:33,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 03:21:33,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535570494] [2022-01-18 03:21:33,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:33,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 03:21:33,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:33,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 03:21:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-01-18 03:21:33,392 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 03:21:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:34,951 INFO L93 Difference]: Finished difference Result 1354 states and 3363 transitions. [2022-01-18 03:21:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 03:21:34,951 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 03:21:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:34,953 INFO L225 Difference]: With dead ends: 1354 [2022-01-18 03:21:34,953 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 03:21:34,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=306, Invalid=3476, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:21:34,953 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 315 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:34,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 3008 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:21:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 03:21:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1131. [2022-01-18 03:21:34,962 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 03:21:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2823 transitions. [2022-01-18 03:21:34,963 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2823 transitions. Word has length 79 [2022-01-18 03:21:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:34,963 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2823 transitions. [2022-01-18 03:21:34,963 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 03:21:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2823 transitions. [2022-01-18 03:21:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:34,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:34,965 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 03:21:34,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-01-18 03:21:34,965 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1430346218, now seen corresponding path program 383 times [2022-01-18 03:21:34,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:34,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415915447] [2022-01-18 03:21:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:34,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:35,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:35,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415915447] [2022-01-18 03:21:35,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415915447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:35,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:35,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:35,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703293471] [2022-01-18 03:21:35,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:35,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:35,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:35,292 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 03:21:37,568 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 03:21:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:38,840 INFO L93 Difference]: Finished difference Result 1357 states and 3365 transitions. [2022-01-18 03:21:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 03:21:38,840 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 03:21:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:38,841 INFO L225 Difference]: With dead ends: 1357 [2022-01-18 03:21:38,841 INFO L226 Difference]: Without dead ends: 1183 [2022-01-18 03:21:38,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=2827, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:21:38,842 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 342 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:38,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 2820 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1046 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 03:21:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-01-18 03:21:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1115. [2022-01-18 03:21:38,850 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 03:21:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2783 transitions. [2022-01-18 03:21:38,852 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2783 transitions. Word has length 79 [2022-01-18 03:21:38,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:38,852 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2783 transitions. [2022-01-18 03:21:38,852 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 03:21:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2783 transitions. [2022-01-18 03:21:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:38,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:38,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:38,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-01-18 03:21:38,853 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:38,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1872036236, now seen corresponding path program 384 times [2022-01-18 03:21:38,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:38,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708776565] [2022-01-18 03:21:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:38,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:39,181 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 03:21:39,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:39,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708776565] [2022-01-18 03:21:39,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708776565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:39,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:39,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:39,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123653660] [2022-01-18 03:21:39,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:39,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:39,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:39,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:39,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:39,182 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 03:21:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:40,758 INFO L93 Difference]: Finished difference Result 1374 states and 3414 transitions. [2022-01-18 03:21:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 03:21:40,758 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 03:21:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:40,760 INFO L225 Difference]: With dead ends: 1374 [2022-01-18 03:21:40,760 INFO L226 Difference]: Without dead ends: 1276 [2022-01-18 03:21:40,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 03:21:40,761 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 295 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:40,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2677 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:21:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2022-01-18 03:21:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1151. [2022-01-18 03:21:40,771 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 03:21:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2874 transitions. [2022-01-18 03:21:40,772 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2874 transitions. Word has length 79 [2022-01-18 03:21:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:40,772 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2874 transitions. [2022-01-18 03:21:40,772 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 03:21:40,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2874 transitions. [2022-01-18 03:21:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:40,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:40,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:40,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-01-18 03:21:40,774 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:40,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:40,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1106398168, now seen corresponding path program 385 times [2022-01-18 03:21:40,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:40,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768261012] [2022-01-18 03:21:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:40,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:41,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:41,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768261012] [2022-01-18 03:21:41,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768261012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:41,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:41,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 03:21:41,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784596518] [2022-01-18 