/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/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 01:57:58,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 01:57:58,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 01:57:58,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 01:57:58,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 01:57:58,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 01:57:58,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 01:57:58,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 01:57:58,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 01:57:58,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 01:57:58,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 01:57:58,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 01:57:58,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 01:57:58,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 01:57:58,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 01:57:58,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 01:57:58,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 01:57:58,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 01:57:58,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 01:57:58,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 01:57:58,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 01:57:58,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 01:57:58,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 01:57:58,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 01:57:58,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 01:57:58,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 01:57:58,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 01:57:58,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 01:57:58,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 01:57:58,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 01:57:58,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 01:57:58,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 01:57:58,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 01:57:58,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 01:57:58,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 01:57:58,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 01:57:58,134 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 01:57:58,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 01:57:58,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 01:57:58,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 01:57:58,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 01:57:58,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 01:57:58,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 01:57:58,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 01:57:58,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 01:57:58,157 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 01:57:58,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 01:57:58,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 01:57:58,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 01:57:58,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 01:57:58,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 01:57:58,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 01:57:58,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:57:58,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 01:57:58,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 01:57:58,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 01:57:58,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 01:57:58,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 01:57:58,159 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 01:57:58,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 01:57:58,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 01:57:58,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 01:57:58,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 01:57:58,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 01:57:58,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 01:57:58,349 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 01:57:58,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2022-01-18 01:57:58,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/367b5f652/b674249d5c2642e9a21f9aced0362258/FLAG041fe6dee [2022-01-18 01:57:58,744 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 01:57:58,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2022-01-18 01:57:58,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/367b5f652/b674249d5c2642e9a21f9aced0362258/FLAG041fe6dee [2022-01-18 01:57:58,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/367b5f652/b674249d5c2642e9a21f9aced0362258 [2022-01-18 01:57:58,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 01:57:58,758 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 01:57:58,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 01:57:58,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 01:57:58,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 01:57:58,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:57:58" (1/1) ... [2022-01-18 01:57:58,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3c4537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:58, skipping insertion in model container [2022-01-18 01:57:58,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:57:58" (1/1) ... [2022-01-18 01:57:58,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 01:57:58,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 01:57:58,977 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/popl20-figure1-alt.wvr.c[2087,2100] [2022-01-18 01:57:58,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:57:58,984 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 01:57:59,003 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/popl20-figure1-alt.wvr.c[2087,2100] [2022-01-18 01:57:59,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:57:59,018 INFO L208 MainTranslator]: Completed translation [2022-01-18 01:57:59,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59 WrapperNode [2022-01-18 01:57:59,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 01:57:59,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 01:57:59,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 01:57:59,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 01:57:59,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,044 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2022-01-18 01:57:59,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 01:57:59,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 01:57:59,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 01:57:59,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 01:57:59,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 01:57:59,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 01:57:59,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 01:57:59,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 01:57:59,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (1/1) ... [2022-01-18 01:57:59,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:57:59,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:57:59,097 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 01:57:59,117 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 01:57:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 01:57:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 01:57:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 01:57:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 01:57:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 01:57:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 01:57:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 01:57:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 01:57:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 01:57:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 01:57:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 01:57:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 01:57:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 01:57:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 01:57:59,136 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 01:57:59,212 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 01:57:59,213 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 01:57:59,344 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 01:57:59,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 01:57:59,373 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 01:57:59,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:57:59 BoogieIcfgContainer [2022-01-18 01:57:59,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 01:57:59,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 01:57:59,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 01:57:59,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 01:57:59,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:57:58" (1/3) ... [2022-01-18 01:57:59,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e10899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:57:59, skipping insertion in model container [2022-01-18 01:57:59,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:57:59" (2/3) ... [2022-01-18 01:57:59,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e10899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:57:59, skipping insertion in model container [2022-01-18 01:57:59,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:57:59" (3/3) ... [2022-01-18 01:57:59,380 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2022-01-18 01:57:59,384 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 01:57:59,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 01:57:59,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 01:57:59,384 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 01:57:59,409 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,410 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,410 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,410 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,411 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,411 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,412 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,412 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,413 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,413 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,415 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,416 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,417 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,417 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,417 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,417 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,417 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,419 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,423 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:57:59,427 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 01:57:59,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 01:57:59,461 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 01:57:59,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 01:57:59,469 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 89 transitions, 194 flow [2022-01-18 01:57:59,521 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 449 states, 448 states have (on average 2.6339285714285716) internal successors, (1180), 448 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:57:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 449 states, 448 states have (on average 2.6339285714285716) internal successors, (1180), 448 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:57:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 01:57:59,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:57:59,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:57:59,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:57:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:57:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1950336427, now seen corresponding path program 1 times [2022-01-18 01:57:59,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:57:59,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917912015] [2022-01-18 01:57:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:57:59,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:57:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:57:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:57:59,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:57:59,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917912015] [2022-01-18 01:57:59,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917912015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:57:59,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:57:59,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 01:57:59,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723412023] [2022-01-18 01:57:59,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:57:59,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 01:57:59,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:57:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 01:57:59,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:57:59,744 INFO L87 Difference]: Start difference. First operand has 449 states, 448 states have (on average 2.6339285714285716) internal successors, (1180), 448 states have internal predecessors, (1180), 0 states have call successors, (0), 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 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:57:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:57:59,776 INFO L93 Difference]: Finished difference Result 449 states and 1097 transitions. [2022-01-18 01:57:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 01:57:59,782 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 01:57:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:57:59,794 INFO L225 Difference]: With dead ends: 449 [2022-01-18 01:57:59,794 INFO L226 Difference]: Without dead ends: 447 [2022-01-18 01:57:59,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:57:59,799 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:57:59,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:57:59,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-01-18 01:57:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-01-18 01:57:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 2.4551569506726456) internal successors, (1095), 446 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:57:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1095 transitions. [2022-01-18 01:57:59,856 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1095 transitions. Word has length 62 [2022-01-18 01:57:59,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:57:59,857 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 1095 transitions. [2022-01-18 01:57:59,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:57:59,857 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1095 transitions. [2022-01-18 01:57:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 01:57:59,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:57:59,860 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] [2022-01-18 01:57:59,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 01:57:59,861 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:57:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:57:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1985794763, now seen corresponding path program 1 times [2022-01-18 01:57:59,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:57:59,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412228758] [2022-01-18 01:57:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:57:59,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:57:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:00,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:00,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412228758] [2022-01-18 01:58:00,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412228758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:58:00,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:58:00,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 01:58:00,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42353879] [2022-01-18 01:58:00,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:58:00,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 01:58:00,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:00,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 01:58:00,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:58:00,415 INFO L87 Difference]: Start difference. First operand 447 states and 1095 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:00,734 INFO L93 Difference]: Finished difference Result 693 states and 1636 transitions. [2022-01-18 01:58:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:58:00,735 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 01:58:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:00,739 INFO L225 Difference]: With dead ends: 693 [2022-01-18 01:58:00,739 INFO L226 Difference]: Without dead ends: 564 [2022-01-18 01:58:00,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=268, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:58:00,744 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 208 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:00,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 524 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:58:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-18 01:58:00,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 486. [2022-01-18 01:58:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 2.4474226804123713) internal successors, (1187), 485 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1187 transitions. [2022-01-18 01:58:00,763 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1187 transitions. Word has length 62 [2022-01-18 01:58:00,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:00,764 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1187 transitions. [2022-01-18 01:58:00,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1187 transitions. [2022-01-18 01:58:00,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 01:58:00,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:00,766 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] [2022-01-18 01:58:00,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 01:58:00,766 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1810260605, now seen corresponding path program 2 times [2022-01-18 01:58:00,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:00,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129000497] [2022-01-18 01:58:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:00,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:01,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129000497] [2022-01-18 01:58:01,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129000497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:58:01,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:58:01,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 01:58:01,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14112139] [2022-01-18 01:58:01,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:58:01,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 01:58:01,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 01:58:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:58:01,120 INFO L87 Difference]: Start difference. First operand 486 states and 1187 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:01,411 INFO L93 Difference]: Finished difference Result 724 states and 1704 transitions. [2022-01-18 01:58:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:58:01,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 01:58:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:01,415 INFO L225 Difference]: With dead ends: 724 [2022-01-18 01:58:01,416 INFO L226 Difference]: Without dead ends: 673 [2022-01-18 01:58:01,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:58:01,420 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 250 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:01,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 568 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:58:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-01-18 01:58:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 502. [2022-01-18 01:58:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.465069860279441) internal successors, (1235), 501 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1235 transitions. [2022-01-18 01:58:01,437 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1235 transitions. Word has length 62 [2022-01-18 01:58:01,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:01,438 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1235 transitions. [2022-01-18 01:58:01,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1235 transitions. [2022-01-18 01:58:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 01:58:01,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:01,440 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] [2022-01-18 01:58:01,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 01:58:01,440 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1129232613, now seen corresponding path program 3 times [2022-01-18 01:58:01,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:01,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794013014] [2022-01-18 01:58:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:01,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:01,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:01,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794013014] [2022-01-18 01:58:01,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794013014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:58:01,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:58:01,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 01:58:01,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537582636] [2022-01-18 01:58:01,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:58:01,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 01:58:01,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 01:58:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:58:01,821 INFO L87 Difference]: Start difference. First operand 502 states and 1235 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:02,092 INFO L93 Difference]: Finished difference Result 670 states and 1593 transitions. [2022-01-18 01:58:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:58:02,092 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 01:58:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:02,095 INFO L225 Difference]: With dead ends: 670 [2022-01-18 01:58:02,095 INFO L226 Difference]: Without dead ends: 604 [2022-01-18 01:58:02,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:58:02,095 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 284 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:02,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 431 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:58:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-18 01:58:02,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 502. [2022-01-18 01:58:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.4570858283433132) internal successors, (1231), 501 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1231 transitions. [2022-01-18 01:58:02,108 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1231 transitions. Word has length 62 [2022-01-18 01:58:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:02,109 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1231 transitions. [2022-01-18 01:58:02,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1231 transitions. [2022-01-18 01:58:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 01:58:02,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:02,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:02,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 01:58:02,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash -79113043, now seen corresponding path program 4 times [2022-01-18 01:58:02,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:02,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607627708] [2022-01-18 01:58:02,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:02,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:02,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:02,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607627708] [2022-01-18 01:58:02,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607627708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:58:02,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:58:02,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 01:58:02,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445393892] [2022-01-18 01:58:02,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:58:02,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 01:58:02,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 01:58:02,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:58:02,452 INFO L87 Difference]: Start difference. First operand 502 states and 1231 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:02,813 INFO L93 Difference]: Finished difference Result 655 states and 1566 transitions. [2022-01-18 01:58:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:58:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 01:58:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:02,816 INFO L225 Difference]: With dead ends: 655 [2022-01-18 01:58:02,817 INFO L226 Difference]: Without dead ends: 604 [2022-01-18 01:58:02,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:58:02,818 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 220 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:02,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 536 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:58:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-18 01:58:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 502. [2022-01-18 01:58:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.4570858283433132) internal successors, (1231), 501 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1231 transitions. [2022-01-18 01:58:02,831 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1231 transitions. Word has length 62 [2022-01-18 01:58:02,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:02,831 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1231 transitions. [2022-01-18 01:58:02,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1231 transitions. [2022-01-18 01:58:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 01:58:02,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:02,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:02,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 01:58:02,834 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:02,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1623942775, now seen corresponding path program 5 times [2022-01-18 01:58:02,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:02,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984335501] [2022-01-18 01:58:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:02,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:03,107 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 01:58:03,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984335501] [2022-01-18 01:58:03,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984335501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:58:03,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:58:03,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 01:58:03,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22081024] [2022-01-18 01:58:03,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:58:03,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 01:58:03,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 01:58:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:58:03,109 INFO L87 Difference]: Start difference. First operand 502 states and 1231 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:03,311 INFO L93 Difference]: Finished difference Result 679 states and 1612 transitions. [2022-01-18 01:58:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:58:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 01:58:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:03,314 INFO L225 Difference]: With dead ends: 679 [2022-01-18 01:58:03,314 INFO L226 Difference]: Without dead ends: 628 [2022-01-18 01:58:03,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=268, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:58:03,314 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 191 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:03,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 530 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:58:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-01-18 01:58:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 502. [2022-01-18 01:58:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 2.4570858283433132) internal successors, (1231), 501 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1231 transitions. [2022-01-18 01:58:03,324 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1231 transitions. Word has length 62 [2022-01-18 01:58:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:03,325 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1231 transitions. [2022-01-18 01:58:03,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:03,325 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1231 transitions. [2022-01-18 01:58:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 01:58:03,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:03,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:03,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 01:58:03,326 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:03,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1989996529, now seen corresponding path program 6 times [2022-01-18 01:58:03,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:03,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912305250] [2022-01-18 01:58:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:03,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:03,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:03,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912305250] [2022-01-18 01:58:03,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912305250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:58:03,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:58:03,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-18 01:58:03,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758452780] [2022-01-18 01:58:03,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:58:03,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 01:58:03,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:03,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 01:58:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 01:58:03,601 INFO L87 Difference]: Start difference. First operand 502 states and 1231 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:03,802 INFO L93 Difference]: Finished difference Result 601 states and 1443 transitions. [2022-01-18 01:58:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:58:03,802 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 01:58:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:03,804 INFO L225 Difference]: With dead ends: 601 [2022-01-18 01:58:03,804 INFO L226 Difference]: Without dead ends: 535 [2022-01-18 01:58:03,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:58:03,806 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 153 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:03,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 506 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:58:03,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-01-18 01:58:03,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 483. [2022-01-18 01:58:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 2.4419087136929463) internal successors, (1177), 482 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 1177 transitions. [2022-01-18 01:58:03,815 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 1177 transitions. Word has length 62 [2022-01-18 01:58:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:03,815 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 1177 transitions. [2022-01-18 01:58:03,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 1177 transitions. [2022-01-18 01:58:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:03,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:03,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:03,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 01:58:03,817 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1860622977, now seen corresponding path program 1 times [2022-01-18 01:58:03,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:03,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007684961] [2022-01-18 01:58:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:03,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:04,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007684961] [2022-01-18 01:58:04,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007684961] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186112507] [2022-01-18 01:58:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:04,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:04,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:04,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:04,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 01:58:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:04,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:04,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:04,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:05,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186112507] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:05,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:05,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:05,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415882640] [2022-01-18 01:58:05,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:05,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:05,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:05,220 INFO L87 Difference]: Start difference. First operand 483 states and 1177 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:06,145 INFO L93 Difference]: Finished difference Result 1313 states and 3214 transitions. [2022-01-18 01:58:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 01:58:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:06,151 INFO L225 Difference]: With dead ends: 1313 [2022-01-18 01:58:06,151 INFO L226 Difference]: Without dead ends: 1232 [2022-01-18 01:58:06,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=638, Invalid=3394, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 01:58:06,153 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 852 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:06,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 1955 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:58:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-01-18 01:58:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 719. [2022-01-18 01:58:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 2.518105849582173) internal successors, (1808), 718 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1808 transitions. [2022-01-18 01:58:06,170 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1808 transitions. Word has length 67 [2022-01-18 01:58:06,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:06,170 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1808 transitions. [2022-01-18 01:58:06,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1808 transitions. [2022-01-18 01:58:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:06,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:06,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:06,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:06,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:06,388 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:06,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1963152621, now seen corresponding path program 2 times [2022-01-18 01:58:06,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:06,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830041961] [2022-01-18 01:58:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:06,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:06,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:06,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830041961] [2022-01-18 01:58:06,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830041961] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:06,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514580376] [2022-01-18 01:58:06,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:58:06,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:06,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:06,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:06,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 01:58:06,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:58:06,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:06,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:06,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:07,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:07,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514580376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:07,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:07,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:07,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261449724] [2022-01-18 01:58:07,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:07,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:07,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:07,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:07,769 INFO L87 Difference]: Start difference. First operand 719 states and 1808 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:10,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:10,171 INFO L93 Difference]: Finished difference Result 2400 states and 6041 transitions. [2022-01-18 01:58:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 01:58:10,171 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:10,183 INFO L225 Difference]: With dead ends: 2400 [2022-01-18 01:58:10,183 INFO L226 Difference]: Without dead ends: 2319 [2022-01-18 01:58:10,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1392, Invalid=8910, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 01:58:10,187 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1030 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:10,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 2858 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 01:58:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2022-01-18 01:58:10,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 739. [2022-01-18 01:58:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 2.535230352303523) internal successors, (1871), 738 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1871 transitions. [2022-01-18 01:58:10,208 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1871 transitions. Word has length 67 [2022-01-18 01:58:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:10,208 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 1871 transitions. [2022-01-18 01:58:10,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:10,209 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1871 transitions. [2022-01-18 01:58:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:10,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:10,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:10,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:10,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-18 01:58:10,434 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:10,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:10,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1661878945, now seen corresponding path program 3 times [2022-01-18 01:58:10,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:10,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343314530] [2022-01-18 01:58:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:10,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:10,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:10,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343314530] [2022-01-18 01:58:10,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343314530] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:10,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051371523] [2022-01-18 01:58:10,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:58:10,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:10,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:10,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:10,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 01:58:10,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:58:10,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:10,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:10,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:11,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:11,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051371523] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:11,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:11,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:11,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849660843] [2022-01-18 01:58:11,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:11,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:11,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:11,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:11,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:11,845 INFO L87 Difference]: Start difference. First operand 739 states and 1871 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:15,229 INFO L93 Difference]: Finished difference Result 2191 states and 5430 transitions. [2022-01-18 01:58:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 01:58:15,230 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:15,250 INFO L225 Difference]: With dead ends: 2191 [2022-01-18 01:58:15,250 INFO L226 Difference]: Without dead ends: 2059 [2022-01-18 01:58:15,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1872, Invalid=10784, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 01:58:15,254 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1357 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:15,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 2630 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 01:58:15,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-01-18 01:58:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 809. [2022-01-18 01:58:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.6113861386138613) internal successors, (2110), 808 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2110 transitions. [2022-01-18 01:58:15,305 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2110 transitions. Word has length 67 [2022-01-18 01:58:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:15,305 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2110 transitions. [2022-01-18 01:58:15,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2110 transitions. [2022-01-18 01:58:15,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:15,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:15,307 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] [2022-01-18 01:58:15,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:15,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:15,544 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:15,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1199640043, now seen corresponding path program 4 times [2022-01-18 01:58:15,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:15,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252528671] [2022-01-18 01:58:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:15,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:15,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:15,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252528671] [2022-01-18 01:58:15,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252528671] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:15,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14242131] [2022-01-18 01:58:15,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:58:15,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:15,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:15,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:15,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 01:58:15,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:58:15,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:15,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:15,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:16,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:16,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14242131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:16,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:16,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:16,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989566823] [2022-01-18 01:58:16,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:16,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:16,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:16,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:16,943 INFO L87 Difference]: Start difference. First operand 809 states and 2110 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:18,767 INFO L93 Difference]: Finished difference Result 1833 states and 4534 transitions. [2022-01-18 01:58:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 01:58:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:18,773 INFO L225 Difference]: With dead ends: 1833 [2022-01-18 01:58:18,773 INFO L226 Difference]: Without dead ends: 1731 [2022-01-18 01:58:18,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1082, Invalid=5560, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 01:58:18,774 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 989 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:18,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 2912 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:58:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-01-18 01:58:18,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 824. [2022-01-18 01:58:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 2.5880923450789792) internal successors, (2130), 823 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 2130 transitions. [2022-01-18 01:58:18,796 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 2130 transitions. Word has length 67 [2022-01-18 01:58:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:18,798 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 2130 transitions. [2022-01-18 01:58:18,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 2130 transitions. [2022-01-18 01:58:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:18,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:18,799 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] [2022-01-18 01:58:18,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:19,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:19,016 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash -596174201, now seen corresponding path program 5 times [2022-01-18 01:58:19,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:19,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322169659] [2022-01-18 01:58:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:19,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:19,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:19,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322169659] [2022-01-18 01:58:19,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322169659] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:19,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526552176] [2022-01-18 01:58:19,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:58:19,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:19,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:19,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:19,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 01:58:19,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:58:19,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:19,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:19,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:19,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:20,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526552176] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:20,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:20,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-01-18 01:58:20,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421953458] [2022-01-18 01:58:20,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:20,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 01:58:20,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:20,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 01:58:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 01:58:20,154 INFO L87 Difference]: Start difference. First operand 824 states and 2130 transitions. Second operand has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:21,896 INFO L93 Difference]: Finished difference Result 1950 states and 4935 transitions. [2022-01-18 01:58:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 01:58:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:21,904 INFO L225 Difference]: With dead ends: 1950 [2022-01-18 01:58:21,905 INFO L226 Difference]: Without dead ends: 1869 [2022-01-18 01:58:21,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1604 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=796, Invalid=4904, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 01:58:21,907 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 657 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:21,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 2805 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:58:21,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-01-18 01:58:21,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 846. [2022-01-18 01:58:21,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 845 states have (on average 2.596449704142012) internal successors, (2194), 845 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 2194 transitions. [2022-01-18 01:58:21,933 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 2194 transitions. Word has length 67 [2022-01-18 01:58:21,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:21,933 INFO L470 AbstractCegarLoop]: Abstraction has 846 states and 2194 transitions. [2022-01-18 01:58:21,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 2194 transitions. [2022-01-18 01:58:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:21,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:21,936 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] [2022-01-18 01:58:21,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 01:58:22,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 01:58:22,152 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash -897447877, now seen corresponding path program 6 times [2022-01-18 01:58:22,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:22,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713775222] [2022-01-18 01:58:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:22,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:22,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:22,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713775222] [2022-01-18 01:58:22,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713775222] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:22,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132663652] [2022-01-18 01:58:22,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:58:22,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:22,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:22,382 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:22,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 01:58:22,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 01:58:22,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:22,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:22,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:22,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:23,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132663652] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:23,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:23,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:23,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207881976] [2022-01-18 01:58:23,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:23,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:23,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:23,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:23,362 INFO L87 Difference]: Start difference. First operand 846 states and 2194 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:28,014 INFO L93 Difference]: Finished difference Result 3476 states and 8862 transitions. [2022-01-18 01:58:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-18 01:58:28,015 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:28,025 INFO L225 Difference]: With dead ends: 3476 [2022-01-18 01:58:28,026 INFO L226 Difference]: Without dead ends: 3344 [2022-01-18 01:58:28,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8205 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3053, Invalid=19297, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 01:58:28,032 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1729 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:28,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 3572 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 01:58:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2022-01-18 01:58:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 898. [2022-01-18 01:58:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 897 states have (on average 2.613154960981048) internal successors, (2344), 897 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 2344 transitions. [2022-01-18 01:58:28,068 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 2344 transitions. Word has length 67 [2022-01-18 01:58:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:28,068 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 2344 transitions. [2022-01-18 01:58:28,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 2344 transitions. [2022-01-18 01:58:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:28,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:28,070 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] [2022-01-18 01:58:28,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:28,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:28,290 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash 536000431, now seen corresponding path program 7 times [2022-01-18 01:58:28,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:28,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959077587] [2022-01-18 01:58:28,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:28,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:28,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:28,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959077587] [2022-01-18 