03:21:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:41,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 03:21:41,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 03:21:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-01-18 03:21:41,088 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 03:21:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:42,530 INFO L93 Difference]: Finished difference Result 1330 states and 3297 transitions. [2022-01-18 03:21:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 03:21:42,530 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 03:21:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:42,532 INFO L225 Difference]: With dead ends: 1330 [2022-01-18 03:21:42,532 INFO L226 Difference]: Without dead ends: 1195 [2022-01-18 03:21:42,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=277, Invalid=3029, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:21:42,533 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 297 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:42,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 2656 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:21:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-01-18 03:21:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1127. [2022-01-18 03:21:42,542 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 03:21:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2812 transitions. [2022-01-18 03:21:42,544 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2812 transitions. Word has length 79 [2022-01-18 03:21:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:42,544 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2812 transitions. [2022-01-18 03:21:42,544 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 03:21:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2812 transitions. [2022-01-18 03:21:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:42,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:42,545 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 03:21:42,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-01-18 03:21:42,545 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:42,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:42,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2058054098, now seen corresponding path program 386 times [2022-01-18 03:21:42,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:42,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683332281] [2022-01-18 03:21:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:42,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:42,862 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 03:21:42,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:42,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683332281] [2022-01-18 03:21:42,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683332281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:42,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:42,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:21:42,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356922936] [2022-01-18 03:21:42,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:42,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:21:42,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:21:42,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:21:42,863 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 03:21:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:44,116 INFO L93 Difference]: Finished difference Result 1341 states and 3321 transitions. [2022-01-18 03:21:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 03:21:44,116 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 03:21:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:44,118 INFO L225 Difference]: With dead ends: 1341 [2022-01-18 03:21:44,118 INFO L226 Difference]: Without dead ends: 1179 [2022-01-18 03:21:44,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=236, Invalid=2416, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:21:44,118 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 325 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:44,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2642 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 03:21:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-01-18 03:21:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1123. [2022-01-18 03:21:44,127 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 03:21:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2801 transitions. [2022-01-18 03:21:44,128 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2801 transitions. Word has length 79 [2022-01-18 03:21:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:44,129 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2801 transitions. [2022-01-18 03:21:44,129 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 03:21:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2801 transitions. [2022-01-18 03:21:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:44,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:44,130 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 03:21:44,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2022-01-18 03:21:44,130 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1844368218, now seen corresponding path program 387 times [2022-01-18 03:21:44,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:44,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675071592] [2022-01-18 03:21:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:44,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:44,461 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 03:21:44,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:44,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675071592] [2022-01-18 03:21:44,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675071592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:44,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:44,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:21:44,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240074823] [2022-01-18 03:21:44,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:44,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:21:44,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:21:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:21:44,462 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 03:21:45,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:45,850 INFO L93 Difference]: Finished difference Result 1446 states and 3591 transitions. [2022-01-18 03:21:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:21:45,850 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 03:21:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:45,851 INFO L225 Difference]: With dead ends: 1446 [2022-01-18 03:21:45,851 INFO L226 Difference]: Without dead ends: 1218 [2022-01-18 03:21:45,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=234, Invalid=2418, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 03:21:45,852 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 346 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:45,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 2583 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 03:21:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-01-18 03:21:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1095. [2022-01-18 03:21:45,861 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 03:21:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 2736 transitions. [2022-01-18 03:21:45,862 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 2736 transitions. Word has length 79 [2022-01-18 03:21:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:45,862 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 2736 transitions. [2022-01-18 03:21:45,862 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 03:21:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 2736 transitions. [2022-01-18 03:21:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:45,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:45,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:21:45,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2022-01-18 03:21:45,864 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash -630957972, now seen corresponding path program 388 times [2022-01-18 03:21:45,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:45,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694559617] [2022-01-18 03:21:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:45,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:46,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:46,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694559617] [2022-01-18 03:21:46,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694559617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:46,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:46,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:21:46,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711783933] [2022-01-18 03:21:46,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:46,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:21:46,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:46,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:21:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:21:46,184 