01:58:28,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959077587] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:28,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793436393] [2022-01-18 01:58:28,506 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:58:28,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:28,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:28,507 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:28,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 01:58:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:28,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:28,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:29,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:29,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793436393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:29,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:29,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:29,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806332691] [2022-01-18 01:58:29,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:29,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:29,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:29,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:29,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:29,639 INFO L87 Difference]: Start difference. First operand 898 states and 2344 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:33,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:33,447 INFO L93 Difference]: Finished difference Result 3086 states and 7832 transitions. [2022-01-18 01:58:33,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 01:58:33,447 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:33,456 INFO L225 Difference]: With dead ends: 3086 [2022-01-18 01:58:33,456 INFO L226 Difference]: Without dead ends: 2984 [2022-01-18 01:58:33,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4923 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2383, Invalid=12137, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 01:58:33,457 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1910 mSDsluCounter, 4024 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:33,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 3975 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 01:58:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2022-01-18 01:58:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 886. [2022-01-18 01:58:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 2.5762711864406778) internal successors, (2280), 885 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2280 transitions. [2022-01-18 01:58:33,490 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2280 transitions. Word has length 67 [2022-01-18 01:58:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:33,490 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 2280 transitions. [2022-01-18 01:58:33,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2280 transitions. [2022-01-18 01:58:33,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:33,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:33,492 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] [2022-01-18 01:58:33,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:33,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:33,707 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1726094591, now seen corresponding path program 8 times [2022-01-18 01:58:33,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:33,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508081766] [2022-01-18 01:58:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:33,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:33,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:33,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508081766] [2022-01-18 01:58:33,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508081766] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:33,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894663590] [2022-01-18 01:58:33,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:58:33,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:33,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:33,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:33,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 01:58:33,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:58:33,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:33,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:33,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:34,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:34,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894663590] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:34,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:34,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:34,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111369138] [2022-01-18 01:58:34,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:34,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:34,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:34,864 INFO L87 Difference]: Start difference. First operand 886 states and 2280 transitions. Second operand has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:37,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:37,658 INFO L93 Difference]: Finished difference Result 2992 states and 7388 transitions. [2022-01-18 01:58:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 01:58:37,659 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:37,668 INFO L225 Difference]: With dead ends: 2992 [2022-01-18 01:58:37,668 INFO L226 Difference]: Without dead ends: 2881 [2022-01-18 01:58:37,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3666 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1698, Invalid=9432, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 01:58:37,673 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1342 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:37,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 3214 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:58:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-18 01:58:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 926. [2022-01-18 01:58:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 2.595675675675676) internal successors, (2401), 925 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 2401 transitions. [2022-01-18 01:58:37,696 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 2401 transitions. Word has length 67 [2022-01-18 01:58:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:37,696 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 2401 transitions. [2022-01-18 01:58:37,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 36 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 2401 transitions. [2022-01-18 01:58:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:37,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:37,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:37,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-18 01:58:37,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 01:58:37,911 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:37,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1135424397, now seen corresponding path program 9 times [2022-01-18 01:58:37,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:37,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778264621] [2022-01-18 01:58:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:37,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:38,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:38,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778264621] [2022-01-18 01:58:38,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778264621] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65870537] [2022-01-18 01:58:38,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:58:38,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:38,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:38,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:38,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 01:58:38,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:58:38,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:38,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:38,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:38,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:38,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65870537] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:38,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:38,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:38,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374895973] [2022-01-18 01:58:38,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:38,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:38,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:38,893 INFO L87 Difference]: Start difference. First operand 926 states and 2401 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:41,711 INFO L93 Difference]: Finished difference Result 2645 states and 6466 transitions. [2022-01-18 01:58:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 01:58:41,711 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:41,731 INFO L225 Difference]: With dead ends: 2645 [2022-01-18 01:58:41,731 INFO L226 Difference]: Without dead ends: 2594 [2022-01-18 01:58:41,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1763, Invalid=9579, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 01:58:41,733 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1538 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:41,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 3105 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:58:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2022-01-18 01:58:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 918. [2022-01-18 01:58:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 2.5812431842966195) internal successors, (2367), 917 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2367 transitions. [2022-01-18 01:58:41,790 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2367 transitions. Word has length 67 [2022-01-18 01:58:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:41,790 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 2367 transitions. [2022-01-18 01:58:41,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2367 transitions. [2022-01-18 01:58:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:41,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:41,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:41,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:41,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 01:58:41,993 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1350924167, now seen corresponding path program 10 times [2022-01-18 01:58:41,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:41,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751743727] [2022-01-18 01:58:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:41,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:42,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:42,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751743727] [2022-01-18 01:58:42,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751743727] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:42,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197780215] [2022-01-18 01:58:42,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:58:42,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:42,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:42,186 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:42,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 01:58:42,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:58:42,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:42,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:42,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:42,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:42,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197780215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:42,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:42,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:42,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738381228] [2022-01-18 01:58:42,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:42,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:42,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:42,997 INFO L87 Difference]: Start difference. First operand 918 states and 2367 transitions. Second operand has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:43,983 INFO L93 Difference]: Finished difference Result 1766 states and 4303 transitions. [2022-01-18 01:58:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 01:58:43,984 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:43,988 INFO L225 Difference]: With dead ends: 1766 [2022-01-18 01:58:43,988 INFO L226 Difference]: Without dead ends: 1715 [2022-01-18 01:58:43,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=771, Invalid=3921, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 01:58:43,989 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 921 mSDsluCounter, 3149 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:43,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 3091 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:58:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-01-18 01:58:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 918. [2022-01-18 01:58:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 2.5812431842966195) internal successors, (2367), 917 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2367 transitions. [2022-01-18 01:58:44,019 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2367 transitions. Word has length 67 [2022-01-18 01:58:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:44,019 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 2367 transitions. [2022-01-18 01:58:44,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 36 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2367 transitions. [2022-01-18 01:58:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:44,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:44,031 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] [2022-01-18 01:58:44,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:44,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 01:58:44,247 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:44,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1703935707, now seen corresponding path program 11 times [2022-01-18 01:58:44,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:44,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674862087] [2022-01-18 01:58:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:44,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:44,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:44,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674862087] [2022-01-18 01:58:44,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674862087] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:44,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29678644] [2022-01-18 01:58:44,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:58:44,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:44,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:44,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 01:58:44,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:58:44,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:44,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:44,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:44,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:45,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29678644] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:45,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:45,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2022-01-18 01:58:45,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327676976] [2022-01-18 01:58:45,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:45,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:58:45,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:58:45,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:58:45,325 INFO L87 Difference]: Start difference. First operand 918 states and 2367 transitions. Second operand has 36 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:45,761 INFO L93 Difference]: Finished difference Result 1428 states and 3582 transitions. [2022-01-18 01:58:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:58:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:45,778 INFO L225 Difference]: With dead ends: 1428 [2022-01-18 01:58:45,778 INFO L226 Difference]: Without dead ends: 1377 [2022-01-18 01:58:45,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=489, Invalid=2163, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 01:58:45,779 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 354 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:45,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1222 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:58:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2022-01-18 01:58:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 934. [2022-01-18 01:58:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 2.5841371918542335) internal successors, (2411), 933 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 2411 transitions. [2022-01-18 01:58:45,813 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 2411 transitions. Word has length 67 [2022-01-18 01:58:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:45,813 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 2411 transitions. [2022-01-18 01:58:45,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.5833333333333335) internal successors, (129), 36 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 2411 transitions. [2022-01-18 01:58:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:45,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:45,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:45,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:46,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 01:58:46,032 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:46,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:46,033 INFO L85 PathProgramCache]: Analyzing trace with hash 938600315, now seen corresponding path program 12 times [2022-01-18 01:58:46,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:46,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862426658] [2022-01-18 01:58:46,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:46,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:46,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:46,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862426658] [2022-01-18 01:58:46,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862426658] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:46,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227260459] [2022-01-18 01:58:46,256 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:58:46,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:46,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:46,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:46,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 01:58:46,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 01:58:46,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:46,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:46,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:46,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:47,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227260459] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:47,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:47,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:58:47,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076058436] [2022-01-18 01:58:47,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:47,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:58:47,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:47,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:58:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:58:47,361 INFO L87 Difference]: Start difference. First operand 934 states and 2411 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:47,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:47,986 INFO L93 Difference]: Finished difference Result 1414 states and 3548 transitions. [2022-01-18 01:58:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 01:58:47,986 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:47,996 INFO L225 Difference]: With dead ends: 1414 [2022-01-18 01:58:47,996 INFO L226 Difference]: Without dead ends: 1363 [2022-01-18 01:58:47,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=551, Invalid=2311, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 01:58:47,997 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 366 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:47,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 1593 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:58:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-01-18 01:58:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 946. [2022-01-18 01:58:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 2.582010582010582) internal successors, (2440), 945 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 2440 transitions. [2022-01-18 01:58:48,013 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 2440 transitions. Word has length 67 [2022-01-18 01:58:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:48,013 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 2440 transitions. [2022-01-18 01:58:48,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 2440 transitions. [2022-01-18 01:58:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:48,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:48,015 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] [2022-01-18 01:58:48,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:48,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:48,236 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:48,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash -345043983, now seen corresponding path program 13 times [2022-01-18 01:58:48,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:48,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028413308] [2022-01-18 01:58:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:48,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:48,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:48,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028413308] [2022-01-18 01:58:48,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028413308] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:48,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683432964] [2022-01-18 01:58:48,448 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:58:48,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:48,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:48,449 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:48,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 01:58:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:48,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:48,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:48,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:49,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683432964] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:49,602 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:49,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:58:49,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393300103] [2022-01-18 01:58:49,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:49,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:58:49,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:58:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1098, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:58:49,604 INFO L87 Difference]: Start difference. First operand 946 states and 2440 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:50,559 INFO L93 Difference]: Finished difference Result 1636 states and 4074 transitions. [2022-01-18 01:58:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 01:58:50,564 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:50,568 INFO L225 Difference]: With dead ends: 1636 [2022-01-18 01:58:50,568 INFO L226 Difference]: Without dead ends: 1585 [2022-01-18 01:58:50,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=676, Invalid=2746, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 01:58:50,574 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 445 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:50,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 1808 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:58:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-01-18 01:58:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 942. [2022-01-18 01:58:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 01:58:50,612 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 01:58:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:50,612 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 01:58:50,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 01:58:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:50,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:50,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:50,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:50,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-01-18 01:58:50,838 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:50,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash -802204853, now seen corresponding path program 14 times [2022-01-18 01:58:50,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:50,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254347060] [2022-01-18 01:58:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:50,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:51,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254347060] [2022-01-18 01:58:51,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254347060] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242310060] [2022-01-18 01:58:51,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:58:51,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:51,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:51,013 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:51,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 01:58:51,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:58:51,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:51,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:51,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:51,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:52,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242310060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:52,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:52,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:58:52,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219952936] [2022-01-18 01:58:52,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:52,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:58:52,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:58:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1105, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:58:52,105 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:52,887 INFO L93 Difference]: Finished difference Result 1412 states and 3554 transitions. [2022-01-18 01:58:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:58:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:52,906 INFO L225 Difference]: With dead ends: 1412 [2022-01-18 01:58:52,906 INFO L226 Difference]: Without dead ends: 1361 [2022-01-18 01:58:52,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=497, Invalid=2259, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 01:58:52,908 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 332 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:52,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 1797 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:58:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-01-18 01:58:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 942. [2022-01-18 01:58:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 01:58:52,925 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 01:58:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:52,925 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 01:58:52,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 01:58:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:52,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:52,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:52,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:53,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:53,143 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:53,144 INFO L85 PathProgramCache]: Analyzing trace with hash -731367441, now seen corresponding path program 15 times [2022-01-18 01:58:53,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:53,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435102853] [2022-01-18 01:58:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:53,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:53,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:53,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435102853] [2022-01-18 01:58:53,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435102853] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:53,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372723613] [2022-01-18 01:58:53,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:58:53,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:53,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:53,295 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:53,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 01:58:53,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:58:53,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:53,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:53,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:53,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:54,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372723613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:54,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:54,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:58:54,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872828474] [2022-01-18 01:58:54,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:54,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:58:54,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:58:54,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:58:54,068 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:54,752 INFO L93 Difference]: Finished difference Result 1468 states and 3692 transitions. [2022-01-18 01:58:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 01:58:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:54,755 INFO L225 Difference]: With dead ends: 1468 [2022-01-18 01:58:54,755 INFO L226 Difference]: Without dead ends: 1417 [2022-01-18 01:58:54,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=593, Invalid=2713, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 01:58:54,756 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 398 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:54,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 1784 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:58:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2022-01-18 01:58:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 942. [2022-01-18 01:58:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 01:58:54,774 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 01:58:54,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:54,774 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 01:58:54,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 01:58:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:54,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:54,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:54,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 01:58:54,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:54,992 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2015011739, now seen corresponding path program 16 times [2022-01-18 01:58:54,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:54,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154438132] [2022-01-18 01:58:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:54,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:55,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:55,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154438132] [2022-01-18 01:58:55,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154438132] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:55,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646919576] [2022-01-18 01:58:55,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:58:55,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:55,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:55,175 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:55,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 01:58:55,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:58:55,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:55,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:55,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:55,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:55,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646919576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:55,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:55,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:58:55,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118223565] [2022-01-18 01:58:55,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:55,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:58:55,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:55,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:58:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1106, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:58:55,944 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:56,720 INFO L93 Difference]: Finished difference Result 1596 states and 3999 transitions. [2022-01-18 01:58:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 01:58:56,720 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:56,722 INFO L225 Difference]: With dead ends: 1596 [2022-01-18 01:58:56,722 INFO L226 Difference]: Without dead ends: 1545 [2022-01-18 01:58:56,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=672, Invalid=2868, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 01:58:56,723 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 322 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:56,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 2425 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:58:56,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-01-18 01:58:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 942. [2022-01-18 01:58:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 01:58:56,764 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 01:58:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:56,764 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 01:58:56,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 01:58:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:56,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:56,766 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] [2022-01-18 01:58:56,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:56,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 01:58:56,966 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:56,967 INFO L85 PathProgramCache]: Analyzing trace with hash 636220915, now seen corresponding path program 17 times [2022-01-18 01:58:56,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:56,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087570130] [2022-01-18 01:58:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:56,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:57,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:57,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087570130] [2022-01-18 01:58:57,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087570130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:57,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223578200] [2022-01-18 01:58:57,111 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:58:57,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:57,111 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:57,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 01:58:57,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:58:57,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:57,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:57,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:58:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:57,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:58:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:57,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223578200] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:58:57,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:58:57,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:58:57,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891035073] [2022-01-18 01:58:57,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:58:57,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:58:57,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:58:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:58:57,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1133, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:58:57,886 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:58:59,290 INFO L93 Difference]: Finished difference Result 2221 states and 5537 transitions. [2022-01-18 01:58:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 01:58:59,290 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:58:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:58:59,293 INFO L225 Difference]: With dead ends: 2221 [2022-01-18 01:58:59,293 INFO L226 Difference]: Without dead ends: 2170 [2022-01-18 01:58:59,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1014, Invalid=5148, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 01:58:59,295 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 563 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:59,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 3132 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:58:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2022-01-18 01:58:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 942. [2022-01-18 01:58:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 01:58:59,315 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 01:58:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:58:59,315 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 01:58:59,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:58:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 01:58:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:58:59,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:58:59,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:58:59,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:59,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:59,531 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:58:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:58:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash 165029217, now seen corresponding path program 18 times [2022-01-18 01:58:59,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:58:59,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661286904] [2022-01-18 01:58:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:58:59,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:58:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:58:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:58:59,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:58:59,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661286904] [2022-01-18 01:58:59,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661286904] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:58:59,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720624935] [2022-01-18 01:58:59,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:58:59,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:58:59,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:58:59,736 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:58:59,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 01:58:59,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 01:58:59,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:58:59,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:58:59,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:00,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:00,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720624935] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:00,827 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:00,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:59:00,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162579435] [2022-01-18 01:59:00,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:00,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:59:00,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:59:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:59:00,828 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:04,080 INFO L93 Difference]: Finished difference Result 2430 states and 6089 transitions. [2022-01-18 01:59:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 01:59:04,080 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:59:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:04,083 INFO L225 Difference]: With dead ends: 2430 [2022-01-18 01:59:04,083 INFO L226 Difference]: Without dead ends: 2379 [2022-01-18 01:59:04,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2981 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1551, Invalid=8349, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 01:59:04,084 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 874 mSDsluCounter, 2542 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:04,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 2581 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2022-01-18 01:59:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 942. [2022-01-18 01:59:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 01:59:04,105 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 01:59:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:04,106 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 01:59:04,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 01:59:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:59:04,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:04,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:04,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-18 01:59:04,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:04,331 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash -136244459, now seen corresponding path program 19 times [2022-01-18 01:59:04,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:04,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635044544] [2022-01-18 01:59:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:04,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:04,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:04,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635044544] [2022-01-18 01:59:04,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635044544] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:04,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978577525] [2022-01-18 01:59:04,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:59:04,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:04,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:04,535 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:04,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 01:59:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:04,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:59:04,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:05,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:05,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978577525] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:05,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:05,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:59:05,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357291725] [2022-01-18 01:59:05,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:05,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:59:05,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:59:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:59:05,682 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:09,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:09,473 INFO L93 Difference]: Finished difference Result 2784 states and 6986 transitions. [2022-01-18 01:59:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 01:59:09,473 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:59:09,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:09,476 INFO L225 Difference]: With dead ends: 2784 [2022-01-18 01:59:09,476 INFO L226 Difference]: Without dead ends: 2733 [2022-01-18 01:59:09,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5121 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2382, Invalid=12870, Unknown=0, NotChecked=0, Total=15252 [2022-01-18 01:59:09,477 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1087 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:09,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2884 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 01:59:09,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-01-18 01:59:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 942. [2022-01-18 01:59:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 941 states have (on average 2.5770456960680126) internal successors, (2425), 941 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 2425 transitions. [2022-01-18 01:59:09,495 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 2425 transitions. Word has length 67 [2022-01-18 01:59:09,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:09,496 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 2425 transitions. [2022-01-18 01:59:09,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 2425 transitions. [2022-01-18 01:59:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-18 01:59:09,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:09,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:09,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:09,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:09,711 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:09,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1297203849, now seen corresponding path program 20 times [2022-01-18 01:59:09,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:09,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097960361] [2022-01-18 01:59:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:09,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:09,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:09,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097960361] [2022-01-18 01:59:09,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097960361] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:09,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87573036] [2022-01-18 01:59:09,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:59:09,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:09,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:09,908 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:09,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 01:59:09,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:59:09,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:09,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 01:59:09,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:10,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:10,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87573036] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:10,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:10,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-18 01:59:10,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133283801] [2022-01-18 01:59:10,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:10,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 01:59:10,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:10,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 01:59:10,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:59:10,805 INFO L87 Difference]: Start difference. First operand 942 states and 2425 transitions. Second operand has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:13,044 INFO L93 Difference]: Finished difference Result 3254 states and 8236 transitions. [2022-01-18 01:59:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 01:59:13,044 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-18 01:59:13,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:13,048 INFO L225 Difference]: With dead ends: 3254 [2022-01-18 01:59:13,049 INFO L226 Difference]: Without dead ends: 3152 [2022-01-18 01:59:13,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3069 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1706, Invalid=7996, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 01:59:13,049 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 982 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:13,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 2943 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-01-18 01:59:13,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 947. [2022-01-18 01:59:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 946 states have (on average 2.5940803382663846) internal successors, (2454), 946 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 2454 transitions. [2022-01-18 01:59:13,068 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 2454 transitions. Word has length 67 [2022-01-18 01:59:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:13,068 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 2454 transitions. [2022-01-18 01:59:13,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 2454 transitions. [2022-01-18 01:59:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:13,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:13,070 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:13,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:13,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 01:59:13,285 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash -732732975, now seen corresponding path program 21 times [2022-01-18 01:59:13,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:13,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638096318] [2022-01-18 01:59:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:13,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:13,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638096318] [2022-01-18 01:59:13,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638096318] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673326262] [2022-01-18 01:59:13,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:59:13,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:13,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:13,491 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:13,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 01:59:13,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 01:59:13,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:13,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 01:59:13,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:13,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:14,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673326262] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:14,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:14,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 01:59:14,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598961059] [2022-01-18 01:59:14,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:14,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 01:59:14,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 01:59:14,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 01:59:14,497 INFO L87 Difference]: Start difference. First operand 947 states and 2454 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:16,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:16,115 INFO L93 Difference]: Finished difference Result 1871 states and 4699 transitions. [2022-01-18 01:59:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 01:59:16,116 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:16,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:16,118 INFO L225 Difference]: With dead ends: 1871 [2022-01-18 01:59:16,118 INFO L226 Difference]: Without dead ends: 1769 [2022-01-18 01:59:16,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=772, Invalid=6200, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 01:59:16,119 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1018 mSDsluCounter, 4095 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:16,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 4068 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-01-18 01:59:16,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1047. [2022-01-18 01:59:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.5822179732313577) internal successors, (2701), 1046 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 01:59:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2701 transitions. [2022-01-18 01:59:16,132 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2701 transitions. Word has length 72 [2022-01-18 01:59:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:16,133 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2701 transitions. [2022-01-18 01:59:16,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2701 transitions. [2022-01-18 01:59:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:16,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:16,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:16,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:16,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 01:59:16,347 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1292597427, now seen corresponding path program 1 times [2022-01-18 01:59:16,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:16,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166458126] [2022-01-18 01:59:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:16,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:16,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:16,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166458126] [2022-01-18 01:59:16,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166458126] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:16,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396064962] [2022-01-18 01:59:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:16,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:16,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:16,543 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:16,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 01:59:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:16,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:16,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:17,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:17,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396064962] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:17,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:17,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:17,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053874472] [2022-01-18 01:59:17,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:17,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:17,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:17,532 INFO L87 Difference]: Start difference. First operand 1047 states and 2701 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:18,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:18,286 INFO L93 Difference]: Finished difference Result 1712 states and 4362 transitions. [2022-01-18 01:59:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:59:18,287 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:18,289 INFO L225 Difference]: With dead ends: 1712 [2022-01-18 01:59:18,289 INFO L226 Difference]: Without dead ends: 1661 [2022-01-18 01:59:18,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=2486, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 01:59:18,289 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 413 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:18,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 2660 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:59:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2022-01-18 01:59:18,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1067. [2022-01-18 01:59:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 2.5891181988742966) internal successors, (2760), 1066 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 2760 transitions. [2022-01-18 01:59:18,302 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 2760 transitions. Word has length 72 [2022-01-18 01:59:18,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:18,303 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 2760 transitions. [2022-01-18 01:59:18,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:18,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 2760 transitions. [2022-01-18 01:59:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:18,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:18,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:18,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:18,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 01:59:18,509 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:18,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1763789125, now seen corresponding path program 2 times [2022-01-18 01:59:18,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:18,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967529523] [2022-01-18 01:59:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:18,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:18,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:18,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967529523] [2022-01-18 01:59:18,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967529523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:18,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230596851] [2022-01-18 01:59:18,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:59:18,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:18,871 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:18,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 01:59:18,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:59:18,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:18,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:18,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:19,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:19,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230596851] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:19,593 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:19,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:19,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55392380] [2022-01-18 01:59:19,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:19,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:19,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:19,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:19,594 INFO L87 Difference]: Start difference. First operand 1067 states and 2760 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:20,748 INFO L93 Difference]: Finished difference Result 1852 states and 4719 transitions. [2022-01-18 01:59:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 01:59:20,749 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:20,751 INFO L225 Difference]: With dead ends: 1852 [2022-01-18 01:59:20,751 INFO L226 Difference]: Without dead ends: 1801 [2022-01-18 01:59:20,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=831, Invalid=4281, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 01:59:20,758 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 531 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:20,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 2772 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:59:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-01-18 01:59:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1083. [2022-01-18 01:59:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 2.5951940850277264) internal successors, (2808), 1082 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 01:59:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2808 transitions. [2022-01-18 01:59:20,774 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2808 transitions. Word has length 72 [2022-01-18 01:59:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:20,774 INFO L470 AbstractCegarLoop]: Abstraction has 1083 states and 2808 transitions. [2022-01-18 01:59:20,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2808 transitions. [2022-01-18 01:59:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:20,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:20,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:20,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:20,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:20,994 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:20,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:20,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2065062801, now seen corresponding path program 3 times [2022-01-18 01:59:20,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:20,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916400455] [2022-01-18 01:59:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:20,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:21,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:21,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916400455] [2022-01-18 01:59:21,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916400455] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:21,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238652366] [2022-01-18 01:59:21,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:59:21,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:21,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:21,275 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:21,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 01:59:21,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 01:59:21,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:21,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:21,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:21,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:22,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238652366] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:22,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:22,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:22,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570979227] [2022-01-18 01:59:22,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:22,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:22,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1204, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:22,019 INFO L87 Difference]: Start difference. First operand 1083 states and 2808 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:23,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:23,603 INFO L93 Difference]: Finished difference Result 2113 states and 5314 transitions. [2022-01-18 01:59:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 01:59:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:23,606 INFO L225 Difference]: With dead ends: 2113 [2022-01-18 01:59:23,606 INFO L226 Difference]: Without dead ends: 2062 [2022-01-18 01:59:23,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1288, Invalid=5684, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 01:59:23,607 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 726 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:23,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 3256 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:59:23,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2022-01-18 01:59:23,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1099. [2022-01-18 01:59:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.612021857923497) internal successors, (2868), 1098 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2868 transitions. [2022-01-18 01:59:23,629 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2868 transitions. Word has length 72 [2022-01-18 01:59:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:23,629 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2868 transitions. [2022-01-18 01:59:23,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2868 transitions. [2022-01-18 01:59:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:23,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:23,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:23,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:23,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:23,851 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:23,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:23,852 INFO L85 PathProgramCache]: Analyzing trace with hash -631614493, now seen corresponding path program 4 times [2022-01-18 01:59:23,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:23,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666119579] [2022-01-18 01:59:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:23,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:24,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:24,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666119579] [2022-01-18 01:59:24,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666119579] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:24,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548714199] [2022-01-18 01:59:24,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:59:24,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:24,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:24,120 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:24,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 01:59:24,176 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:59:24,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:24,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:24,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:24,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:25,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548714199] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:25,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:25,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:25,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473396042] [2022-01-18 01:59:25,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:25,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:25,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:25,183 INFO L87 Difference]: Start difference. First operand 1099 states and 2868 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:26,187 INFO L93 Difference]: Finished difference Result 1971 states and 5017 transitions. [2022-01-18 01:59:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 01:59:26,187 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:26,189 INFO L225 Difference]: With dead ends: 1971 [2022-01-18 01:59:26,189 INFO L226 Difference]: Without dead ends: 1890 [2022-01-18 01:59:26,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=738, Invalid=3422, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 01:59:26,190 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 653 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:26,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 2951 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:59:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2022-01-18 01:59:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1099. [2022-01-18 01:59:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 2.604735883424408) internal successors, (2860), 1098 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2860 transitions. [2022-01-18 01:59:26,204 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2860 transitions. Word has length 72 [2022-01-18 01:59:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:26,205 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 2860 transitions. [2022-01-18 01:59:26,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2860 transitions. [2022-01-18 01:59:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:26,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:26,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:26,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:26,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-01-18 01:59:26,422 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash -961381265, now seen corresponding path program 5 times [2022-01-18 01:59:26,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:26,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261304145] [2022-01-18 01:59:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:26,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:26,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:26,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261304145] [2022-01-18 01:59:26,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261304145] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:26,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690895694] [2022-01-18 01:59:26,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:59:26,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:26,649 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:26,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 01:59:26,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 01:59:26,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:26,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:26,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:27,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:27,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690895694] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:27,406 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:27,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:27,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570223128] [2022-01-18 01:59:27,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:27,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:27,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:27,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:27,407 INFO L87 Difference]: Start difference. First operand 1099 states and 2860 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:28,631 INFO L93 Difference]: Finished difference Result 1979 states and 5036 transitions. [2022-01-18 01:59:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 01:59:28,631 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:28,633 INFO L225 Difference]: With dead ends: 1979 [2022-01-18 01:59:28,633 INFO L226 Difference]: Without dead ends: 1928 [2022-01-18 01:59:28,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=657, Invalid=3003, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 01:59:28,634 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 760 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:28,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2388 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:59:28,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2022-01-18 01:59:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1127. [2022-01-18 01:59:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.6261101243339255) internal successors, (2957), 1126 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2957 transitions. [2022-01-18 01:59:28,669 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2957 transitions. Word has length 72 [2022-01-18 01:59:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:28,669 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2957 transitions. [2022-01-18 01:59:28,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2957 transitions. [2022-01-18 01:59:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:28,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:28,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:28,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:28,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-01-18 01:59:28,885 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash 472067043, now seen corresponding path program 6 times [2022-01-18 01:59:28,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:28,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152968687] [2022-01-18 01:59:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:28,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:29,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:29,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152968687] [2022-01-18 01:59:29,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152968687] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:29,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177384512] [2022-01-18 01:59:29,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:59:29,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:29,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:29,050 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:29,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 01:59:29,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 01:59:29,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:29,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:29,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:29,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:29,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177384512] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:29,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:29,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:29,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531658274] [2022-01-18 01:59:29,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:29,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:29,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:29,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:29,990 INFO L87 Difference]: Start difference. First operand 1127 states and 2957 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:31,642 INFO L93 Difference]: Finished difference Result 2027 states and 5233 transitions. [2022-01-18 01:59:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 01:59:31,643 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:31,645 INFO L225 Difference]: With dead ends: 2027 [2022-01-18 01:59:31,645 INFO L226 Difference]: Without dead ends: 1901 [2022-01-18 01:59:31,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=832, Invalid=4138, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 01:59:31,646 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 584 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:31,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 3284 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2022-01-18 01:59:31,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1111. [2022-01-18 01:59:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.606306306306306) internal successors, (2893), 1110 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:31,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2893 transitions. [2022-01-18 01:59:31,661 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2893 transitions. Word has length 72 [2022-01-18 01:59:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:31,661 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2893 transitions. [2022-01-18 01:59:31,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:31,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2893 transitions. [2022-01-18 01:59:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:31,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:31,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:31,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:31,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:31,879 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:31,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1677388773, now seen corresponding path program 7 times [2022-01-18 01:59:31,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:31,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294730031] [2022-01-18 01:59:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:31,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:32,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:32,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294730031] [2022-01-18 01:59:32,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294730031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:32,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364560845] [2022-01-18 01:59:32,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:59:32,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:32,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:32,219 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:32,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 01:59:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:32,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:32,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:32,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:33,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364560845] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:33,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:33,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:33,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067538844] [2022-01-18 01:59:33,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:33,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:33,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:33,355 INFO L87 Difference]: Start difference. First operand 1111 states and 2893 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:34,816 INFO L93 Difference]: Finished difference Result 2109 states and 5327 transitions. [2022-01-18 01:59:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 01:59:34,816 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:34,819 INFO L225 Difference]: With dead ends: 2109 [2022-01-18 01:59:34,819 INFO L226 Difference]: Without dead ends: 2058 [2022-01-18 01:59:34,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=710, Invalid=3450, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 01:59:34,819 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 711 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:34,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2671 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2022-01-18 01:59:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1139. [2022-01-18 01:59:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.6274165202108963) internal successors, (2990), 1138 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 01:59:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2990 transitions. [2022-01-18 01:59:34,834 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2990 transitions. Word has length 72 [2022-01-18 01:59:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:34,834 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2990 transitions. [2022-01-18 01:59:34,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2990 transitions. [2022-01-18 01:59:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:34,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:34,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:34,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:35,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:35,045 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:35,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:35,045 INFO L85 PathProgramCache]: Analyzing trace with hash -243940465, now seen corresponding path program 8 times [2022-01-18 01:59:35,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:35,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037010613] [2022-01-18 01:59:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:35,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:35,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037010613] [2022-01-18 01:59:35,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037010613] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412432704] [2022-01-18 01:59:35,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:59:35,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:35,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:35,349 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:35,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 01:59:35,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:59:35,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:35,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:35,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:35,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:36,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412432704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:36,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:36,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:36,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132520740] [2022-01-18 01:59:36,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:36,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:36,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:36,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:36,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:36,118 INFO L87 Difference]: Start difference. First operand 1139 states and 2990 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:37,387 INFO L93 Difference]: Finished difference Result 2161 states and 5535 transitions. [2022-01-18 01:59:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 01:59:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:37,390 INFO L225 Difference]: With dead ends: 2161 [2022-01-18 01:59:37,390 INFO L226 Difference]: Without dead ends: 2035 [2022-01-18 01:59:37,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=852, Invalid=4404, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 01:59:37,391 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 653 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:37,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 3078 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:59:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-01-18 01:59:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1111. [2022-01-18 01:59:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 2.606306306306306) internal successors, (2893), 1110 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2893 transitions. [2022-01-18 01:59:37,405 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2893 transitions. Word has length 72 [2022-01-18 01:59:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:37,405 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 2893 transitions. [2022-01-18 01:59:37,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:37,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2893 transitions. [2022-01-18 01:59:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:37,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:37,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:37,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:37,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:37,608 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:37,609 INFO L85 PathProgramCache]: Analyzing trace with hash 474800259, now seen corresponding path program 9 times [2022-01-18 01:59:37,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:37,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572439484] [2022-01-18 01:59:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:37,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:37,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572439484] [2022-01-18 01:59:37,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572439484] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291780537] [2022-01-18 01:59:37,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:59:37,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:37,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:37,778 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:37,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 01:59:37,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:59:37,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:37,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:37,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:38,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:38,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291780537] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:38,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:38,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:38,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390149066] [2022-01-18 01:59:38,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:38,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:38,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1235, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:38,642 INFO L87 Difference]: Start difference. First operand 1111 states and 2893 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:40,221 INFO L93 Difference]: Finished difference Result 2074 states and 5310 transitions. [2022-01-18 01:59:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 01:59:40,222 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:40,225 INFO L225 Difference]: With dead ends: 2074 [2022-01-18 01:59:40,225 INFO L226 Difference]: Without dead ends: 1963 [2022-01-18 01:59:40,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=788, Invalid=4324, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 01:59:40,226 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 702 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:40,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 2908 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-01-18 01:59:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1119. [2022-01-18 01:59:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 2.607334525939177) internal successors, (2915), 1118 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 01:59:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 2915 transitions. [2022-01-18 01:59:40,241 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 2915 transitions. Word has length 72 [2022-01-18 01:59:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:40,241 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 2915 transitions. [2022-01-18 01:59:40,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 2915 transitions. [2022-01-18 01:59:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:40,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:40,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:40,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:40,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 01:59:40,458 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1144771997, now seen corresponding path program 10 times [2022-01-18 01:59:40,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:40,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837380710] [2022-01-18 01:59:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:40,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:40,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:40,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837380710] [2022-01-18 01:59:40,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837380710] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:40,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418845308] [2022-01-18 01:59:40,801 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:59:40,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:40,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:40,802 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:40,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 01:59:40,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:59:40,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:40,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:40,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:41,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:41,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418845308] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:41,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:41,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:41,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122979138] [2022-01-18 01:59:41,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:41,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:41,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:41,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:41,859 INFO L87 Difference]: Start difference. First operand 1119 states and 2915 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:43,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:43,792 INFO L93 Difference]: Finished difference Result 2138 states and 5507 transitions. [2022-01-18 01:59:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 01:59:43,792 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:43,796 INFO L225 Difference]: With dead ends: 2138 [2022-01-18 01:59:43,796 INFO L226 Difference]: Without dead ends: 2057 [2022-01-18 01:59:43,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1122, Invalid=5198, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 01:59:43,797 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 732 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:43,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 2873 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:43,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-01-18 01:59:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1127. [2022-01-18 01:59:43,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 2.6119005328596803) internal successors, (2941), 1126 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 2941 transitions. [2022-01-18 01:59:43,818 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 2941 transitions. Word has length 72 [2022-01-18 01:59:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:43,818 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 2941 transitions. [2022-01-18 01:59:43,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 2941 transitions. [2022-01-18 01:59:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:43,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:43,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:43,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:44,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 01:59:44,023 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2123309453, now seen corresponding path program 11 times [2022-01-18 01:59:44,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:44,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375169044] [2022-01-18 01:59:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:44,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:44,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375169044] [2022-01-18 01:59:44,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375169044] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665522567] [2022-01-18 01:59:44,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:59:44,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:44,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:44,280 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:44,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 01:59:44,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 01:59:44,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:44,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:44,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:44,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:45,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665522567] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:45,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:45,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:45,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91488843] [2022-01-18 01:59:45,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:45,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:45,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:45,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:45,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1202, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:45,340 INFO L87 Difference]: Start difference. First operand 1127 states and 2941 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:46,533 INFO L93 Difference]: Finished difference Result 1872 states and 4802 transitions. [2022-01-18 01:59:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 01:59:46,533 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:46,536 INFO L225 Difference]: With dead ends: 1872 [2022-01-18 01:59:46,536 INFO L226 Difference]: Without dead ends: 1821 [2022-01-18 01:59:46,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=683, Invalid=3223, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 01:59:46,536 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 631 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:46,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 2188 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:59:46,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2022-01-18 01:59:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1115. [2022-01-18 01:59:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 2.606822262118492) internal successors, (2904), 1114 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2904 transitions. [2022-01-18 01:59:46,568 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2904 transitions. Word has length 72 [2022-01-18 01:59:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:46,569 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 2904 transitions. [2022-01-18 01:59:46,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2904 transitions. [2022-01-18 01:59:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:46,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:46,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:46,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:46,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 01:59:46,779 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:46,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:46,782 INFO L85 PathProgramCache]: Analyzing trace with hash -407016299, now seen corresponding path program 12 times [2022-01-18 01:59:46,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:46,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832614277] [2022-01-18 01:59:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:46,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:47,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:47,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832614277] [2022-01-18 01:59:47,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832614277] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:47,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112885231] [2022-01-18 01:59:47,021 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:59:47,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:47,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:47,022 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:47,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 01:59:47,091 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 01:59:47,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:47,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:47,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:47,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:48,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112885231] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:48,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:48,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:48,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042874910] [2022-01-18 01:59:48,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:48,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:48,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:48,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:48,090 INFO L87 Difference]: Start difference. First operand 1115 states and 2904 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:49,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:49,499 INFO L93 Difference]: Finished difference Result 1935 states and 4969 transitions. [2022-01-18 01:59:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 01:59:49,499 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:49,502 INFO L225 Difference]: With dead ends: 1935 [2022-01-18 01:59:49,502 INFO L226 Difference]: Without dead ends: 1884 [2022-01-18 01:59:49,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=599, Invalid=3823, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 01:59:49,503 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 526 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:49,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2388 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:59:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2022-01-18 01:59:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1135. [2022-01-18 01:59:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 2.612874779541446) internal successors, (2963), 1134 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2963 transitions. [2022-01-18 01:59:49,517 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2963 transitions. Word has length 72 [2022-01-18 01:59:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:49,517 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 2963 transitions. [2022-01-18 01:59:49,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2963 transitions. [2022-01-18 01:59:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:49,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:49,518 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] [2022-01-18 01:59:49,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:49,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 01:59:49,732 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash -708289975, now seen corresponding path program 13 times [2022-01-18 01:59:49,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:49,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376259023] [2022-01-18 01:59:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:49,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:49,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:49,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376259023] [2022-01-18 01:59:49,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376259023] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:49,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89620292] [2022-01-18 01:59:49,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:59:49,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:49,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:49,980 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:49,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 01:59:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:50,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:50,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:51,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89620292] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:51,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:51,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:51,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075722095] [2022-01-18 01:59:51,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:51,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:51,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:51,050 INFO L87 Difference]: Start difference. First operand 1135 states and 2963 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:53,110 INFO L93 Difference]: Finished difference Result 2213 states and 5601 transitions. [2022-01-18 01:59:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 01:59:53,110 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:53,113 INFO L225 Difference]: With dead ends: 2213 [2022-01-18 01:59:53,113 INFO L226 Difference]: Without dead ends: 2162 [2022-01-18 01:59:53,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=982, Invalid=5338, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 01:59:53,114 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 729 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:53,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 3003 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 01:59:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2022-01-18 01:59:53,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 1163. [2022-01-18 01:59:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 2.629948364888124) internal successors, (3056), 1162 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 3056 transitions. [2022-01-18 01:59:53,129 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 3056 transitions. Word has length 72 [2022-01-18 01:59:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:53,129 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 3056 transitions. [2022-01-18 01:59:53,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 3056 transitions. [2022-01-18 01:59:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:53,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:53,131 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] [2022-01-18 01:59:53,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:53,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:53,347 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:53,347 INFO L85 PathProgramCache]: Analyzing trace with hash 725158333, now seen corresponding path program 14 times [2022-01-18 01:59:53,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:53,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789160894] [2022-01-18 01:59:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:53,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:53,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:53,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789160894] [2022-01-18 01:59:53,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789160894] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:53,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920413925] [2022-01-18 01:59:53,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:59:53,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:53,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:53,609 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:53,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 01:59:53,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:59:53,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:53,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:53,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:54,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:54,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920413925] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:54,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:54,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:54,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309192394] [2022-01-18 01:59:54,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:54,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:54,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:54,670 INFO L87 Difference]: Start difference. First operand 1163 states and 3056 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:56,230 INFO L93 Difference]: Finished difference Result 2099 states and 5377 transitions. [2022-01-18 01:59:56,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 01:59:56,230 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:56,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:56,233 INFO L225 Difference]: With dead ends: 2099 [2022-01-18 01:59:56,233 INFO L226 Difference]: Without dead ends: 2018 [2022-01-18 01:59:56,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=694, Invalid=3998, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 01:59:56,234 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 612 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:56,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 2694 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:56,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-01-18 01:59:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1139. [2022-01-18 01:59:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.609841827768014) internal successors, (2970), 1138 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2970 transitions. [2022-01-18 01:59:56,249 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2970 transitions. Word has length 72 [2022-01-18 01:59:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:56,250 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2970 transitions. [2022-01-18 01:59:56,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2970 transitions. [2022-01-18 01:59:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:56,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:56,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:56,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 01:59:56,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 01:59:56,466 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1770743811, now seen corresponding path program 15 times [2022-01-18 01:59:56,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:56,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438112764] [2022-01-18 01:59:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:56,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:56,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:56,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438112764] [2022-01-18 01:59:56,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438112764] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:56,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631307663] [2022-01-18 01:59:56,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:59:56,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:56,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:56,695 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:56,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 01:59:56,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:59:56,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:56,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:56,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:59:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:57,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:59:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:57,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631307663] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:59:57,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:59:57,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 01:59:57,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244047035] [2022-01-18 01:59:57,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:59:57,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 01:59:57,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:59:57,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 01:59:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:59:57,795 INFO L87 Difference]: Start difference. First operand 1139 states and 2970 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:59:59,386 INFO L93 Difference]: Finished difference Result 2052 states and 5250 transitions. [2022-01-18 01:59:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 01:59:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 01:59:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:59:59,389 INFO L225 Difference]: With dead ends: 2052 [2022-01-18 01:59:59,389 INFO L226 Difference]: Without dead ends: 1956 [2022-01-18 01:59:59,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=617, Invalid=4353, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 01:59:59,390 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 532 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:59:59,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 3460 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:59:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2022-01-18 01:59:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1147. [2022-01-18 01:59:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.6108202443280977) internal successors, (2992), 1146 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2992 transitions. [2022-01-18 01:59:59,405 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2992 transitions. Word has length 72 [2022-01-18 01:59:59,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:59:59,405 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2992 transitions. [2022-01-18 01:59:59,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:59:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2992 transitions. [2022-01-18 01:59:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:59:59,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:59:59,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:59:59,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 01:59:59,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:59,610 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:59:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:59:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash 904651229, now seen corresponding path program 16 times [2022-01-18 01:59:59,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:59:59,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719290142] [2022-01-18 01:59:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:59:59,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:59:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:59:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:59:59,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:59:59,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719290142] [2022-01-18 01:59:59,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719290142] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:59:59,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620456082] [2022-01-18 01:59:59,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:59:59,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:59:59,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:59:59,852 