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 03:21:47,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:21:47,426 INFO L93 Difference]: Finished difference Result 1349 states and 3364 transitions. [2022-01-18 03:21:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:21:47,426 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 03:21:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:21:47,428 INFO L225 Difference]: With dead ends: 1349 [2022-01-18 03:21:47,428 INFO L226 Difference]: Without dead ends: 1219 [2022-01-18 03:21:47,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 03:21:47,428 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 03:21:47,429 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 03:21:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-01-18 03:21:47,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1151. [2022-01-18 03:21:47,437 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 03:21:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 2882 transitions. [2022-01-18 03:21:47,439 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 2882 transitions. Word has length 79 [2022-01-18 03:21:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:21:47,439 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 2882 transitions. [2022-01-18 03:21:47,439 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 03:21:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 2882 transitions. [2022-01-18 03:21:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 03:21:47,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:21:47,440 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 03:21:47,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2022-01-18 03:21:47,440 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:21:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:21:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1484349138, now seen corresponding path program 389 times [2022-01-18 03:21:47,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:21:47,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379182700] [2022-01-18 03:21:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:21:47,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:21:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:21:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:21:47,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:21:47,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379182700] [2022-01-18 03:21:47,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379182700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:21:47,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:21:47,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 03:21:47,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040882807] [2022-01-18 03:21:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:21:47,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 03:21:47,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:21:47,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 03:21:47,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-18 03:21:47,761 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) Received shutdown request... [2022-01-18 03:21:48,087 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 03:21:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 03:21:48,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2022-01-18 03:21:48,182 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 77 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:21:48,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 949 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 03:21:48,183 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 03:21:48,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2022-01-18 03:21:48,183 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1151states) and FLOYD_HOARE automaton (currently 10 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 25 known predicates. [2022-01-18 03:21:48,184 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 03:21:48,185 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 03:21:48,186 INFO L732 BasicCegarLoop]: Path program histogram: [389] [2022-01-18 03:21:48,188 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:21:48,188 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:21:48,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:21:48 BasicIcfg [2022-01-18 03:21:48,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:21:48,189 INFO L158 Benchmark]: Toolchain (without parser) took 789238.15ms. Allocated memory was 354.4MB in the beginning and 524.3MB in the end (delta: 169.9MB). Free memory was 300.3MB in the beginning and 431.6MB in the end (delta: -131.3MB). Peak memory consumption was 41.6MB. Max. memory is 16.0GB. [2022-01-18 03:21:48,189 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 354.4MB. Free memory is still 317.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:21:48,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.33ms. Allocated memory was 354.4MB in the beginning and 436.2MB in the end (delta: 81.8MB). Free memory was 300.1MB in the beginning and 410.2MB in the end (delta: -110.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. [2022-01-18 03:21:48,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.37ms. Allocated memory is still 436.2MB. Free memory was 410.2MB in the beginning and 409.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:21:48,190 INFO L158 Benchmark]: Boogie Preprocessor took 12.93ms. Allocated memory is still 436.2MB. Free memory was 409.2MB in the beginning and 407.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:21:48,190 INFO L158 Benchmark]: RCFGBuilder took 273.72ms. Allocated memory is still 436.2MB. Free memory was 407.7MB in the beginning and 393.5MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 03:21:48,190 INFO L158 Benchmark]: TraceAbstraction took 788732.48ms. Allocated memory was 436.2MB in the beginning and 524.3MB in the end (delta: 88.1MB). Free memory was 392.4MB in the beginning and 431.6MB in the end (delta: -39.2MB). Peak memory consumption was 51.0MB. Max. memory is 16.0GB. [2022-01-18 03:21:48,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 354.4MB. Free memory is still 317.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 180.33ms. Allocated memory was 354.4MB in the beginning and 436.2MB in the end (delta: 81.8MB). Free memory was 300.1MB in the beginning and 410.2MB in the end (delta: -110.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.37ms. Allocated memory is still 436.2MB. Free memory was 410.2MB in the beginning and 409.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 12.93ms. Allocated memory is still 436.2MB. Free memory was 409.2MB in the beginning and 407.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 273.72ms. Allocated memory is still 436.2MB. Free memory was 407.7MB in the beginning and 393.5MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 788732.48ms. Allocated memory was 436.2MB in the beginning and 524.3MB in the end (delta: 88.1MB). Free memory was 392.4MB in the beginning and 431.6MB in the end (delta: -39.2MB). Peak memory consumption was 51.0MB. 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 (1151states) and FLOYD_HOARE automaton (currently 10 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 25 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 (1151states) and FLOYD_HOARE automaton (currently 10 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 25 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 (1151states) and FLOYD_HOARE automaton (currently 10 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 25 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: 788.7s, OverallIterations: 389, TraceHistogramMax: 1, PathProgramHistogramMax: 389, EmptinessCheckTime: 0.4s, AutomataDifference: 663.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 51 mSolverCounterUnknown, 120247 SdHoareTripleChecker+Valid, 427.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120247 mSDsluCounter, 1054327 SdHoareTripleChecker+Invalid, 399.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1034764 mSDsCounter, 13767 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 406059 IncrementalHoareTripleChecker+Invalid, 419877 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13767 mSolverCounterUnsat, 70286 mSDtfsCounter, 406059 mSolverCounterSat, 1.8s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21246 GetRequests, 809 SyntacticMatches, 1017 SemanticMatches, 19419 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218000 ImplicationChecksByTransitivity, 313.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1223occurred in iteration=334, InterpolantAutomatonStates: 16183, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 388 MinimizatonAttempts, 37149 StatesRemovedByMinimization, 385 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 116.3s InterpolantComputationTime, 30731 NumberOfCodeBlocks, 30731 NumberOfCodeBlocksAsserted, 389 NumberOfCheckSat, 30342 ConstructedInterpolants, 0 QuantifiedInterpolants, 500037 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 389 InterpolantComputations, 389 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