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:59:59,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 01:59:59,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:59:59,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:59:59,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 01:59:59,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:00,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:00,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620456082] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:00,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:00,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:00,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710637655] [2022-01-18 02:00:00,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:00,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:00,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:00,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:00,906 INFO L87 Difference]: Start difference. First operand 1147 states and 2992 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:02,869 INFO L93 Difference]: Finished difference Result 2310 states and 5913 transitions. [2022-01-18 02:00:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 02:00:02,870 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:02,872 INFO L225 Difference]: With dead ends: 2310 [2022-01-18 02:00:02,872 INFO L226 Difference]: Without dead ends: 2184 [2022-01-18 02:00:02,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=860, Invalid=4992, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 02:00:02,874 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 767 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:02,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 3528 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:00:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-01-18 02:00:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1151. [2022-01-18 02:00:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 2.614782608695652) internal successors, (3007), 1150 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 3007 transitions. [2022-01-18 02:00:02,890 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 3007 transitions. Word has length 72 [2022-01-18 02:00:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:02,890 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 3007 transitions. [2022-01-18 02:00:02,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 3007 transitions. [2022-01-18 02:00:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:02,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:02,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:02,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:03,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:03,107 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash -122234617, now seen corresponding path program 17 times [2022-01-18 02:00:03,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:03,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446447259] [2022-01-18 02:00:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:03,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:03,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:03,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446447259] [2022-01-18 02:00:03,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446447259] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:03,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219971842] [2022-01-18 02:00:03,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:00:03,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:03,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:03,353 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:03,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 02:00:03,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:00:03,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:03,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:03,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:03,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:04,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219971842] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:04,413 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:04,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:04,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240422926] [2022-01-18 02:00:04,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:04,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:04,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:04,414 INFO L87 Difference]: Start difference. First operand 1151 states and 3007 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:05,636 INFO L93 Difference]: Finished difference Result 2015 states and 5147 transitions. [2022-01-18 02:00:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:00:05,637 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:05,641 INFO L225 Difference]: With dead ends: 2015 [2022-01-18 02:00:05,641 INFO L226 Difference]: Without dead ends: 1964 [2022-01-18 02:00:05,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=590, Invalid=3442, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 02:00:05,643 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 559 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:05,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 2504 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:00:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-01-18 02:00:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1131. [2022-01-18 02:00:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.6088495575221238) internal successors, (2948), 1130 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2948 transitions. [2022-01-18 02:00:05,662 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2948 transitions. Word has length 72 [2022-01-18 02:00:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:05,662 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 2948 transitions. [2022-01-18 02:00:05,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2948 transitions. [2022-01-18 02:00:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:05,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:05,664 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] [2022-01-18 02:00:05,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:05,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-18 02:00:05,879 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1615670163, now seen corresponding path program 18 times [2022-01-18 02:00:05,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:05,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782873550] [2022-01-18 02:00:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:05,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:06,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:06,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782873550] [2022-01-18 02:00:06,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782873550] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:06,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25496257] [2022-01-18 02:00:06,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:00:06,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:06,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:06,131 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:06,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 02:00:06,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:00:06,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:06,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:06,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:06,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:07,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25496257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:07,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:07,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:07,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227732248] [2022-01-18 02:00:07,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:07,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:07,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:07,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:07,020 INFO L87 Difference]: Start difference. First operand 1131 states and 2948 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:08,388 INFO L93 Difference]: Finished difference Result 2197 states and 5638 transitions. [2022-01-18 02:00:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 02:00:08,388 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:08,412 INFO L225 Difference]: With dead ends: 2197 [2022-01-18 02:00:08,412 INFO L226 Difference]: Without dead ends: 2086 [2022-01-18 02:00:08,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=904, Invalid=5576, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 02:00:08,413 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 681 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:08,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2988 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:00:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-01-18 02:00:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1139. [2022-01-18 02:00:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 2.609841827768014) internal successors, (2970), 1138 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 2970 transitions. [2022-01-18 02:00:08,428 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 2970 transitions. Word has length 72 [2022-01-18 02:00:08,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:08,428 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 2970 transitions. [2022-01-18 02:00:08,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 2970 transitions. [2022-01-18 02:00:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:08,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:08,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:08,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:08,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 02:00:08,640 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:08,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:08,640 INFO L85 PathProgramCache]: Analyzing trace with hash -3902093, now seen corresponding path program 19 times [2022-01-18 02:00:08,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:08,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67699387] [2022-01-18 02:00:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:08,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:08,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:08,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67699387] [2022-01-18 02:00:08,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67699387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:08,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884562073] [2022-01-18 02:00:08,896 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:00:08,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:08,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:08,898 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:08,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 02:00:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:08,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:08,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:09,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:09,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884562073] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:09,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:09,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:09,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322233383] [2022-01-18 02:00:09,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:09,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:09,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:09,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:09,931 INFO L87 Difference]: Start difference. First operand 1139 states and 2970 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:11,479 INFO L93 Difference]: Finished difference Result 2225 states and 5748 transitions. [2022-01-18 02:00:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 02:00:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:11,483 INFO L225 Difference]: With dead ends: 2225 [2022-01-18 02:00:11,484 INFO L226 Difference]: Without dead ends: 2144 [2022-01-18 02:00:11,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1205, Invalid=6277, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 02:00:11,485 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 717 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:11,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 2965 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:00:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2022-01-18 02:00:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1147. [2022-01-18 02:00:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 2.614310645724258) internal successors, (2996), 1146 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2996 transitions. [2022-01-18 02:00:11,506 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2996 transitions. Word has length 72 [2022-01-18 02:00:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:11,506 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 2996 transitions. [2022-01-18 02:00:11,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2996 transitions. [2022-01-18 02:00:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:11,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:11,508 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] [2022-01-18 02:00:11,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:11,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 02:00:11,729 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:11,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:11,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1030787939, now seen corresponding path program 20 times [2022-01-18 02:00:11,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:11,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27054569] [2022-01-18 02:00:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:11,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:11,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:11,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27054569] [2022-01-18 02:00:11,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27054569] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:11,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231699824] [2022-01-18 02:00:11,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:00:11,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:11,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:11,962 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:11,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 02:00:12,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:00:12,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:12,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:12,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:12,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:12,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231699824] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:12,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:12,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:12,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131547393] [2022-01-18 02:00:12,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:12,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:12,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:12,906 INFO L87 Difference]: Start difference. First operand 1147 states and 2996 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:14,309 INFO L93 Difference]: Finished difference Result 1995 states and 5130 transitions. [2022-01-18 02:00:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 02:00:14,310 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:14,313 INFO L225 Difference]: With dead ends: 1995 [2022-01-18 02:00:14,313 INFO L226 Difference]: Without dead ends: 1944 [2022-01-18 02:00:14,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=792, Invalid=4320, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 02:00:14,314 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 533 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:14,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 2865 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:00:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-01-18 02:00:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1123. [2022-01-18 02:00:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 2.607843137254902) internal successors, (2926), 1122 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 2926 transitions. [2022-01-18 02:00:14,331 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 2926 transitions. Word has length 72 [2022-01-18 02:00:14,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:14,331 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 2926 transitions. [2022-01-18 02:00:14,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 2926 transitions. [2022-01-18 02:00:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:14,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:14,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:14,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:14,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 02:00:14,535 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash 924694273, now seen corresponding path program 21 times [2022-01-18 02:00:14,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:14,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106960258] [2022-01-18 02:00:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:14,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:14,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:14,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106960258] [2022-01-18 02:00:14,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106960258] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:14,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819547844] [2022-01-18 02:00:14,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:00:14,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:14,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:14,798 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:14,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 02:00:14,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:00:14,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:14,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:14,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:15,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:15,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819547844] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:15,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:15,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:15,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815271467] [2022-01-18 02:00:15,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:15,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:15,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1241, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:15,575 INFO L87 Difference]: Start difference. First operand 1123 states and 2926 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:18,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:18,629 INFO L93 Difference]: Finished difference Result 2728 states and 6932 transitions. [2022-01-18 02:00:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 02:00:18,629 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:18,633 INFO L225 Difference]: With dead ends: 2728 [2022-01-18 02:00:18,633 INFO L226 Difference]: Without dead ends: 2566 [2022-01-18 02:00:18,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3288 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1241, Invalid=9265, Unknown=0, NotChecked=0, Total=10506 [2022-01-18 02:00:18,635 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 964 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:18,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [964 Valid, 3948 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:00:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-01-18 02:00:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1201. [2022-01-18 02:00:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 2.62) internal successors, (3144), 1200 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3144 transitions. [2022-01-18 02:00:18,653 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3144 transitions. Word has length 72 [2022-01-18 02:00:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:18,654 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 3144 transitions. [2022-01-18 02:00:18,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3144 transitions. [2022-01-18 02:00:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:18,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:18,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:18,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:18,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:18,872 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash -694877983, now seen corresponding path program 22 times [2022-01-18 02:00:18,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:18,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958527779] [2022-01-18 02:00:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:18,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:19,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958527779] [2022-01-18 02:00:19,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958527779] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931308134] [2022-01-18 02:00:19,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:00:19,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:19,092 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:19,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 02:00:19,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:00:19,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:19,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:19,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:19,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:19,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931308134] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:19,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:19,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:19,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475799003] [2022-01-18 02:00:19,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:19,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:19,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:19,796 INFO L87 Difference]: Start difference. First operand 1201 states and 3144 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:22,385 INFO L93 Difference]: Finished difference Result 3002 states and 7626 transitions. [2022-01-18 02:00:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:00:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:22,389 INFO L225 Difference]: With dead ends: 3002 [2022-01-18 02:00:22,389 INFO L226 Difference]: Without dead ends: 2870 [2022-01-18 02:00:22,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1626, Invalid=10364, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 02:00:22,391 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 1326 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:22,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 2975 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:00:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-01-18 02:00:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1217. [2022-01-18 02:00:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1216 states have (on average 2.6282894736842106) internal successors, (3196), 1216 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 3196 transitions. [2022-01-18 02:00:22,409 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 3196 transitions. Word has length 72 [2022-01-18 02:00:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:22,409 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 3196 transitions. [2022-01-18 02:00:22,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:22,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 3196 transitions. [2022-01-18 02:00:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:22,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:22,411 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] [2022-01-18 02:00:22,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:22,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 02:00:22,626 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:22,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1721763829, now seen corresponding path program 23 times [2022-01-18 02:00:22,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:22,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374450257] [2022-01-18 02:00:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:22,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:22,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:22,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374450257] [2022-01-18 02:00:22,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374450257] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:22,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542172262] [2022-01-18 02:00:22,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:00:22,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:22,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:22,825 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:22,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 02:00:22,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:00:22,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:22,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:22,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:23,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:23,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542172262] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:23,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:23,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:23,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12526591] [2022-01-18 02:00:23,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:23,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:23,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:23,651 INFO L87 Difference]: Start difference. First operand 1217 states and 3196 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:25,611 INFO L93 Difference]: Finished difference Result 2780 states and 7141 transitions. [2022-01-18 02:00:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 02:00:25,611 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:25,615 INFO L225 Difference]: With dead ends: 2780 [2022-01-18 02:00:25,616 INFO L226 Difference]: Without dead ends: 2678 [2022-01-18 02:00:25,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2151 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1112, Invalid=6198, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 02:00:25,617 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1003 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:25,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 2960 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:00:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-01-18 02:00:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1201. [2022-01-18 02:00:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 2.6233333333333335) internal successors, (3148), 1200 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3148 transitions. [2022-01-18 02:00:25,638 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3148 transitions. Word has length 72 [2022-01-18 02:00:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:25,638 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 3148 transitions. [2022-01-18 02:00:25,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:25,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3148 transitions. [2022-01-18 02:00:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:25,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:25,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:25,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:25,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:25,857 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash -610475651, now seen corresponding path program 24 times [2022-01-18 02:00:25,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562561767] [2022-01-18 02:00:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:25,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:26,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562561767] [2022-01-18 02:00:26,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562561767] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:26,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817345569] [2022-01-18 02:00:26,028 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:00:26,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:26,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:26,030 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:26,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 02:00:26,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:00:26,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:26,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:00:26,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:26,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:27,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817345569] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:27,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:27,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:00:27,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523797119] [2022-01-18 02:00:27,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:27,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:00:27,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:00:27,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1382, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:00:27,038 INFO L87 Difference]: Start difference. First operand 1201 states and 3148 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:27,808 INFO L93 Difference]: Finished difference Result 2142 states and 5492 transitions. [2022-01-18 02:00:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 02:00:27,809 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:27,812 INFO L225 Difference]: With dead ends: 2142 [2022-01-18 02:00:27,812 INFO L226 Difference]: Without dead ends: 2016 [2022-01-18 02:00:27,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=700, Invalid=3460, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 02:00:27,813 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 697 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:27,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 3075 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:00:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2022-01-18 02:00:27,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1245. [2022-01-18 02:00:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1244 states have (on average 2.627813504823151) internal successors, (3269), 1244 states have internal predecessors, (3269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 3269 transitions. [2022-01-18 02:00:27,833 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 3269 transitions. Word has length 72 [2022-01-18 02:00:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:27,833 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 3269 transitions. [2022-01-18 02:00:27,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 3269 transitions. [2022-01-18 02:00:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:27,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:27,835 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:27,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:28,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-01-18 02:00:28,051 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1037850845, now seen corresponding path program 22 times [2022-01-18 02:00:28,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:28,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823046882] [2022-01-18 02:00:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:28,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:28,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:28,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823046882] [2022-01-18 02:00:28,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823046882] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:28,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600242968] [2022-01-18 02:00:28,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:00:28,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:28,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:28,230 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:28,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 02:00:28,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:00:28,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:28,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:00:28,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:28,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:29,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600242968] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:29,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:29,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:00:29,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014679012] [2022-01-18 02:00:29,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:29,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:00:29,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:29,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:00:29,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:00:29,516 INFO L87 Difference]: Start difference. First operand 1245 states and 3269 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:32,709 INFO L93 Difference]: Finished difference Result 3061 states and 7816 transitions. [2022-01-18 02:00:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 02:00:32,709 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:32,714 INFO L225 Difference]: With dead ends: 3061 [2022-01-18 02:00:32,714 INFO L226 Difference]: Without dead ends: 2959 [2022-01-18 02:00:32,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4039 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1335, Invalid=12005, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 02:00:32,716 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1079 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:32,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 4748 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:00:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2022-01-18 02:00:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1249. [2022-01-18 02:00:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 2.6314102564102564) internal successors, (3284), 1248 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3284 transitions. [2022-01-18 02:00:32,755 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3284 transitions. Word has length 72 [2022-01-18 02:00:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:32,755 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 3284 transitions. [2022-01-18 02:00:32,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3284 transitions. [2022-01-18 02:00:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:32,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:32,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:32,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-01-18 02:00:32,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:32,979 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1799078455, now seen corresponding path program 25 times [2022-01-18 02:00:32,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:32,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655202534] [2022-01-18 02:00:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:32,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:33,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:33,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655202534] [2022-01-18 02:00:33,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655202534] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:33,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853018363] [2022-01-18 02:00:33,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:00:33,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:33,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:33,226 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:33,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 02:00:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:33,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:33,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:33,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:34,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853018363] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:34,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:34,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:34,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297743431] [2022-01-18 02:00:34,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:34,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:34,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:34,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:34,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:34,260 INFO L87 Difference]: Start difference. First operand 1249 states and 3284 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:35,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:35,413 INFO L93 Difference]: Finished difference Result 2180 states and 5660 transitions. [2022-01-18 02:00:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 02:00:35,413 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:35,422 INFO L225 Difference]: With dead ends: 2180 [2022-01-18 02:00:35,422 INFO L226 Difference]: Without dead ends: 2129 [2022-01-18 02:00:35,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=633, Invalid=4197, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 02:00:35,423 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 549 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:35,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3156 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:00:35,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-01-18 02:00:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1269. [2022-01-18 02:00:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 2.6364353312302837) internal successors, (3343), 1268 states have internal predecessors, (3343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 3343 transitions. [2022-01-18 02:00:35,442 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 3343 transitions. Word has length 72 [2022-01-18 02:00:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:35,442 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 3343 transitions. [2022-01-18 02:00:35,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 3343 transitions. [2022-01-18 02:00:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:35,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:35,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:35,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:35,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:35,661 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2100352131, now seen corresponding path program 26 times [2022-01-18 02:00:35,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:35,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296565248] [2022-01-18 02:00:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:35,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:35,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:35,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296565248] [2022-01-18 02:00:35,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296565248] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:35,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518917664] [2022-01-18 02:00:35,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:00:35,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:35,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:35,837 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:35,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 02:00:35,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:00:35,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:35,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:35,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:36,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:36,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518917664] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:36,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:36,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:36,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004890370] [2022-01-18 02:00:36,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:36,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:36,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:36,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:36,624 INFO L87 Difference]: Start difference. First operand 1269 states and 3343 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:38,851 INFO L93 Difference]: Finished difference Result 2435 states and 6231 transitions. [2022-01-18 02:00:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:00:38,851 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:38,854 INFO L225 Difference]: With dead ends: 2435 [2022-01-18 02:00:38,854 INFO L226 Difference]: Without dead ends: 2384 [2022-01-18 02:00:38,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1019, Invalid=6291, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 02:00:38,855 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 864 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:38,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 3511 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:00:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2022-01-18 02:00:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1301. [2022-01-18 02:00:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 2.6546153846153846) internal successors, (3451), 1300 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 3451 transitions. [2022-01-18 02:00:38,873 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 3451 transitions. Word has length 72 [2022-01-18 02:00:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:38,874 INFO L470 AbstractCegarLoop]: Abstraction has 1301 states and 3451 transitions. [2022-01-18 02:00:38,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 3451 transitions. [2022-01-18 02:00:38,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:38,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:38,875 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] [2022-01-18 02:00:38,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:39,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 02:00:39,091 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:39,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:39,091 INFO L85 PathProgramCache]: Analyzing trace with hash -666903823, now seen corresponding path program 27 times [2022-01-18 02:00:39,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:39,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309613458] [2022-01-18 02:00:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:39,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:39,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:39,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309613458] [2022-01-18 02:00:39,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309613458] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:39,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838597342] [2022-01-18 02:00:39,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:00:39,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:39,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:39,344 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:39,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 02:00:39,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:00:39,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:39,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:39,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:39,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:40,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838597342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:40,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:40,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:40,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000152786] [2022-01-18 02:00:40,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:40,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:40,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:40,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:40,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:40,289 INFO L87 Difference]: Start difference. First operand 1301 states and 3451 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:42,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:42,277 INFO L93 Difference]: Finished difference Result 2345 states and 6069 transitions. [2022-01-18 02:00:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 02:00:42,277 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:42,281 INFO L225 Difference]: With dead ends: 2345 [2022-01-18 02:00:42,281 INFO L226 Difference]: Without dead ends: 2264 [2022-01-18 02:00:42,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=808, Invalid=5198, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 02:00:42,282 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 675 mSDsluCounter, 3507 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:42,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 3539 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:00:42,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2022-01-18 02:00:42,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1277. [2022-01-18 02:00:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.6371473354231973) internal successors, (3365), 1276 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:42,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3365 transitions. [2022-01-18 02:00:42,298 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3365 transitions. Word has length 72 [2022-01-18 02:00:42,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:42,298 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 3365 transitions. [2022-01-18 02:00:42,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3365 transitions. [2022-01-18 02:00:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:42,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:42,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:42,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:42,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 02:00:42,501 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:42,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1132161329, now seen corresponding path program 28 times [2022-01-18 02:00:42,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:42,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138485742] [2022-01-18 02:00:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:42,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:42,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:42,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138485742] [2022-01-18 02:00:42,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138485742] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:42,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935452486] [2022-01-18 02:00:42,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:00:42,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:42,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:42,763 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:42,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 02:00:42,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:00:42,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:42,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:42,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:43,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:43,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935452486] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:43,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:43,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:43,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948329423] [2022-01-18 02:00:43,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:43,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:43,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:43,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:43,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:43,722 INFO L87 Difference]: Start difference. First operand 1277 states and 3365 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:45,289 INFO L93 Difference]: Finished difference Result 2293 states and 5930 transitions. [2022-01-18 02:00:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 02:00:45,290 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:45,292 INFO L225 Difference]: With dead ends: 2293 [2022-01-18 02:00:45,293 INFO L226 Difference]: Without dead ends: 2197 [2022-01-18 02:00:45,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=669, Invalid=4881, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 02:00:45,293 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 590 mSDsluCounter, 3689 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:45,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 3687 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:00:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2022-01-18 02:00:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 1285. [2022-01-18 02:00:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 2.6378504672897196) internal successors, (3387), 1284 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 3387 transitions. [2022-01-18 02:00:45,311 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 3387 transitions. Word has length 72 [2022-01-18 02:00:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:45,311 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 3387 transitions. [2022-01-18 02:00:45,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 3387 transitions. [2022-01-18 02:00:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:45,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:45,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:45,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:45,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-01-18 02:00:45,518 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:45,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:45,518 INFO L85 PathProgramCache]: Analyzing trace with hash -487410927, now seen corresponding path program 29 times [2022-01-18 02:00:45,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:45,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391516172] [2022-01-18 02:00:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:45,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:45,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:45,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391516172] [2022-01-18 02:00:45,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391516172] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:45,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099902615] [2022-01-18 02:00:45,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:00:45,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:45,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:45,792 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:45,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 02:00:45,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:00:45,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:45,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:00:45,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:46,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:47,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099902615] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:47,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:47,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:00:47,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158011875] [2022-01-18 02:00:47,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:47,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:00:47,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:00:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1407, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:00:47,005 INFO L87 Difference]: Start difference. First operand 1285 states and 3387 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:49,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:49,465 INFO L93 Difference]: Finished difference Result 2570 states and 6644 transitions. [2022-01-18 02:00:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 02:00:49,465 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:49,468 INFO L225 Difference]: With dead ends: 2570 [2022-01-18 02:00:49,468 INFO L226 Difference]: Without dead ends: 2474 [2022-01-18 02:00:49,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1461, Invalid=7469, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 02:00:49,474 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 948 mSDsluCounter, 3588 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:49,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 3614 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:00:49,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2022-01-18 02:00:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1333. [2022-01-18 02:00:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 2.650900900900901) internal successors, (3531), 1332 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 3531 transitions. [2022-01-18 02:00:49,503 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 3531 transitions. Word has length 72 [2022-01-18 02:00:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:49,503 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 3531 transitions. [2022-01-18 02:00:49,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 3531 transitions. [2022-01-18 02:00:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:49,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:49,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:49,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:49,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-01-18 02:00:49,725 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:49,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1514296773, now seen corresponding path program 30 times [2022-01-18 02:00:49,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:49,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302290679] [2022-01-18 02:00:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:49,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:49,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:49,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302290679] [2022-01-18 02:00:49,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302290679] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:49,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636099765] [2022-01-18 02:00:49,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:00:49,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:49,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:49,917 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:49,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 02:00:50,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:00:50,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:50,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:50,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:50,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:50,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636099765] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:50,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:50,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:50,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132994473] [2022-01-18 02:00:50,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:50,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:50,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:50,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:50,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:50,906 INFO L87 Difference]: Start difference. First operand 1333 states and 3531 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:53,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:53,027 INFO L93 Difference]: Finished difference Result 2528 states and 6508 transitions. [2022-01-18 02:00:53,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 02:00:53,027 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:53,030 INFO L225 Difference]: With dead ends: 2528 [2022-01-18 02:00:53,030 INFO L226 Difference]: Without dead ends: 2477 [2022-01-18 02:00:53,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=852, Invalid=5790, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:00:53,031 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 704 mSDsluCounter, 3970 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:53,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 3934 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:00:53,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2022-01-18 02:00:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 1337. [2022-01-18 02:00:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1336 states have (on average 2.663173652694611) internal successors, (3558), 1336 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 3558 transitions. [2022-01-18 02:00:53,050 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 3558 transitions. Word has length 72 [2022-01-18 02:00:53,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:53,050 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 3558 transitions. [2022-01-18 02:00:53,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 3558 transitions. [2022-01-18 02:00:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:53,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:53,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:53,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:53,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 02:00:53,253 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:53,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:53,253 INFO L85 PathProgramCache]: Analyzing trace with hash 223608007, now seen corresponding path program 31 times [2022-01-18 02:00:53,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:53,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856179804] [2022-01-18 02:00:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:53,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:53,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:53,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856179804] [2022-01-18 02:00:53,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856179804] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:53,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365726230] [2022-01-18 02:00:53,464 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:00:53,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:53,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:53,465 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:53,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 02:00:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:53,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:53,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:54,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:54,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365726230] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:54,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:54,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:54,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941865517] [2022-01-18 02:00:54,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:54,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:54,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:54,509 INFO L87 Difference]: Start difference. First operand 1337 states and 3558 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:00:56,802 INFO L93 Difference]: Finished difference Result 2516 states and 6569 transitions. [2022-01-18 02:00:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 02:00:56,802 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:00:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:00:56,805 INFO L225 Difference]: With dead ends: 2516 [2022-01-18 02:00:56,805 INFO L226 Difference]: Without dead ends: 2405 [2022-01-18 02:00:56,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2188 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=988, Invalid=7022, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 02:00:56,806 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 734 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:00:56,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 3652 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:00:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2022-01-18 02:00:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 1345. [2022-01-18 02:00:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1344 states have (on average 2.6607142857142856) internal successors, (3576), 1344 states have internal predecessors, (3576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 3576 transitions. [2022-01-18 02:00:56,824 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 3576 transitions. Word has length 72 [2022-01-18 02:00:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:00:56,824 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 3576 transitions. [2022-01-18 02:00:56,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:00:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 3576 transitions. [2022-01-18 02:00:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:00:56,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:00:56,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:00:56,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 02:00:57,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 02:00:57,026 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:00:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:00:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1395964249, now seen corresponding path program 32 times [2022-01-18 02:00:57,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:00:57,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466966666] [2022-01-18 02:00:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:00:57,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:00:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:00:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:57,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:00:57,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466966666] [2022-01-18 02:00:57,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466966666] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:00:57,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715821085] [2022-01-18 02:00:57,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:00:57,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:00:57,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:00:57,195 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:00:57,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 02:00:57,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:00:57,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:00:57,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:00:57,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:00:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:57,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:00:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:00:58,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715821085] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:00:58,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:00:58,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:00:58,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401763357] [2022-01-18 02:00:58,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:00:58,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:00:58,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:00:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:00:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:00:58,031 INFO L87 Difference]: Start difference. First operand 1345 states and 3576 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:00,706 INFO L93 Difference]: Finished difference Result 2687 states and 7038 transitions. [2022-01-18 02:01:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 02:01:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:00,710 INFO L225 Difference]: With dead ends: 2687 [2022-01-18 02:01:00,711 INFO L226 Difference]: Without dead ends: 2606 [2022-01-18 02:01:00,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3896 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1702, Invalid=10954, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 02:01:00,712 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 856 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:00,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 4488 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:01:00,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-01-18 02:01:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1321. [2022-01-18 02:01:00,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 2.65) internal successors, (3498), 1320 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 3498 transitions. [2022-01-18 02:01:00,736 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 3498 transitions. Word has length 72 [2022-01-18 02:01:00,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:00,736 INFO L470 AbstractCegarLoop]: Abstraction has 1321 states and 3498 transitions. [2022-01-18 02:01:00,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:00,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 3498 transitions. [2022-01-18 02:01:00,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:00,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:00,739 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] [2022-01-18 02:01:00,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:00,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:00,960 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:00,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1872117201, now seen corresponding path program 33 times [2022-01-18 02:01:00,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:00,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077791769] [2022-01-18 02:01:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:00,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:01,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:01,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077791769] [2022-01-18 02:01:01,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077791769] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:01,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396636823] [2022-01-18 02:01:01,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:01:01,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:01,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:01,179 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:01,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 02:01:01,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:01:01,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:01,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:01:01,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:01,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:02,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396636823] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:02,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:02,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:01:02,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750204612] [2022-01-18 02:01:02,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:02,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:01:02,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:02,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:01:02,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:01:02,247 INFO L87 Difference]: Start difference. First operand 1321 states and 3498 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:04,142 INFO L93 Difference]: Finished difference Result 2285 states and 5971 transitions. [2022-01-18 02:01:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 02:01:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:04,145 INFO L225 Difference]: With dead ends: 2285 [2022-01-18 02:01:04,145 INFO L226 Difference]: Without dead ends: 2234 [2022-01-18 02:01:04,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=873, Invalid=5607, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 02:01:04,146 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 675 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:04,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 2824 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:01:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2022-01-18 02:01:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1309. [2022-01-18 02:01:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1308 states have (on average 2.6490825688073394) internal successors, (3465), 1308 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 3465 transitions. [2022-01-18 02:01:04,163 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 3465 transitions. Word has length 72 [2022-01-18 02:01:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:04,163 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 3465 transitions. [2022-01-18 02:01:04,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 3465 transitions. [2022-01-18 02:01:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:04,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:04,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:04,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:04,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:04,375 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash -467367883, now seen corresponding path program 34 times [2022-01-18 02:01:04,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:04,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999642140] [2022-01-18 02:01:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:04,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:04,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:04,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999642140] [2022-01-18 02:01:04,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999642140] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:04,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455732392] [2022-01-18 02:01:04,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:01:04,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:04,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:04,537 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:04,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 02:01:04,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:01:04,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:04,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:01:04,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:04,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:05,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455732392] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:05,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:05,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:01:05,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855878549] [2022-01-18 02:01:05,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:05,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:01:05,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:01:05,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:01:05,293 INFO L87 Difference]: Start difference. First operand 1309 states and 3465 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:08,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:08,861 INFO L93 Difference]: Finished difference Result 3240 states and 8347 transitions. [2022-01-18 02:01:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 02:01:08,861 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:08,865 INFO L225 Difference]: With dead ends: 3240 [2022-01-18 02:01:08,865 INFO L226 Difference]: Without dead ends: 3078 [2022-01-18 02:01:08,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5603 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1739, Invalid=14773, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 02:01:08,866 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1241 mSDsluCounter, 4014 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:08,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 4026 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:01:08,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-01-18 02:01:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 1381. [2022-01-18 02:01:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 2.6717391304347826) internal successors, (3687), 1380 states have internal predecessors, (3687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 3687 transitions. [2022-01-18 02:01:08,884 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 3687 transitions. Word has length 72 [2022-01-18 02:01:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:08,885 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 3687 transitions. [2022-01-18 02:01:08,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 3687 transitions. [2022-01-18 02:01:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:08,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:08,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:08,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:09,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:09,091 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2086940139, now seen corresponding path program 35 times [2022-01-18 02:01:09,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:09,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249783749] [2022-01-18 02:01:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:09,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:09,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:09,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249783749] [2022-01-18 02:01:09,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249783749] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:09,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130170419] [2022-01-18 02:01:09,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:01:09,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:09,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:09,350 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:09,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 02:01:09,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:01:09,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:09,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:01:09,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:10,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:10,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130170419] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:10,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:10,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:01:10,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564064124] [2022-01-18 02:01:10,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:10,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:01:10,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:01:10,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:01:10,524 INFO L87 Difference]: Start difference. First operand 1381 states and 3687 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:12,834 INFO L93 Difference]: Finished difference Result 2915 states and 7622 transitions. [2022-01-18 02:01:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:01:12,835 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:12,839 INFO L225 Difference]: With dead ends: 2915 [2022-01-18 02:01:12,839 INFO L226 Difference]: Without dead ends: 2804 [2022-01-18 02:01:12,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3317 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2042, Invalid=8878, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 02:01:12,843 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 1160 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:12,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 2957 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:01:12,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2022-01-18 02:01:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1401. [2022-01-18 02:01:12,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 2.6785714285714284) internal successors, (3750), 1400 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 3750 transitions. [2022-01-18 02:01:12,871 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 3750 transitions. Word has length 72 [2022-01-18 02:01:12,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:12,871 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 3750 transitions. [2022-01-18 02:01:12,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 3750 transitions. [2022-01-18 02:01:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:12,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:12,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:12,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:13,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:13,075 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1181141311, now seen corresponding path program 36 times [2022-01-18 02:01:13,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:13,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124749927] [2022-01-18 02:01:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:13,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:13,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:13,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124749927] [2022-01-18 02:01:13,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124749927] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:13,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617390889] [2022-01-18 02:01:13,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:01:13,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:13,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:13,273 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:13,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 02:01:13,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:01:13,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:13,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:01:13,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:13,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:14,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617390889] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:14,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:14,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:01:14,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628123159] [2022-01-18 02:01:14,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:14,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:01:14,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:14,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:01:14,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:01:14,113 INFO L87 Difference]: Start difference. First operand 1401 states and 3750 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:16,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:16,881 INFO L93 Difference]: Finished difference Result 3430 states and 8947 transitions. [2022-01-18 02:01:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 02:01:16,881 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:16,886 INFO L225 Difference]: With dead ends: 3430 [2022-01-18 02:01:16,886 INFO L226 Difference]: Without dead ends: 3328 [2022-01-18 02:01:16,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4252 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1760, Invalid=11350, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 02:01:16,887 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1297 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:16,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1297 Valid, 3664 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:01:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2022-01-18 02:01:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 1425. [2022-01-18 02:01:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 2.699438202247191) internal successors, (3844), 1424 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 3844 transitions. [2022-01-18 02:01:16,908 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 3844 transitions. Word has length 72 [2022-01-18 02:01:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:16,909 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 3844 transitions. [2022-01-18 02:01:16,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 3844 transitions. [2022-01-18 02:01:16,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:16,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:16,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:16,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:17,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 02:01:17,126 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:17,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:17,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2002537807, now seen corresponding path program 37 times [2022-01-18 02:01:17,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:17,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181657451] [2022-01-18 02:01:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:17,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:17,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:17,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181657451] [2022-01-18 02:01:17,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181657451] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:17,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24279540] [2022-01-18 02:01:17,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:01:17,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:17,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:17,329 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:17,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 02:01:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:17,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:01:17,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:17,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:18,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24279540] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:18,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:18,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:01:18,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109492473] [2022-01-18 02:01:18,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:18,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:01:18,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:18,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:01:18,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:01:18,378 INFO L87 Difference]: Start difference. First operand 1425 states and 3844 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:19,662 INFO L93 Difference]: Finished difference Result 2375 states and 6273 transitions. [2022-01-18 02:01:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:01:19,662 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:19,665 INFO L225 Difference]: With dead ends: 2375 [2022-01-18 02:01:19,665 INFO L226 Difference]: Without dead ends: 2249 [2022-01-18 02:01:19,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=536, Invalid=4156, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 02:01:19,665 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 642 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:19,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 2877 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:01:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2022-01-18 02:01:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1425. [2022-01-18 02:01:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 2.693820224719101) internal successors, (3836), 1424 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 3836 transitions. [2022-01-18 02:01:19,682 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 3836 transitions. Word has length 72 [2022-01-18 02:01:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:19,683 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 3836 transitions. [2022-01-18 02:01:19,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 3836 transitions. [2022-01-18 02:01:19,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:19,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:19,684 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:19,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:19,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-18 02:01:19,890 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:19,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1441977873, now seen corresponding path program 23 times [2022-01-18 02:01:19,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:19,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030033174] [2022-01-18 02:01:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:19,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:20,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:20,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030033174] [2022-01-18 02:01:20,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030033174] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:20,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974067348] [2022-01-18 02:01:20,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:01:20,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:20,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:20,068 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:20,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 02:01:20,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:01:20,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:20,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:01:20,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:20,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:21,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974067348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:21,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:21,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:01:21,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486721602] [2022-01-18 02:01:21,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:21,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:01:21,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:01:21,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:01:21,168 INFO L87 Difference]: Start difference. First operand 1425 states and 3836 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:25,349 INFO L93 Difference]: Finished difference Result 3799 states and 9840 transitions. [2022-01-18 02:01:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 02:01:25,349 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:25,354 INFO L225 Difference]: With dead ends: 3799 [2022-01-18 02:01:25,354 INFO L226 Difference]: Without dead ends: 3697 [2022-01-18 02:01:25,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7627 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2451, Invalid=20199, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 02:01:25,357 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1669 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:25,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 4791 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:01:25,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2022-01-18 02:01:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1481. [2022-01-18 02:01:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 2.7256756756756757) internal successors, (4034), 1480 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 4034 transitions. [2022-01-18 02:01:25,385 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 4034 transitions. Word has length 72 [2022-01-18 02:01:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:25,385 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 4034 transitions. [2022-01-18 02:01:25,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 4034 transitions. [2022-01-18 02:01:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:25,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:25,388 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] [2022-01-18 02:01:25,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:25,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:25,589 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:25,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:25,589 INFO L85 PathProgramCache]: Analyzing trace with hash -300154625, now seen corresponding path program 38 times [2022-01-18 02:01:25,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:25,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839614235] [2022-01-18 02:01:25,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:25,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:25,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:25,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839614235] [2022-01-18 02:01:25,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839614235] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:25,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631938819] [2022-01-18 02:01:25,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:01:25,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:25,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:25,735 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:25,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 02:01:25,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:01:25,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:25,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:01:25,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:26,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:26,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631938819] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:26,381 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:26,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:01:26,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938748647] [2022-01-18 02:01:26,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:26,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:01:26,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:26,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:01:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:01:26,382 INFO L87 Difference]: Start difference. First operand 1481 states and 4034 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:30,407 INFO L93 Difference]: Finished difference Result 4297 states and 11095 transitions. [2022-01-18 02:01:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 02:01:30,408 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:30,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:30,413 INFO L225 Difference]: With dead ends: 4297 [2022-01-18 02:01:30,413 INFO L226 Difference]: Without dead ends: 4054 [2022-01-18 02:01:30,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7882 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2815, Invalid=18941, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 02:01:30,415 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1795 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 4150 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:30,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 4150 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:01:30,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2022-01-18 02:01:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 1533. [2022-01-18 02:01:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 2.7578328981723237) internal successors, (4225), 1532 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 4225 transitions. [2022-01-18 02:01:30,445 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 4225 transitions. Word has length 72 [2022-01-18 02:01:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:30,445 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 4225 transitions. [2022-01-18 02:01:30,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 4225 transitions. [2022-01-18 02:01:30,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:30,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:30,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:30,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-01-18 02:01:30,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:30,669 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1763276851, now seen corresponding path program 39 times [2022-01-18 02:01:30,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:30,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562145025] [2022-01-18 02:01:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:30,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:30,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:30,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562145025] [2022-01-18 02:01:30,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562145025] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:30,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957181830] [2022-01-18 02:01:30,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:01:30,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:30,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:30,812 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:30,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 02:01:30,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:01:30,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:30,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:01:30,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:31,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:31,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957181830] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:31,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:31,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:01:31,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336728351] [2022-01-18 02:01:31,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:31,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:01:31,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:31,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:01:31,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:01:31,773 INFO L87 Difference]: Start difference. First operand 1533 states and 4225 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:34,604 INFO L93 Difference]: Finished difference Result 3300 states and 8541 transitions. [2022-01-18 02:01:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 02:01:34,604 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:34,609 INFO L225 Difference]: With dead ends: 3300 [2022-01-18 02:01:34,609 INFO L226 Difference]: Without dead ends: 3147 [2022-01-18 02:01:34,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3928 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1690, Invalid=10520, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 02:01:34,610 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1194 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:34,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 4083 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:01:34,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2022-01-18 02:01:34,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 1509. [2022-01-18 02:01:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 2.75) internal successors, (4147), 1508 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 4147 transitions. [2022-01-18 02:01:34,635 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 4147 transitions. Word has length 72 [2022-01-18 02:01:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:34,636 INFO L470 AbstractCegarLoop]: Abstraction has 1509 states and 4147 transitions. [2022-01-18 02:01:34,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 4147 transitions. [2022-01-18 02:01:34,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:34,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:34,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:34,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:34,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 02:01:34,849 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:34,849 INFO L85 PathProgramCache]: Analyzing trace with hash -651988673, now seen corresponding path program 40 times [2022-01-18 02:01:34,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:34,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070125183] [2022-01-18 02:01:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:34,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:35,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:35,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070125183] [2022-01-18 02:01:35,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070125183] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:35,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857602548] [2022-01-18 02:01:35,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:01:35,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:35,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:35,059 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:35,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 02:01:35,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:01:35,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:35,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:01:35,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:35,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:35,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857602548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:35,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:35,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:01:35,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475153449] [2022-01-18 02:01:35,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:35,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:01:35,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:01:35,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:01:35,844 INFO L87 Difference]: Start difference. First operand 1509 states and 4147 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:37,338 INFO L93 Difference]: Finished difference Result 2910 states and 7556 transitions. [2022-01-18 02:01:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:01:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:37,341 INFO L225 Difference]: With dead ends: 2910 [2022-01-18 02:01:37,342 INFO L226 Difference]: Without dead ends: 2733 [2022-01-18 02:01:37,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=863, Invalid=6277, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 02:01:37,343 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 897 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:37,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 3408 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:01:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-01-18 02:01:37,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1531. [2022-01-18 02:01:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 2.73921568627451) internal successors, (4191), 1530 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 4191 transitions. [2022-01-18 02:01:37,364 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 4191 transitions. Word has length 72 [2022-01-18 02:01:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:37,364 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 4191 transitions. [2022-01-18 02:01:37,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:37,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 4191 transitions. [2022-01-18 02:01:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:37,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:37,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:37,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:37,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 02:01:37,581 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1891688521, now seen corresponding path program 41 times [2022-01-18 02:01:37,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:37,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205566315] [2022-01-18 02:01:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:37,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:37,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:37,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205566315] [2022-01-18 02:01:37,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205566315] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:37,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989676975] [2022-01-18 02:01:37,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:01:37,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:37,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:37,739 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:37,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 02:01:37,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:01:37,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:37,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:01:37,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:38,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:38,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989676975] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:38,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:38,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:01:38,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362845395] [2022-01-18 02:01:38,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:38,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:01:38,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:01:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1391, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:01:38,579 INFO L87 Difference]: Start difference. First operand 1531 states and 4191 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:39,375 INFO L93 Difference]: Finished difference Result 2300 states and 6085 transitions. [2022-01-18 02:01:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 02:01:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:39,379 INFO L225 Difference]: With dead ends: 2300 [2022-01-18 02:01:39,379 INFO L226 Difference]: Without dead ends: 2159 [2022-01-18 02:01:39,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=701, Invalid=3855, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 02:01:39,380 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 744 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:39,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 3088 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:01:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2022-01-18 02:01:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 1531. [2022-01-18 02:01:39,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 2.7366013071895425) internal successors, (4187), 1530 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 4187 transitions. [2022-01-18 02:01:39,404 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 4187 transitions. Word has length 72 [2022-01-18 02:01:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:39,404 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 4187 transitions. [2022-01-18 02:01:39,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 4187 transitions. [2022-01-18 02:01:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:39,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:39,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:39,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:39,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:39,611 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:39,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash 53724637, now seen corresponding path program 24 times [2022-01-18 02:01:39,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:39,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418570941] [2022-01-18 02:01:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:39,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:39,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:39,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418570941] [2022-01-18 02:01:39,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418570941] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:39,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352415203] [2022-01-18 02:01:39,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:01:39,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:39,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:39,820 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:39,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 02:01:39,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:01:39,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:39,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:01:39,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:40,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:41,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352415203] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:41,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:41,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:01:41,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484799632] [2022-01-18 02:01:41,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:41,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:01:41,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:01:41,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:01:41,274 INFO L87 Difference]: Start difference. First operand 1531 states and 4187 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:47,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:47,390 INFO L93 Difference]: Finished difference Result 3872 states and 10071 transitions. [2022-01-18 02:01:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 02:01:47,391 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:47,396 INFO L225 Difference]: With dead ends: 3872 [2022-01-18 02:01:47,396 INFO L226 Difference]: Without dead ends: 3770 [2022-01-18 02:01:47,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7356 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2479, Invalid=19871, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 02:01:47,401 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1177 mSDsluCounter, 5301 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:47,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 5336 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:01:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2022-01-18 02:01:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 1535. [2022-01-18 02:01:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 2.7392438070404173) internal successors, (4202), 1534 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 4202 transitions. [2022-01-18 02:01:47,435 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 4202 transitions. Word has length 72 [2022-01-18 02:01:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:47,435 INFO L470 AbstractCegarLoop]: Abstraction has 1535 states and 4202 transitions. [2022-01-18 02:01:47,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 4202 transitions. [2022-01-18 02:01:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:47,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:47,437 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:47,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:47,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-01-18 02:01:47,641 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:47,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1130907407, now seen corresponding path program 25 times [2022-01-18 02:01:47,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:47,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891122148] [2022-01-18 02:01:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:47,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:47,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:47,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891122148] [2022-01-18 02:01:47,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891122148] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:47,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491860312] [2022-01-18 02:01:47,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:01:47,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:47,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:47,809 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:47,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 02:01:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:47,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:01:47,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:48,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:48,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491860312] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:48,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:48,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:01:48,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909080096] [2022-01-18 02:01:48,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:48,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:01:48,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:01:48,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:01:48,964 INFO L87 Difference]: Start difference. First operand 1535 states and 4202 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:01:54,902 INFO L93 Difference]: Finished difference Result 4721 states and 12303 transitions. [2022-01-18 02:01:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-18 02:01:54,902 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:01:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:01:54,908 INFO L225 Difference]: With dead ends: 4721 [2022-01-18 02:01:54,908 INFO L226 Difference]: Without dead ends: 4619 [2022-01-18 02:01:54,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10482 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3348, Invalid=26408, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 02:01:54,909 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1417 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 5886 SdHoareTripleChecker+Invalid, 3470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:01:54,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1417 Valid, 5886 Invalid, 3470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:01:54,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4619 states. [2022-01-18 02:01:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4619 to 1539. [2022-01-18 02:01:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 2.7418725617685307) internal successors, (4217), 1538 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 4217 transitions. [2022-01-18 02:01:54,938 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 4217 transitions. Word has length 72 [2022-01-18 02:01:54,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:01:54,938 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 4217 transitions. [2022-01-18 02:01:54,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:01:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 4217 transitions. [2022-01-18 02:01:54,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:01:54,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:01:54,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:01:54,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 02:01:55,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:55,155 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:01:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:01:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2097938847, now seen corresponding path program 26 times [2022-01-18 02:01:55,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:01:55,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417647975] [2022-01-18 02:01:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:01:55,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:01:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:01:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:55,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:01:55,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417647975] [2022-01-18 02:01:55,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417647975] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:01:55,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869501845] [2022-01-18 02:01:55,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:01:55,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:01:55,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:01:55,333 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:01:55,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 02:01:55,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:01:55,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:01:55,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:01:55,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:01:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:55,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:01:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:01:56,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869501845] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:01:56,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:01:56,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:01:56,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087124897] [2022-01-18 02:01:56,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:01:56,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:01:56,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:01:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:01:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:01:56,440 INFO L87 Difference]: Start difference. First operand 1539 states and 4217 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:05,074 INFO L93 Difference]: Finished difference Result 5467 states and 14367 transitions. [2022-01-18 02:02:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-01-18 02:02:05,074 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:05,106 INFO L225 Difference]: With dead ends: 5467 [2022-01-18 02:02:05,106 INFO L226 Difference]: Without dead ends: 5365 [2022-01-18 02:02:05,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17054 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=5192, Invalid=39540, Unknown=0, NotChecked=0, Total=44732 [2022-01-18 02:02:05,108 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1829 mSDsluCounter, 7227 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 7292 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:05,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 7292 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:02:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2022-01-18 02:02:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 1543. [2022-01-18 02:02:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 2.7444876783398184) internal successors, (4232), 1542 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 4232 transitions. [2022-01-18 02:02:05,163 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 4232 transitions. Word has length 72 [2022-01-18 02:02:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:05,163 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 4232 transitions. [2022-01-18 02:02:05,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:05,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 4232 transitions. [2022-01-18 02:02:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:05,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:05,165 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:05,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:05,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:05,381 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1162022189, now seen corresponding path program 27 times [2022-01-18 02:02:05,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:05,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570258193] [2022-01-18 02:02:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:05,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:05,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:05,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570258193] [2022-01-18 02:02:05,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570258193] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:05,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615623176] [2022-01-18 02:02:05,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:02:05,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:05,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:05,631 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:05,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 02:02:05,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:02:05,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:05,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:02:05,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:06,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:06,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615623176] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:06,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:06,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:02:06,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160534726] [2022-01-18 02:02:06,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:06,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:02:06,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:02:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1878, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:02:06,971 INFO L87 Difference]: Start difference. First operand 1543 states and 4232 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:17,494 INFO L93 Difference]: Finished difference Result 5592 states and 14455 transitions. [2022-01-18 02:02:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-01-18 02:02:17,495 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:17,504 INFO L225 Difference]: With dead ends: 5592 [2022-01-18 02:02:17,504 INFO L226 Difference]: Without dead ends: 5490 [2022-01-18 02:02:17,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21115 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=6380, Invalid=48142, Unknown=0, NotChecked=0, Total=54522 [2022-01-18 02:02:17,508 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 2302 mSDsluCounter, 6379 mSDsCounter, 0 mSdLazyCounter, 3753 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 4073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 3753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:17,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2302 Valid, 6461 Invalid, 4073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 3753 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 02:02:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5490 states. [2022-01-18 02:02:17,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5490 to 1519. [2022-01-18 02:02:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.7417654808959155) internal successors, (4162), 1518 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4162 transitions. [2022-01-18 02:02:17,562 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4162 transitions. Word has length 72 [2022-01-18 02:02:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:17,563 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4162 transitions. [2022-01-18 02:02:17,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4162 transitions. [2022-01-18 02:02:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:17,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:17,565 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:17,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:17,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-01-18 02:02:17,775 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1007505865, now seen corresponding path program 28 times [2022-01-18 02:02:17,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:17,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332153286] [2022-01-18 02:02:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:17,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:17,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:17,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332153286] [2022-01-18 02:02:17,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332153286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:17,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336790559] [2022-01-18 02:02:17,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:02:17,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:17,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:17,994 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:17,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 02:02:18,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:02:18,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:18,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:02:18,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:18,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:19,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336790559] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:19,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:19,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:02:19,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99425452] [2022-01-18 02:02:19,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:19,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:02:19,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:19,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:02:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:02:19,371 INFO L87 Difference]: Start difference. First operand 1519 states and 4162 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:22,393 INFO L93 Difference]: Finished difference Result 3279 states and 8628 transitions. [2022-01-18 02:02:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 02:02:22,394 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:22,415 INFO L225 Difference]: With dead ends: 3279 [2022-01-18 02:02:22,415 INFO L226 Difference]: Without dead ends: 3177 [2022-01-18 02:02:22,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4059 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1266, Invalid=12306, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 02:02:22,417 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1119 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:22,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 4735 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:02:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2022-01-18 02:02:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 1555. [2022-01-18 02:02:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 2.7419562419562418) internal successors, (4261), 1554 states have internal predecessors, (4261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 4261 transitions. [2022-01-18 02:02:22,459 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 4261 transitions. Word has length 72 [2022-01-18 02:02:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:22,459 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 4261 transitions. [2022-01-18 02:02:22,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 4261 transitions. [2022-01-18 02:02:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:22,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:22,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:22,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:22,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:22,699 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash 246278255, now seen corresponding path program 42 times [2022-01-18 02:02:22,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:22,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650052303] [2022-01-18 02:02:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:22,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:22,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:22,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650052303] [2022-01-18 02:02:22,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650052303] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:22,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579272707] [2022-01-18 02:02:22,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:02:22,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:22,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:22,906 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:22,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 02:02:22,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:02:22,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:22,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:22,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:23,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:23,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579272707] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:23,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:23,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:23,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91954353] [2022-01-18 02:02:23,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:23,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:23,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:23,671 INFO L87 Difference]: Start difference. First operand 1555 states and 4261 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:25,743 INFO L93 Difference]: Finished difference Result 2700 states and 7143 transitions. [2022-01-18 02:02:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 02:02:25,743 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:25,747 INFO L225 Difference]: With dead ends: 2700 [2022-01-18 02:02:25,748 INFO L226 Difference]: Without dead ends: 2598 [2022-01-18 02:02:25,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=919, Invalid=7271, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 02:02:25,748 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 810 mSDsluCounter, 3225 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:25,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 3284 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:02:25,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2022-01-18 02:02:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 1595. [2022-01-18 02:02:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 2.747176913425345) internal successors, (4379), 1594 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 4379 transitions. [2022-01-18 02:02:25,769 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 4379 transitions. Word has length 72 [2022-01-18 02:02:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:25,769 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 4379 transitions. [2022-01-18 02:02:25,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 4379 transitions. [2022-01-18 02:02:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:25,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:25,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:25,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:26,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:26,004 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:26,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash -54995421, now seen corresponding path program 43 times [2022-01-18 02:02:26,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:26,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854639271] [2022-01-18 02:02:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:26,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:26,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:26,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854639271] [2022-01-18 02:02:26,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854639271] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:26,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893476680] [2022-01-18 02:02:26,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:02:26,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:26,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:26,179 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:26,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 02:02:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:26,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:26,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:26,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:26,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893476680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:26,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:26,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:26,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601202989] [2022-01-18 02:02:26,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:26,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:26,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:26,982 INFO L87 Difference]: Start difference. First operand 1595 states and 4379 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:29,411 INFO L93 Difference]: Finished difference Result 3114 states and 8114 transitions. [2022-01-18 02:02:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 02:02:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:29,444 INFO L225 Difference]: With dead ends: 3114 [2022-01-18 02:02:29,445 INFO L226 Difference]: Without dead ends: 3012 [2022-01-18 02:02:29,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3526 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1370, Invalid=10186, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 02:02:29,446 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1081 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 4510 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:29,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 4510 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:02:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-01-18 02:02:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 1619. [2022-01-18 02:02:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 2.754635352286774) internal successors, (4457), 1618 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4457 transitions. [2022-01-18 02:02:29,472 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4457 transitions. Word has length 72 [2022-01-18 02:02:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:29,472 INFO L470 AbstractCegarLoop]: Abstraction has 1619 states and 4457 transitions. [2022-01-18 02:02:29,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4457 transitions. [2022-01-18 02:02:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:29,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:29,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:29,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:29,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:29,690 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1378452887, now seen corresponding path program 44 times [2022-01-18 02:02:29,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:29,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140652064] [2022-01-18 02:02:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:29,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:29,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:29,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140652064] [2022-01-18 02:02:29,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140652064] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:29,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036486603] [2022-01-18 02:02:29,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:02:29,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:29,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:29,900 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:29,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 02:02:29,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:02:29,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:29,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:29,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:30,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:30,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036486603] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:30,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:30,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:30,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577327279] [2022-01-18 02:02:30,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:30,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:30,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:30,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:30,808 INFO L87 Difference]: Start difference. First operand 1619 states and 4457 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:33,236 INFO L93 Difference]: Finished difference Result 2974 states and 7844 transitions. [2022-01-18 02:02:33,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:02:33,236 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:33,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:33,244 INFO L225 Difference]: With dead ends: 2974 [2022-01-18 02:02:33,245 INFO L226 Difference]: Without dead ends: 2842 [2022-01-18 02:02:33,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2808 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1098, Invalid=8408, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 02:02:33,246 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 942 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 3864 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:33,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 3864 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:02:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2022-01-18 02:02:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1599. [2022-01-18 02:02:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 2.74468085106383) internal successors, (4386), 1598 states have internal predecessors, (4386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 4386 transitions. [2022-01-18 02:02:33,269 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 4386 transitions. Word has length 72 [2022-01-18 02:02:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:33,269 INFO L470 AbstractCegarLoop]: Abstraction has 1599 states and 4386 transitions. [2022-01-18 02:02:33,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 4386 transitions. [2022-01-18 02:02:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:33,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:33,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:33,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-01-18 02:02:33,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-01-18 02:02:33,486 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1117449257, now seen corresponding path program 45 times [2022-01-18 02:02:33,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:33,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076089712] [2022-01-18 02:02:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:33,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:33,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:33,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076089712] [2022-01-18 02:02:33,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076089712] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:33,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989176296] [2022-01-18 02:02:33,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:02:33,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:33,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:33,686 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:33,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 02:02:33,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:02:33,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:33,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:33,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:34,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:34,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989176296] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:34,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:34,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:34,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366778015] [2022-01-18 02:02:34,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:34,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:34,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:34,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:34,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:34,679 INFO L87 Difference]: Start difference. First operand 1599 states and 4386 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:36,871 INFO L93 Difference]: Finished difference Result 2965 states and 7805 transitions. [2022-01-18 02:02:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 02:02:36,871 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:36,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:36,875 INFO L225 Difference]: With dead ends: 2965 [2022-01-18 02:02:36,875 INFO L226 Difference]: Without dead ends: 2818 [2022-01-18 02:02:36,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3010 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=997, Invalid=9305, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 02:02:36,876 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 947 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:36,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 3429 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:02:36,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-01-18 02:02:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1615. [2022-01-18 02:02:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.7472118959107807) internal successors, (4434), 1614 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4434 transitions. [2022-01-18 02:02:36,897 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4434 transitions. Word has length 72 [2022-01-18 02:02:36,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:36,897 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4434 transitions. [2022-01-18 02:02:36,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4434 transitions. [2022-01-18 02:02:36,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:36,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:36,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:36,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:37,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:37,111 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:37,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1557945783, now seen corresponding path program 46 times [2022-01-18 02:02:37,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:37,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450577734] [2022-01-18 02:02:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:37,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:37,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:37,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450577734] [2022-01-18 02:02:37,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450577734] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:37,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842763166] [2022-01-18 02:02:37,333 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:02:37,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:37,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:37,334 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:37,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 02:02:37,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:02:37,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:37,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:37,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:37,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:38,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842763166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:38,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:38,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:38,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635051559] [2022-01-18 02:02:38,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:38,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:38,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:38,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:38,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:38,417 INFO L87 Difference]: Start difference. First operand 1615 states and 4434 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:41,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:41,447 INFO L93 Difference]: Finished difference Result 3317 states and 8697 transitions. [2022-01-18 02:02:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 02:02:41,447 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:41,454 INFO L225 Difference]: With dead ends: 3317 [2022-01-18 02:02:41,454 INFO L226 Difference]: Without dead ends: 3170 [2022-01-18 02:02:41,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3783 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1338, Invalid=11094, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 02:02:41,456 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1144 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:41,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 4600 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:02:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-01-18 02:02:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 1615. [2022-01-18 02:02:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.7496902106567536) internal successors, (4438), 1614 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4438 transitions. [2022-01-18 02:02:41,485 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4438 transitions. Word has length 72 [2022-01-18 02:02:41,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:41,485 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4438 transitions. [2022-01-18 02:02:41,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:41,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4438 transitions. [2022-01-18 02:02:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:41,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:41,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:41,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:41,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:41,694 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash 531059937, now seen corresponding path program 47 times [2022-01-18 02:02:41,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:41,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66842250] [2022-01-18 02:02:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:41,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:41,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:41,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66842250] [2022-01-18 02:02:41,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66842250] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:41,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489937120] [2022-01-18 02:02:41,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:02:41,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:41,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:41,932 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:41,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 02:02:42,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:02:42,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:42,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:42,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:42,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:42,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489937120] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:42,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:42,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:42,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838422748] [2022-01-18 02:02:42,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:42,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:42,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:42,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:42,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1257, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:42,950 INFO L87 Difference]: Start difference. First operand 1615 states and 4438 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:45,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:45,274 INFO L93 Difference]: Finished difference Result 2970 states and 7818 transitions. [2022-01-18 02:02:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 02:02:45,274 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:45,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:45,278 INFO L225 Difference]: With dead ends: 2970 [2022-01-18 02:02:45,278 INFO L226 Difference]: Without dead ends: 2868 [2022-01-18 02:02:45,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1064, Invalid=8248, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 02:02:45,279 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1003 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:45,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 3366 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:02:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-18 02:02:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1591. [2022-01-18 02:02:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 2.7446540880503143) internal successors, (4364), 1590 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 4364 transitions. [2022-01-18 02:02:45,300 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 4364 transitions. Word has length 72 [2022-01-18 02:02:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:45,300 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 4364 transitions. [2022-01-18 02:02:45,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 4364 transitions. [2022-01-18 02:02:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:45,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:45,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:45,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:45,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-01-18 02:02:45,520 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2026002579, now seen corresponding path program 48 times [2022-01-18 02:02:45,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:45,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101770002] [2022-01-18 02:02:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:45,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:45,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:45,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101770002] [2022-01-18 02:02:45,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101770002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:45,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584878350] [2022-01-18 02:02:45,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:02:45,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:45,691 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:45,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 02:02:45,779 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:02:45,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:45,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:45,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:46,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:46,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584878350] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:46,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:46,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:46,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856749354] [2022-01-18 02:02:46,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:46,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:46,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:46,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:46,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:46,402 INFO L87 Difference]: Start difference. First operand 1591 states and 4364 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:49,163 INFO L93 Difference]: Finished difference Result 3141 states and 8276 transitions. [2022-01-18 02:02:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 02:02:49,163 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:49,167 INFO L225 Difference]: With dead ends: 3141 [2022-01-18 02:02:49,167 INFO L226 Difference]: Without dead ends: 2979 [2022-01-18 02:02:49,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3942 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1292, Invalid=11364, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 02:02:49,168 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1152 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:49,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3745 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:02:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-01-18 02:02:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1615. [2022-01-18 02:02:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.7496902106567536) internal successors, (4438), 1614 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4438 transitions. [2022-01-18 02:02:49,189 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4438 transitions. Word has length 72 [2022-01-18 02:02:49,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:49,189 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4438 transitions. [2022-01-18 02:02:49,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:49,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4438 transitions. [2022-01-18 02:02:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:49,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:49,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:49,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:49,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:49,406 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:49,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash 649392461, now seen corresponding path program 49 times [2022-01-18 02:02:49,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:49,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640213788] [2022-01-18 02:02:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:49,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:49,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:49,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640213788] [2022-01-18 02:02:49,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640213788] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:49,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462820781] [2022-01-18 02:02:49,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:02:49,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:49,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:49,620 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:49,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 02:02:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:49,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:49,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:50,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:50,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462820781] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:50,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:50,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:50,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728312163] [2022-01-18 02:02:50,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:50,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:50,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:50,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:50,716 INFO L87 Difference]: Start difference. First operand 1615 states and 4438 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:54,096 INFO L93 Difference]: Finished difference Result 3402 states and 8932 transitions. [2022-01-18 02:02:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 02:02:54,097 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:54,102 INFO L225 Difference]: With dead ends: 3402 [2022-01-18 02:02:54,102 INFO L226 Difference]: Without dead ends: 3270 [2022-01-18 02:02:54,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5169 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1734, Invalid=14016, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 02:02:54,103 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1111 mSDsluCounter, 4748 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:54,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 4748 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:02:54,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-01-18 02:02:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 1615. [2022-01-18 02:02:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.752168525402726) internal successors, (4442), 1614 states have internal predecessors, (4442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4442 transitions. [2022-01-18 02:02:54,129 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4442 transitions. Word has length 72 [2022-01-18 02:02:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:54,129 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4442 transitions. [2022-01-18 02:02:54,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4442 transitions. [2022-01-18 02:02:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:54,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:54,131 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] [2022-01-18 02:02:54,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:54,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:54,344 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash -377493385, now seen corresponding path program 50 times [2022-01-18 02:02:54,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:54,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545553273] [2022-01-18 02:02:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:54,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:54,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:54,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545553273] [2022-01-18 02:02:54,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545553273] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:54,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095798049] [2022-01-18 02:02:54,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:02:54,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:54,551 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:54,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 02:02:54,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:02:54,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:54,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:54,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:55,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:55,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095798049] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:55,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:55,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:55,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711869506] [2022-01-18 02:02:55,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:55,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:55,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:55,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:55,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:55,550 INFO L87 Difference]: Start difference. First operand 1615 states and 4442 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:02:57,709 INFO L93 Difference]: Finished difference Result 2948 states and 7773 transitions. [2022-01-18 02:02:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:02:57,710 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:02:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:02:57,715 INFO L225 Difference]: With dead ends: 2948 [2022-01-18 02:02:57,715 INFO L226 Difference]: Without dead ends: 2846 [2022-01-18 02:02:57,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2575 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1111, Invalid=7819, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 02:02:57,716 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 960 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:02:57,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 3907 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:02:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-01-18 02:02:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1583. [2022-01-18 02:02:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 2.7446270543615676) internal successors, (4342), 1582 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 4342 transitions. [2022-01-18 02:02:57,746 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 4342 transitions. Word has length 72 [2022-01-18 02:02:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:02:57,746 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 4342 transitions. [2022-01-18 02:02:57,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:02:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 4342 transitions. [2022-01-18 02:02:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:02:57,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:02:57,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:02:57,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 02:02:57,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:57,963 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:02:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:02:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1577988827, now seen corresponding path program 51 times [2022-01-18 02:02:57,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:02:57,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331341880] [2022-01-18 02:02:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:02:57,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:02:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:02:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:58,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:02:58,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331341880] [2022-01-18 02:02:58,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331341880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:02:58,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971273802] [2022-01-18 02:02:58,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:02:58,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:02:58,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:02:58,172 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:02:58,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 02:02:58,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:02:58,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:02:58,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:02:58,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:02:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:58,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:02:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:02:59,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971273802] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:02:59,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:02:59,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:02:59,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346748969] [2022-01-18 02:02:59,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:02:59,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:02:59,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:02:59,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:02:59,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:02:59,210 INFO L87 Difference]: Start difference. First operand 1583 states and 4342 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:02,483 INFO L93 Difference]: Finished difference Result 3443 states and 9061 transitions. [2022-01-18 02:03:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 02:03:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:02,489 INFO L225 Difference]: With dead ends: 3443 [2022-01-18 02:03:02,489 INFO L226 Difference]: Without dead ends: 3281 [2022-01-18 02:03:02,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5412 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1591, Invalid=14411, Unknown=0, NotChecked=0, Total=16002 [2022-01-18 02:03:02,491 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1305 mSDsluCounter, 3689 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:02,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 3729 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:03:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-18 02:03:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1619. [2022-01-18 02:03:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 2.754635352286774) internal successors, (4457), 1618 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4457 transitions. [2022-01-18 02:03:02,519 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4457 transitions. Word has length 72 [2022-01-18 02:03:02,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:02,519 INFO L470 AbstractCegarLoop]: Abstraction has 1619 states and 4457 transitions. [2022-01-18 02:03:02,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:02,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4457 transitions. [2022-01-18 02:03:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:02,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:02,522 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] [2022-01-18 02:03:02,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 02:03:02,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-01-18 02:03:02,724 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:02,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:02,725 INFO L85 PathProgramCache]: Analyzing trace with hash -41583429, now seen corresponding path program 52 times [2022-01-18 02:03:02,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:02,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701023748] [2022-01-18 02:03:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:02,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:02,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:02,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701023748] [2022-01-18 02:03:02,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701023748] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:02,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169256464] [2022-01-18 02:03:02,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:03:02,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:02,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:02,979 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:03,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 02:03:03,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:03:03,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:03,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:03:03,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:03,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:04,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169256464] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:04,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:04,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:03:04,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144983382] [2022-01-18 02:03:04,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:04,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:03:04,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:03:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:03:04,068 INFO L87 Difference]: Start difference. First operand 1619 states and 4457 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:07,934 INFO L93 Difference]: Finished difference Result 3890 states and 10167 transitions. [2022-01-18 02:03:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 02:03:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:07,940 INFO L225 Difference]: With dead ends: 3890 [2022-01-18 02:03:07,940 INFO L226 Difference]: Without dead ends: 3758 [2022-01-18 02:03:07,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6984 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2142, Invalid=17598, Unknown=0, NotChecked=0, Total=19740 [2022-01-18 02:03:07,942 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1510 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:07,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 4214 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:03:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-01-18 02:03:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 1619. [2022-01-18 02:03:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 2.7571075401730534) internal successors, (4461), 1618 states have internal predecessors, (4461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4461 transitions. [2022-01-18 02:03:07,976 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4461 transitions. Word has length 72 [2022-01-18 02:03:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:07,976 INFO L470 AbstractCegarLoop]: Abstraction has 1619 states and 4461 transitions. [2022-01-18 02:03:07,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4461 transitions. [2022-01-18 02:03:07,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:07,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:07,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:03:08,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 02:03:08,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-01-18 02:03:08,195 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:08,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1068469275, now seen corresponding path program 53 times [2022-01-18 02:03:08,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:08,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682067343] [2022-01-18 02:03:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:08,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:08,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:08,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682067343] [2022-01-18 02:03:08,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682067343] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:08,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098213859] [2022-01-18 02:03:08,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:03:08,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:08,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:08,423 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:08,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 02:03:08,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:03:08,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:08,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:03:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:08,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:09,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098213859] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:09,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:09,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:03:09,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151736048] [2022-01-18 02:03:09,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:09,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:03:09,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:03:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:03:09,249 INFO L87 Difference]: Start difference. First operand 1619 states and 4461 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:11,553 INFO L93 Difference]: Finished difference Result 3596 states and 9476 transitions. [2022-01-18 02:03:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 02:03:11,553 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:11,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:11,558 INFO L225 Difference]: With dead ends: 3596 [2022-01-18 02:03:11,558 INFO L226 Difference]: Without dead ends: 3494 [2022-01-18 02:03:11,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3595 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1438, Invalid=9904, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 02:03:11,560 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1213 mSDsluCounter, 3619 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:11,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 3629 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:03:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2022-01-18 02:03:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 1587. [2022-01-18 02:03:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1586 states have (on average 2.7471626733921815) internal successors, (4357), 1586 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 4357 transitions. [2022-01-18 02:03:11,585 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 4357 transitions. Word has length 72 [2022-01-18 02:03:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:11,585 INFO L470 AbstractCegarLoop]: Abstraction has 1587 states and 4357 transitions. [2022-01-18 02:03:11,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 4357 transitions. [2022-01-18 02:03:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:11,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:11,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:03:11,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 02:03:11,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-01-18 02:03:11,804 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:11,804 INFO L85 PathProgramCache]: Analyzing trace with hash 42818903, now seen corresponding path program 54 times [2022-01-18 02:03:11,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:11,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729427547] [2022-01-18 02:03:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:11,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:11,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:11,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729427547] [2022-01-18 02:03:11,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729427547] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:11,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322071670] [2022-01-18 02:03:11,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:03:11,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:11,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:11,988 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:11,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 02:03:12,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:03:12,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:12,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:03:12,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:12,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:12,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322071670] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:12,849 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:12,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:03:12,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34106784] [2022-01-18 02:03:12,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:12,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:03:12,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:03:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:03:12,850 INFO L87 Difference]: Start difference. First operand 1587 states and 4357 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:13,686 INFO L93 Difference]: Finished difference Result 2399 states and 6403 transitions. [2022-01-18 02:03:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:03:13,686 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:13,693 INFO L225 Difference]: With dead ends: 2399 [2022-01-18 02:03:13,693 INFO L226 Difference]: Without dead ends: 2273 [2022-01-18 02:03:13,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=765, Invalid=4347, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 02:03:13,694 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 666 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:13,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 3324 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:03:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2022-01-18 02:03:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1587. [2022-01-18 02:03:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1586 states have (on average 2.7471626733921815) internal successors, (4357), 1586 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 4357 transitions. [2022-01-18 02:03:13,722 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 4357 transitions. Word has length 72 [2022-01-18 02:03:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:13,722 INFO L470 AbstractCegarLoop]: Abstraction has 1587 states and 4357 transitions. [2022-01-18 02:03:13,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 4357 transitions. [2022-01-18 02:03:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:13,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:13,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:03:13,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-01-18 02:03:13,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-01-18 02:03:13,937 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 603378837, now seen corresponding path program 29 times [2022-01-18 02:03:13,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:13,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100047179] [2022-01-18 02:03:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:13,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:14,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:14,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100047179] [2022-01-18 02:03:14,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100047179] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:14,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219806876] [2022-01-18 02:03:14,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:03:14,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:14,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:14,213 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:14,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 02:03:14,302 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:03:14,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:14,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:03:14,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:14,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:15,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219806876] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:15,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:15,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 02:03:15,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354204370] [2022-01-18 02:03:15,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:15,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 02:03:15,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:15,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 02:03:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:03:15,483 INFO L87 Difference]: Start difference. First operand 1587 states and 4357 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:21,820 INFO L93 Difference]: Finished difference Result 4209 states and 10994 transitions. [2022-01-18 02:03:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 02:03:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:21,825 INFO L225 Difference]: With dead ends: 4209 [2022-01-18 02:03:21,825 INFO L226 Difference]: Without dead ends: 4107 [2022-01-18 02:03:21,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10355 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2875, Invalid=26537, Unknown=0, NotChecked=0, Total=29412 [2022-01-18 02:03:21,827 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1398 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 5606 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:21,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 5606 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:03:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2022-01-18 02:03:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 1603. [2022-01-18 02:03:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.762172284644195) internal successors, (4425), 1602 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4425 transitions. [2022-01-18 02:03:21,853 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4425 transitions. Word has length 72 [2022-01-18 02:03:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:21,853 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4425 transitions. [2022-01-18 02:03:21,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:21,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4425 transitions. [2022-01-18 02:03:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:21,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:21,855 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] [2022-01-18 02:03:21,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 02:03:22,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:22,070 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:22,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:22,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1829604417, now seen corresponding path program 55 times [2022-01-18 02:03:22,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:22,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550335397] [2022-01-18 02:03:22,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:22,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:22,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:22,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550335397] [2022-01-18 02:03:22,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550335397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:22,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919571915] [2022-01-18 02:03:22,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:03:22,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:22,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:22,262 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:22,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 02:03:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:22,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:03:22,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:22,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:23,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919571915] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:23,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:23,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:03:23,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743419334] [2022-01-18 02:03:23,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:23,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:03:23,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:03:23,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:03:23,257 INFO L87 Difference]: Start difference. First operand 1603 states and 4425 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:26,000 INFO L93 Difference]: Finished difference Result 3310 states and 8642 transitions. [2022-01-18 02:03:26,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 02:03:26,000 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:26,005 INFO L225 Difference]: With dead ends: 3310 [2022-01-18 02:03:26,005 INFO L226 Difference]: Without dead ends: 3133 [2022-01-18 02:03:26,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3598 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1230, Invalid=10326, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 02:03:26,006 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1105 mSDsluCounter, 4404 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:26,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 4361 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:03:26,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2022-01-18 02:03:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 1631. [2022-01-18 02:03:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 2.78159509202454) internal successors, (4534), 1630 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 4534 transitions. [2022-01-18 02:03:26,028 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 4534 transitions. Word has length 72 [2022-01-18 02:03:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:26,028 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 4534 transitions. [2022-01-18 02:03:26,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 4534 transitions. [2022-01-18 02:03:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:26,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:26,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:03:26,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 02:03:26,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:26,235 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1366429335, now seen corresponding path program 56 times [2022-01-18 02:03:26,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:26,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437712445] [2022-01-18 02:03:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:26,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:26,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:26,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437712445] [2022-01-18 02:03:26,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437712445] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:26,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74047252] [2022-01-18 02:03:26,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:03:26,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:26,423 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:26,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 02:03:26,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:03:26,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:26,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:03:26,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:26,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:27,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74047252] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:27,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:27,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:03:27,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94964539] [2022-01-18 02:03:27,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:27,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:03:27,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:03:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:03:27,245 INFO L87 Difference]: Start difference. First operand 1631 states and 4534 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:31,378 INFO L93 Difference]: Finished difference Result 4000 states and 10489 transitions. [2022-01-18 02:03:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-18 02:03:31,378 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:31,385 INFO L225 Difference]: With dead ends: 4000 [2022-01-18 02:03:31,385 INFO L226 Difference]: Without dead ends: 3838 [2022-01-18 02:03:31,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8293 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2280, Invalid=20370, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 02:03:31,388 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1628 mSDsluCounter, 4785 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:31,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 4753 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:03:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2022-01-18 02:03:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 1643. [2022-01-18 02:03:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 2.78136419001218) internal successors, (4567), 1642 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 4567 transitions. [2022-01-18 02:03:31,424 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 4567 transitions. Word has length 72 [2022-01-18 02:03:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:31,424 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 4567 transitions. [2022-01-18 02:03:31,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 4567 transitions. [2022-01-18 02:03:31,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:31,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:31,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:03:31,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-01-18 02:03:31,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:31,664 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 282079859, now seen corresponding path program 57 times [2022-01-18 02:03:31,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932409223] [2022-01-18 02:03:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:31,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:31,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932409223] [2022-01-18 02:03:31,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932409223] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384501438] [2022-01-18 02:03:31,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:03:31,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:31,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:31,921 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:31,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 02:03:32,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:03:32,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:32,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:03:32,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:32,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:32,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384501438] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:32,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:32,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:03:32,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929105364] [2022-01-18 02:03:32,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:32,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:03:32,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:32,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:03:32,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:03:32,841 INFO L87 Difference]: Start difference. First operand 1643 states and 4567 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:35,711 INFO L93 Difference]: Finished difference Result 3539 states and 9216 transitions. [2022-01-18 02:03:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 02:03:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:35,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:35,716 INFO L225 Difference]: With dead ends: 3539 [2022-01-18 02:03:35,716 INFO L226 Difference]: Without dead ends: 3437 [2022-01-18 02:03:35,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4613 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1705, Invalid=12337, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 02:03:35,717 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1744 mSDsluCounter, 4214 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 4174 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:35,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 4174 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:03:35,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2022-01-18 02:03:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 1631. [2022-01-18 02:03:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 2.78159509202454) internal successors, (4534), 1630 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 4534 transitions. [2022-01-18 02:03:35,747 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 4534 transitions. Word has length 72 [2022-01-18 02:03:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:35,748 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 4534 transitions. [2022-01-18 02:03:35,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 4534 transitions. [2022-01-18 02:03:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:35,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:35,751 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] [2022-01-18 02:03:35,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 02:03:35,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:35,954 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -391793397, now seen corresponding path program 58 times [2022-01-18 02:03:35,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:35,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713517004] [2022-01-18 02:03:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:35,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:36,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713517004] [2022-01-18 02:03:36,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713517004] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969402247] [2022-01-18 02:03:36,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:03:36,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:36,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:36,136 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:36,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 02:03:36,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:03:36,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:36,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:03:36,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:36,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:37,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969402247] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:37,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:37,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:03:37,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294126821] [2022-01-18 02:03:37,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:37,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:03:37,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:03:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:03:37,060 INFO L87 Difference]: Start difference. First operand 1631 states and 4534 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:41,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:41,830 INFO L93 Difference]: Finished difference Result 4142 states and 10879 transitions. [2022-01-18 02:03:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-18 02:03:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:41,836 INFO L225 Difference]: With dead ends: 4142 [2022-01-18 02:03:41,836 INFO L226 Difference]: Without dead ends: 4025 [2022-01-18 02:03:41,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9870 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2936, Invalid=23146, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 02:03:41,838 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1967 mSDsluCounter, 3987 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:41,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 3973 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:03:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2022-01-18 02:03:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 1603. [2022-01-18 02:03:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.774656679151061) internal successors, (4445), 1602 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4445 transitions. [2022-01-18 02:03:41,865 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4445 transitions. Word has length 72 [2022-01-18 02:03:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:41,865 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4445 transitions. [2022-01-18 02:03:41,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4445 transitions. [2022-01-18 02:03:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:41,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:41,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:03:41,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-01-18 02:03:42,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:42,083 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash -357922065, now seen corresponding path program 59 times [2022-01-18 02:03:42,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:42,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935261401] [2022-01-18 02:03:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:42,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:42,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:42,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935261401] [2022-01-18 02:03:42,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935261401] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:42,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997355782] [2022-01-18 02:03:42,287 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:03:42,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:42,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:42,288 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:42,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 02:03:42,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:03:42,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:42,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:03:42,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:42,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:43,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997355782] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:43,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:43,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:03:43,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214161792] [2022-01-18 02:03:43,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:43,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:03:43,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:43,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:03:43,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:03:43,122 INFO L87 Difference]: Start difference. First operand 1603 states and 4445 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:44,213 INFO L93 Difference]: Finished difference Result 2416 states and 6464 transitions. [2022-01-18 02:03:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:03:44,214 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:44,217 INFO L225 Difference]: With dead ends: 2416 [2022-01-18 02:03:44,217 INFO L226 Difference]: Without dead ends: 2275 [2022-01-18 02:03:44,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=857, Invalid=5305, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:03:44,218 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 826 mSDsluCounter, 3790 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 3772 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:44,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 3772 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:03:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2022-01-18 02:03:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 1603. [2022-01-18 02:03:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.772159800249688) internal successors, (4441), 1602 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4441 transitions. [2022-01-18 02:03:44,241 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4441 transitions. Word has length 72 [2022-01-18 02:03:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:44,241 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4441 transitions. [2022-01-18 02:03:44,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4441 transitions. [2022-01-18 02:03:44,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:44,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:44,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:03:44,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 02:03:44,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2022-01-18 02:03:44,447 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2099081347, now seen corresponding path program 30 times [2022-01-18 02:03:44,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:44,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788383370] [2022-01-18 02:03:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:44,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:44,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:44,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788383370] [2022-01-18 02:03:44,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788383370] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:44,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433753183] [2022-01-18 02:03:44,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:03:44,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:44,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:44,625 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:44,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 02:03:44,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:03:44,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:03:44,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:03:44,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:45,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:46,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433753183] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:46,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:46,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:03:46,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303787995] [2022-01-18 02:03:46,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:46,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:03:46,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:03:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:03:46,037 INFO L87 Difference]: Start difference. First operand 1603 states and 4441 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:03:52,585 INFO L93 Difference]: Finished difference Result 4237 states and 11064 transitions. [2022-01-18 02:03:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 02:03:52,586 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:03:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:03:52,591 INFO L225 Difference]: With dead ends: 4237 [2022-01-18 02:03:52,591 INFO L226 Difference]: Without dead ends: 4135 [2022-01-18 02:03:52,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12006 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3347, Invalid=29959, Unknown=0, NotChecked=0, Total=33306 [2022-01-18 02:03:52,592 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 1392 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 6133 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:03:52,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 6133 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:03:52,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2022-01-18 02:03:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 1611. [2022-01-18 02:03:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1610 states have (on average 2.7770186335403726) internal successors, (4471), 1610 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 4471 transitions. [2022-01-18 02:03:52,618 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 4471 transitions. Word has length 72 [2022-01-18 02:03:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:03:52,619 INFO L470 AbstractCegarLoop]: Abstraction has 1611 states and 4471 transitions. [2022-01-18 02:03:52,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:03:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 4471 transitions. [2022-01-18 02:03:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:03:52,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:03:52,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:03:52,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-01-18 02:03:52,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-01-18 02:03:52,852 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:03:52,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:03:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1118703179, now seen corresponding path program 31 times [2022-01-18 02:03:52,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:03:52,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158202305] [2022-01-18 02:03:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:03:52,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:03:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:53,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:03:53,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158202305] [2022-01-18 02:03:53,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158202305] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:03:53,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736256565] [2022-01-18 02:03:53,015 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:03:53,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:03:53,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:03:53,016 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:03:53,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 02:03:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:03:53,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:03:53,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:03:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:53,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:03:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:03:54,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736256565] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:03:54,138 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:03:54,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:03:54,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884212359] [2022-01-18 02:03:54,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:03:54,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:03:54,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:03:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:03:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:03:54,139 INFO L87 Difference]: Start difference. First operand 1611 states and 4471 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:04:02,780 INFO L93 Difference]: Finished difference Result 5720 states and 15021 transitions. [2022-01-18 02:04:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-01-18 02:04:02,780 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:04:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:04:02,787 INFO L225 Difference]: With dead ends: 5720 [2022-01-18 02:04:02,787 INFO L226 Difference]: Without dead ends: 5618 [2022-01-18 02:04:02,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20591 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=5488, Invalid=47182, Unknown=0, NotChecked=0, Total=52670 [2022-01-18 02:04:02,790 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1739 mSDsluCounter, 6889 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 6947 SdHoareTripleChecker+Invalid, 4064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:04:02,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 6947 Invalid, 4064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:04:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2022-01-18 02:04:02,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 1635. [2022-01-18 02:04:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 2.7937576499388004) internal successors, (4565), 1634 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 4565 transitions. [2022-01-18 02:04:02,819 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 4565 transitions. Word has length 72 [2022-01-18 02:04:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:04:02,819 INFO L470 AbstractCegarLoop]: Abstraction has 1635 states and 4565 transitions. [2022-01-18 02:04:02,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 4565 transitions. [2022-01-18 02:04:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:04:02,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:04:02,821 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:04:02,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 02:04:03,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:03,031 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:04:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:04:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash -52582137, now seen corresponding path program 32 times [2022-01-18 02:04:03,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:04:03,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275518741] [2022-01-18 02:04:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:04:03,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:04:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:04:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:03,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:04:03,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275518741] [2022-01-18 02:04:03,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275518741] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:04:03,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385060070] [2022-01-18 02:04:03,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:04:03,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:04:03,233 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:04:03,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 02:04:03,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:04:03,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:04:03,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:04:03,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:04:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:03,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:04:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:04,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385060070] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:04:04,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:04:04,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:04:04,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501320911] [2022-01-18 02:04:04,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:04:04,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:04:04,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:04:04,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:04:04,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1885, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:04:04,566 INFO L87 Difference]: Start difference. First operand 1635 states and 4565 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:04:14,652 INFO L93 Difference]: Finished difference Result 6525 states and 17134 transitions. [2022-01-18 02:04:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 02:04:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:04:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:04:14,661 INFO L225 Difference]: With dead ends: 6525 [2022-01-18 02:04:14,661 INFO L226 Difference]: Without dead ends: 6423 [2022-01-18 02:04:14,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24868 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=7184, Invalid=56068, Unknown=0, NotChecked=0, Total=63252 [2022-01-18 02:04:14,665 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1587 mSDsluCounter, 11115 mSDsCounter, 0 mSdLazyCounter, 5582 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 10999 SdHoareTripleChecker+Invalid, 5840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 5582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:04:14,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 10999 Invalid, 5840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 5582 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:04:14,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2022-01-18 02:04:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 1639. [2022-01-18 02:04:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 2.796092796092796) internal successors, (4580), 1638 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 4580 transitions. [2022-01-18 02:04:14,702 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 4580 transitions. Word has length 72 [2022-01-18 02:04:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:04:14,702 INFO L470 AbstractCegarLoop]: Abstraction has 1639 states and 4580 transitions. [2022-01-18 02:04:14,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 4580 transitions. [2022-01-18 02:04:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:04:14,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:04:14,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:04:14,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-01-18 02:04:14,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:14,920 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:04:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:04:14,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1087588397, now seen corresponding path program 33 times [2022-01-18 02:04:14,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:04:14,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563564813] [2022-01-18 02:04:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:04:14,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:04:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:04:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:15,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:04:15,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563564813] [2022-01-18 02:04:15,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563564813] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:04:15,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453501236] [2022-01-18 02:04:15,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:04:15,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:15,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:04:15,093 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:04:15,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 02:04:15,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:04:15,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:04:15,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:04:15,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:04:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:15,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:04:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:16,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453501236] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:04:16,162 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:04:16,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:04:16,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257552970] [2022-01-18 02:04:16,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:04:16,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:04:16,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:04:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:04:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:04:16,163 INFO L87 Difference]: Start difference. First operand 1639 states and 4580 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:30,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:04:30,472 INFO L93 Difference]: Finished difference Result 6738 states and 17549 transitions. [2022-01-18 02:04:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-01-18 02:04:30,472 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:04:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:04:30,481 INFO L225 Difference]: With dead ends: 6738 [2022-01-18 02:04:30,481 INFO L226 Difference]: Without dead ends: 6636 [2022-01-18 02:04:30,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38375 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=9745, Invalid=82975, Unknown=0, NotChecked=0, Total=92720 [2022-01-18 02:04:30,485 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 2268 mSDsluCounter, 9175 mSDsCounter, 0 mSdLazyCounter, 5457 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 9121 SdHoareTripleChecker+Invalid, 5791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 5457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:04:30,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2268 Valid, 9121 Invalid, 5791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 5457 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 02:04:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2022-01-18 02:04:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 1619. [2022-01-18 02:04:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 2.7818294190358466) internal successors, (4501), 1618 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4501 transitions. [2022-01-18 02:04:30,529 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4501 transitions. Word has length 72 [2022-01-18 02:04:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:04:30,530 INFO L470 AbstractCegarLoop]: Abstraction has 1619 states and 4501 transitions. [2022-01-18 02:04:30,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4501 transitions. [2022-01-18 02:04:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:04:30,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:04:30,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:04:30,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 02:04:30,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:30,755 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:04:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:04:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash 780707329, now seen corresponding path program 34 times [2022-01-18 02:04:30,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:04:30,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858012473] [2022-01-18 02:04:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:04:30,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:04:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:04:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:30,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:04:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858012473] [2022-01-18 02:04:30,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858012473] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:04:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772312791] [2022-01-18 02:04:30,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:04:30,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:30,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:04:30,984 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:04:30,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 02:04:31,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:04:31,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:04:31,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:04:31,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:04:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:31,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:04:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:32,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772312791] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:04:32,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:04:32,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:04:32,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285674093] [2022-01-18 02:04:32,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:04:32,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:04:32,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:04:32,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:04:32,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:04:32,486 INFO L87 Difference]: Start difference. First operand 1619 states and 4501 transitions. Second operand has 46 states, 46 states have (on average 3.1956521739130435) internal successors, (147), 46 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:44,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:04:44,890 INFO L93 Difference]: Finished difference Result 6698 states and 17536 transitions. [2022-01-18 02:04:44,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-01-18 02:04:44,890 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1956521739130435) internal successors, (147), 46 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:04:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:04:44,899 INFO L225 Difference]: With dead ends: 6698 [2022-01-18 02:04:44,899 INFO L226 Difference]: Without dead ends: 6596 [2022-01-18 02:04:44,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27045 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=8345, Invalid=58995, Unknown=0, NotChecked=0, Total=67340 [2022-01-18 02:04:44,902 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 2167 mSDsluCounter, 7590 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:04:44,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2167 Valid, 7476 Invalid, 4780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 4393 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 02:04:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6596 states. [2022-01-18 02:04:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6596 to 1635. [2022-01-18 02:04:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 2.7937576499388004) internal successors, (4565), 1634 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 4565 transitions. [2022-01-18 02:04:44,937 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 4565 transitions. Word has length 72 [2022-01-18 02:04:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:04:44,938 INFO L470 AbstractCegarLoop]: Abstraction has 1635 states and 4565 transitions. [2022-01-18 02:04:44,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1956521739130435) internal successors, (147), 46 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 4565 transitions. [2022-01-18 02:04:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:04:44,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:04:44,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:04:44,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-18 02:04:45,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:45,155 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:04:45,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:04:45,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1292297647, now seen corresponding path program 35 times [2022-01-18 02:04:45,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:04:45,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394020180] [2022-01-18 02:04:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:04:45,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:04:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:04:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:45,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:04:45,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394020180] [2022-01-18 02:04:45,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394020180] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:04:45,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925906798] [2022-01-18 02:04:45,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:04:45,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:45,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:04:45,295 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:04:45,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 02:04:45,398 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:04:45,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:04:45,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:04:45,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:04:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:45,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:04:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:46,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925906798] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:04:46,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:04:46,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:04:46,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6134401] [2022-01-18 02:04:46,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:04:46,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:04:46,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:04:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:04:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:04:46,515 INFO L87 Difference]: Start difference. First operand 1635 states and 4565 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:04:50,661 INFO L93 Difference]: Finished difference Result 3942 states and 10486 transitions. [2022-01-18 02:04:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-18 02:04:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:04:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:04:50,667 INFO L225 Difference]: With dead ends: 3942 [2022-01-18 02:04:50,667 INFO L226 Difference]: Without dead ends: 3840 [2022-01-18 02:04:50,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7926 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2499, Invalid=20151, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 02:04:50,669 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 1681 mSDsluCounter, 5310 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 5308 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:04:50,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 5308 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:04:50,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3840 states. [2022-01-18 02:04:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3840 to 1663. [2022-01-18 02:04:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 2.8008423586040916) internal successors, (4655), 1662 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 4655 transitions. [2022-01-18 02:04:50,695 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 4655 transitions. Word has length 72 [2022-01-18 02:04:50,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:04:50,695 INFO L470 AbstractCegarLoop]: Abstraction has 1663 states and 4655 transitions. [2022-01-18 02:04:50,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 4655 transitions. [2022-01-18 02:04:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:04:50,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:04:50,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:04:50,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 02:04:50,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-01-18 02:04:50,901 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:04:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:04:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2041368747, now seen corresponding path program 60 times [2022-01-18 02:04:50,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:04:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415885387] [2022-01-18 02:04:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:04:50,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:04:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:04:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:51,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:04:51,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415885387] [2022-01-18 02:04:51,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415885387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:04:51,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032105240] [2022-01-18 02:04:51,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:04:51,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:51,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:04:51,054 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:04:51,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 02:04:51,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:04:51,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:04:51,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:04:51,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:04:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:51,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:04:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:51,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032105240] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:04:51,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:04:51,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:04:51,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387841477] [2022-01-18 02:04:51,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:04:51,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:04:51,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:04:51,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:04:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:04:51,718 INFO L87 Difference]: Start difference. First operand 1663 states and 4655 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:04:54,265 INFO L93 Difference]: Finished difference Result 3521 states and 9074 transitions. [2022-01-18 02:04:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 02:04:54,266 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:04:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:04:54,270 INFO L225 Difference]: With dead ends: 3521 [2022-01-18 02:04:54,270 INFO L226 Difference]: Without dead ends: 3329 [2022-01-18 02:04:54,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3812 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1366, Invalid=10844, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 02:04:54,271 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 1378 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:04:54,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 4300 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:04:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2022-01-18 02:04:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 1709. [2022-01-18 02:04:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 2.8079625292740045) internal successors, (4796), 1708 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 4796 transitions. [2022-01-18 02:04:54,302 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 4796 transitions. Word has length 72 [2022-01-18 02:04:54,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:04:54,302 INFO L470 AbstractCegarLoop]: Abstraction has 1709 states and 4796 transitions. [2022-01-18 02:04:54,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 4796 transitions. [2022-01-18 02:04:54,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:04:54,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:04:54,305 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:04:54,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-18 02:04:54,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-01-18 02:04:54,513 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:04:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:04:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 203404863, now seen corresponding path program 36 times [2022-01-18 02:04:54,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:04:54,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187940002] [2022-01-18 02:04:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:04:54,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:04:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:04:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:54,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:04:54,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187940002] [2022-01-18 02:04:54,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187940002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:04:54,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725840827] [2022-01-18 02:04:54,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:04:54,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:04:54,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:04:54,761 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:04:54,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 02:04:54,857 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:04:54,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:04:54,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:04:54,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:04:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:55,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:04:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:04:55,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725840827] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:04:55,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:04:55,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:04:55,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233729090] [2022-01-18 02:04:55,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:04:55,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:04:55,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:04:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:04:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1852, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:04:55,740 INFO L87 Difference]: Start difference. First operand 1709 states and 4796 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:04:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:04:59,969 INFO L93 Difference]: Finished difference Result 4500 states and 11794 transitions. [2022-01-18 02:04:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 02:04:59,969 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:04:59,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:04:59,976 INFO L225 Difference]: With dead ends: 4500 [2022-01-18 02:04:59,976 INFO L226 Difference]: Without dead ends: 4398 [2022-01-18 02:04:59,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9865 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2920, Invalid=24470, Unknown=0, NotChecked=0, Total=27390 [2022-01-18 02:04:59,979 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 1654 mSDsluCounter, 6482 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 6435 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:04:59,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 6435 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:04:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-01-18 02:05:00,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 1717. [2022-01-18 02:05:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 2.812354312354312) internal successors, (4826), 1716 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 4826 transitions. [2022-01-18 02:05:00,012 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 4826 transitions. Word has length 72 [2022-01-18 02:05:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:00,013 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 4826 transitions. [2022-01-18 02:05:00,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 4826 transitions. [2022-01-18 02:05:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:00,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:00,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:00,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:00,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 02:05:00,220 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1280587633, now seen corresponding path program 37 times [2022-01-18 02:05:00,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:00,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868371062] [2022-01-18 02:05:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:00,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:00,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868371062] [2022-01-18 02:05:00,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868371062] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37728395] [2022-01-18 02:05:00,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:05:00,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:00,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:00,494 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:00,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 02:05:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:00,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:05:00,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:00,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:01,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37728395] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:01,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:01,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 02:05:01,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436664817] [2022-01-18 02:05:01,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:01,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 02:05:01,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 02:05:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:05:01,395 INFO L87 Difference]: Start difference. First operand 1717 states and 4826 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:07,484 INFO L93 Difference]: Finished difference Result 6017 states and 15853 transitions. [2022-01-18 02:05:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-01-18 02:05:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:07,493 INFO L225 Difference]: With dead ends: 6017 [2022-01-18 02:05:07,493 INFO L226 Difference]: Without dead ends: 5885 [2022-01-18 02:05:07,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14764 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4197, Invalid=34809, Unknown=0, NotChecked=0, Total=39006 [2022-01-18 02:05:07,496 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 2433 mSDsluCounter, 7123 mSDsCounter, 0 mSdLazyCounter, 3533 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 7085 SdHoareTripleChecker+Invalid, 3789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:07,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2433 Valid, 7085 Invalid, 3789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3533 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:05:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2022-01-18 02:05:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 1821. [2022-01-18 02:05:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 2.841758241758242) internal successors, (5172), 1820 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 5172 transitions. [2022-01-18 02:05:07,552 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 5172 transitions. Word has length 72 [2022-01-18 02:05:07,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:07,552 INFO L470 AbstractCegarLoop]: Abstraction has 1821 states and 5172 transitions. [2022-01-18 02:05:07,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:07,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 5172 transitions. [2022-01-18 02:05:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:07,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:07,555 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:07,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:07,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 02:05:07,768 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:07,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1948258621, now seen corresponding path program 38 times [2022-01-18 02:05:07,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:07,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134911606] [2022-01-18 02:05:07,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:07,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:08,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:08,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134911606] [2022-01-18 02:05:08,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134911606] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:08,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533058798] [2022-01-18 02:05:08,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:05:08,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:08,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:08,033 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:08,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 02:05:08,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:05:08,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:05:08,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:05:08,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:08,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:09,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533058798] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:09,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:09,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 02:05:09,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597571469] [2022-01-18 02:05:09,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:09,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 02:05:09,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:09,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 02:05:09,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:05:09,354 INFO L87 Difference]: Start difference. First operand 1821 states and 5172 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:18,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:18,870 INFO L93 Difference]: Finished difference Result 6228 states and 16428 transitions. [2022-01-18 02:05:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2022-01-18 02:05:18,870 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:18,878 INFO L225 Difference]: With dead ends: 6228 [2022-01-18 02:05:18,878 INFO L226 Difference]: Without dead ends: 6126 [2022-01-18 02:05:18,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24008 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=6244, Invalid=54026, Unknown=0, NotChecked=0, Total=60270 [2022-01-18 02:05:18,880 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2281 mSDsluCounter, 7570 mSDsCounter, 0 mSdLazyCounter, 3985 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 7625 SdHoareTripleChecker+Invalid, 4227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 3985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:18,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2281 Valid, 7625 Invalid, 4227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 3985 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:05:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2022-01-18 02:05:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 1825. [2022-01-18 02:05:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 2.84375) internal successors, (5187), 1824 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 5187 transitions. [2022-01-18 02:05:18,915 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 5187 transitions. Word has length 72 [2022-01-18 02:05:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:18,915 INFO L470 AbstractCegarLoop]: Abstraction has 1825 states and 5187 transitions. [2022-01-18 02:05:18,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 5187 transitions. [2022-01-18 02:05:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:18,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:18,917 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:18,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:19,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-01-18 02:05:19,132 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1311702415, now seen corresponding path program 39 times [2022-01-18 02:05:19,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:19,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262218074] [2022-01-18 02:05:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:19,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:19,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:19,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262218074] [2022-01-18 02:05:19,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262218074] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:19,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2575023] [2022-01-18 02:05:19,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:05:19,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:19,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:19,434 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:19,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 02:05:19,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:05:19,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:05:19,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:05:19,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:20,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:20,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2575023] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:20,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:20,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 02:05:20,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507875977] [2022-01-18 02:05:20,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:20,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 02:05:20,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 02:05:20,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:05:20,539 INFO L87 Difference]: Start difference. First operand 1825 states and 5187 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:31,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:31,173 INFO L93 Difference]: Finished difference Result 7250 states and 18862 transitions. [2022-01-18 02:05:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2022-01-18 02:05:31,174 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:31,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:31,185 INFO L225 Difference]: With dead ends: 7250 [2022-01-18 02:05:31,185 INFO L226 Difference]: Without dead ends: 7097 [2022-01-18 02:05:31,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33946 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=8556, Invalid=74100, Unknown=0, NotChecked=0, Total=82656 [2022-01-18 02:05:31,189 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 3169 mSDsluCounter, 6838 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3169 SdHoareTripleChecker+Valid, 6878 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:31,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3169 Valid, 6878 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:05:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2022-01-18 02:05:31,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 1813. [2022-01-18 02:05:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 2.837748344370861) internal successors, (5142), 1812 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 5142 transitions. [2022-01-18 02:05:31,241 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 5142 transitions. Word has length 72 [2022-01-18 02:05:31,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:31,241 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 5142 transitions. [2022-01-18 02:05:31,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 5142 transitions. [2022-01-18 02:05:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:31,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:31,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:31,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:31,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:31,458 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash -168753791, now seen corresponding path program 61 times [2022-01-18 02:05:31,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:31,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903905636] [2022-01-18 02:05:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:31,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:31,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:31,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903905636] [2022-01-18 02:05:31,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903905636] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:31,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820859301] [2022-01-18 02:05:31,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:05:31,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:31,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:31,614 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:31,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 02:05:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:31,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:05:31,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:32,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:32,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820859301] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:32,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:32,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:05:32,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560509073] [2022-01-18 02:05:32,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:32,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:05:32,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:32,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:05:32,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1241, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:05:32,640 INFO L87 Difference]: Start difference. First operand 1813 states and 5142 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:37,194 INFO L93 Difference]: Finished difference Result 4844 states and 12738 transitions. [2022-01-18 02:05:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 02:05:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:37,203 INFO L225 Difference]: With dead ends: 4844 [2022-01-18 02:05:37,203 INFO L226 Difference]: Without dead ends: 4667 [2022-01-18 02:05:37,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9131 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2618, Invalid=21874, Unknown=0, NotChecked=0, Total=24492 [2022-01-18 02:05:37,207 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 2012 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 3720 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:37,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2012 Valid, 3720 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:05:37,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2022-01-18 02:05:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 1889. [2022-01-18 02:05:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 2.8426906779661016) internal successors, (5367), 1888 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 5367 transitions. [2022-01-18 02:05:37,252 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 5367 transitions. Word has length 72 [2022-01-18 02:05:37,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:37,252 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 5367 transitions. [2022-01-18 02:05:37,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 5367 transitions. [2022-01-18 02:05:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:37,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:37,255 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] [2022-01-18 02:05:37,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:37,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:37,459 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1788326047, now seen corresponding path program 62 times [2022-01-18 02:05:37,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:37,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523924129] [2022-01-18 02:05:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:37,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:37,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:37,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523924129] [2022-01-18 02:05:37,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523924129] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:37,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2149553] [2022-01-18 02:05:37,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:05:37,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:37,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:37,675 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:37,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 02:05:37,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:05:37,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:05:37,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:05:37,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:38,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:38,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2149553] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:38,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:38,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:05:38,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187761126] [2022-01-18 02:05:38,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:38,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:05:38,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:38,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:05:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:05:38,270 INFO L87 Difference]: Start difference. First operand 1889 states and 5367 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:43,912 INFO L93 Difference]: Finished difference Result 5539 states and 14421 transitions. [2022-01-18 02:05:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-18 02:05:43,913 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:43,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:43,920 INFO L225 Difference]: With dead ends: 5539 [2022-01-18 02:05:43,920 INFO L226 Difference]: Without dead ends: 5392 [2022-01-18 02:05:43,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12578 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3667, Invalid=28195, Unknown=0, NotChecked=0, Total=31862 [2022-01-18 02:05:43,922 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 2045 mSDsluCounter, 5301 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 5205 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:43,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2045 Valid, 5205 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:05:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2022-01-18 02:05:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 1925. [2022-01-18 02:05:43,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 2.843035343035343) internal successors, (5470), 1924 states have internal predecessors, (5470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 5470 transitions. [2022-01-18 02:05:43,957 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 5470 transitions. Word has length 72 [2022-01-18 02:05:43,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:43,957 INFO L470 AbstractCegarLoop]: Abstraction has 1925 states and 5470 transitions. [2022-01-18 02:05:43,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 5470 transitions. [2022-01-18 02:05:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:43,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:43,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:43,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:44,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 02:05:44,175 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:44,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1479755403, now seen corresponding path program 63 times [2022-01-18 02:05:44,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:44,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637391563] [2022-01-18 02:05:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:44,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:44,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637391563] [2022-01-18 02:05:44,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637391563] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036570578] [2022-01-18 02:05:44,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:05:44,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:44,330 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:44,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 02:05:44,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:05:44,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:05:44,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:05:44,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:44,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:45,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036570578] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:45,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:45,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:05:45,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641721378] [2022-01-18 02:05:45,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:45,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:05:45,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:05:45,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1225, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:05:45,028 INFO L87 Difference]: Start difference. First operand 1925 states and 5470 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:47,879 INFO L93 Difference]: Finished difference Result 4347 states and 11287 transitions. [2022-01-18 02:05:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 02:05:47,879 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:47,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:47,885 INFO L225 Difference]: With dead ends: 4347 [2022-01-18 02:05:47,885 INFO L226 Difference]: Without dead ends: 4245 [2022-01-18 02:05:47,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5038 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1936, Invalid=12826, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 02:05:47,885 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1596 mSDsluCounter, 4720 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:47,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 4656 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:05:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2022-01-18 02:05:47,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 1877. [2022-01-18 02:05:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1876 states have (on average 2.8347547974413647) internal successors, (5318), 1876 states have internal predecessors, (5318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 5318 transitions. [2022-01-18 02:05:47,924 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 5318 transitions. Word has length 72 [2022-01-18 02:05:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:47,924 INFO L470 AbstractCegarLoop]: Abstraction has 1877 states and 5318 transitions. [2022-01-18 02:05:47,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 5318 transitions. [2022-01-18 02:05:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:47,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:47,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:47,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:48,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2022-01-18 02:05:48,142 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1703923715, now seen corresponding path program 64 times [2022-01-18 02:05:48,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:48,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249104122] [2022-01-18 02:05:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:48,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:48,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:48,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249104122] [2022-01-18 02:05:48,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249104122] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:48,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157673627] [2022-01-18 02:05:48,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:05:48,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:48,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:48,324 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:48,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 02:05:48,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:05:48,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:05:48,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:05:48,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:48,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:49,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157673627] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:49,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:49,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2022-01-18 02:05:49,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284583837] [2022-01-18 02:05:49,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:49,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:05:49,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:05:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:05:49,355 INFO L87 Difference]: Start difference. First operand 1877 states and 5318 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:51,912 INFO L93 Difference]: Finished difference Result 4006 states and 10477 transitions. [2022-01-18 02:05:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:05:51,912 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:51,917 INFO L225 Difference]: With dead ends: 4006 [2022-01-18 02:05:51,917 INFO L226 Difference]: Without dead ends: 3829 [2022-01-18 02:05:51,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4290 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1481, Invalid=11859, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 02:05:51,918 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1431 mSDsluCounter, 4520 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:51,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 4464 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:05:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2022-01-18 02:05:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 1833. [2022-01-18 02:05:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 2.808406113537118) internal successors, (5145), 1832 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 5145 transitions. [2022-01-18 02:05:51,944 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 5145 transitions. Word has length 72 [2022-01-18 02:05:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:51,944 INFO L470 AbstractCegarLoop]: Abstraction has 1833 states and 5145 transitions. [2022-01-18 02:05:51,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 38 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 5145 transitions. [2022-01-18 02:05:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:51,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:51,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:51,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:52,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:52,161 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1550978537, now seen corresponding path program 65 times [2022-01-18 02:05:52,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:52,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898211324] [2022-01-18 02:05:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:52,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:52,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:52,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898211324] [2022-01-18 02:05:52,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898211324] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:52,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845535797] [2022-01-18 02:05:52,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:05:52,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:52,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:52,300 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:52,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 02:05:52,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:05:52,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:05:52,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:05:52,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:52,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:53,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845535797] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:53,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:53,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:05:53,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850924648] [2022-01-18 02:05:53,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:53,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:05:53,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:53,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:05:53,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1378, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:05:53,019 INFO L87 Difference]: Start difference. First operand 1833 states and 5145 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:53,837 INFO L93 Difference]: Finished difference Result 3123 states and 8418 transitions. [2022-01-18 02:05:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 02:05:53,837 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:53,842 INFO L225 Difference]: With dead ends: 3123 [2022-01-18 02:05:53,843 INFO L226 Difference]: Without dead ends: 2934 [2022-01-18 02:05:53,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=807, Invalid=4163, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 02:05:53,843 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 1052 mSDsluCounter, 3234 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:53,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 3228 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:05:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2022-01-18 02:05:53,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1836. [2022-01-18 02:05:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 2.8256130790190737) internal successors, (5185), 1835 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 5185 transitions. [2022-01-18 02:05:53,866 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 5185 transitions. Word has length 72 [2022-01-18 02:05:53,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:53,866 INFO L470 AbstractCegarLoop]: Abstraction has 1836 states and 5185 transitions. [2022-01-18 02:05:53,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 5185 transitions. [2022-01-18 02:05:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:53,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:53,868 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:53,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-18 02:05:54,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:54,084 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:54,084 INFO L85 PathProgramCache]: Analyzing trace with hash -405746359, now seen corresponding path program 40 times [2022-01-18 02:05:54,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:54,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808569652] [2022-01-18 02:05:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:54,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:54,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:54,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808569652] [2022-01-18 02:05:54,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808569652] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:54,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422782026] [2022-01-18 02:05:54,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:05:54,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:54,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:54,261 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:54,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 02:05:54,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:05:54,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:05:54,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:05:54,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:54,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:55,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422782026] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:55,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:55,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:05:55,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675359260] [2022-01-18 02:05:55,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:55,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:05:55,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:55,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:05:55,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:05:55,477 INFO L87 Difference]: Start difference. First operand 1836 states and 5185 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:05:58,421 INFO L93 Difference]: Finished difference Result 3851 states and 10327 transitions. [2022-01-18 02:05:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 02:05:58,422 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:05:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:05:58,427 INFO L225 Difference]: With dead ends: 3851 [2022-01-18 02:05:58,427 INFO L226 Difference]: Without dead ends: 3749 [2022-01-18 02:05:58,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6246 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1982, Invalid=16650, Unknown=0, NotChecked=0, Total=18632 [2022-01-18 02:05:58,428 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1422 mSDsluCounter, 5792 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:05:58,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 5720 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:05:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2022-01-18 02:05:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 1850. [2022-01-18 02:05:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1849 states have (on average 2.8247701460248784) internal successors, (5223), 1849 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 5223 transitions. [2022-01-18 02:05:58,455 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 5223 transitions. Word has length 72 [2022-01-18 02:05:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:05:58,455 INFO L470 AbstractCegarLoop]: Abstraction has 1850 states and 5223 transitions. [2022-01-18 02:05:58,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:05:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 5223 transitions. [2022-01-18 02:05:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:05:58,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:05:58,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:05:58,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-01-18 02:05:58,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-18 02:05:58,670 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:05:58,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:05:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash 671436411, now seen corresponding path program 41 times [2022-01-18 02:05:58,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:05:58,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478472014] [2022-01-18 02:05:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:05:58,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:05:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:05:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:58,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:05:58,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478472014] [2022-01-18 02:05:58,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478472014] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:05:58,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735840616] [2022-01-18 02:05:58,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:05:58,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:05:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:05:58,803 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:05:58,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 02:05:58,899 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:05:58,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:05:58,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:05:58,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:05:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:59,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:05:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:05:59,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735840616] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:05:59,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:05:59,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:05:59,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520296338] [2022-01-18 02:05:59,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:05:59,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:05:59,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:05:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:05:59,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1856, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:05:59,776 INFO L87 Difference]: Start difference. First operand 1850 states and 5223 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:06:05,226 INFO L93 Difference]: Finished difference Result 4977 states and 13266 transitions. [2022-01-18 02:06:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-18 02:06:05,227 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:06:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:06:05,234 INFO L225 Difference]: With dead ends: 4977 [2022-01-18 02:06:05,234 INFO L226 Difference]: Without dead ends: 4845 [2022-01-18 02:06:05,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10088 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2957, Invalid=25435, Unknown=0, NotChecked=0, Total=28392 [2022-01-18 02:06:05,236 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 1697 mSDsluCounter, 6934 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 6881 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:06:05,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 6881 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:06:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2022-01-18 02:06:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 1862. [2022-01-18 02:06:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.830736163353036) internal successors, (5268), 1861 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 5268 transitions. [2022-01-18 02:06:05,277 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 5268 transitions. Word has length 72 [2022-01-18 02:06:05,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:06:05,277 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 5268 transitions. [2022-01-18 02:06:05,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 5268 transitions. [2022-01-18 02:06:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:06:05,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:06:05,279 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:06:05,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-01-18 02:06:05,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 02:06:05,495 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:06:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:06:05,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1737557453, now seen corresponding path program 42 times [2022-01-18 02:06:05,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:06:05,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516214055] [2022-01-18 02:06:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:06:05,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:06:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:05,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:06:05,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516214055] [2022-01-18 02:06:05,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516214055] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:06:05,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863458408] [2022-01-18 02:06:05,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:06:05,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:05,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:06:05,683 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:06:05,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 02:06:05,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:06:05,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:06:05,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:06:05,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:06:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:06,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:06:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:07,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863458408] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:06:07,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:06:07,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:06:07,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259870947] [2022-01-18 02:06:07,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:06:07,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:06:07,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:06:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:06:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:06:07,157 INFO L87 Difference]: Start difference. First operand 1862 states and 5268 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:06:14,717 INFO L93 Difference]: Finished difference Result 5581 states and 14906 transitions. [2022-01-18 02:06:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-01-18 02:06:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:06:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:06:14,726 INFO L225 Difference]: With dead ends: 5581 [2022-01-18 02:06:14,726 INFO L226 Difference]: Without dead ends: 5479 [2022-01-18 02:06:14,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18682 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4937, Invalid=43683, Unknown=0, NotChecked=0, Total=48620 [2022-01-18 02:06:14,731 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 2411 mSDsluCounter, 5660 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 5707 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:06:14,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2411 Valid, 5707 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:06:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2022-01-18 02:06:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 1866. [2022-01-18 02:06:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 2.8327077747989278) internal successors, (5283), 1865 states have internal predecessors, (5283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 5283 transitions. [2022-01-18 02:06:14,775 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 5283 transitions. Word has length 72 [2022-01-18 02:06:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:06:14,776 INFO L470 AbstractCegarLoop]: Abstraction has 1866 states and 5283 transitions. [2022-01-18 02:06:14,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 5283 transitions. [2022-01-18 02:06:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:06:14,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:06:14,778 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:06:14,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-01-18 02:06:14,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-01-18 02:06:14,996 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:06:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:06:14,996 INFO L85 PathProgramCache]: Analyzing trace with hash 702551193, now seen corresponding path program 43 times [2022-01-18 02:06:14,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:06:14,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844811035] [2022-01-18 02:06:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:06:14,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:06:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:15,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:06:15,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844811035] [2022-01-18 02:06:15,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844811035] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:06:15,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328903970] [2022-01-18 02:06:15,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:06:15,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:15,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:06:15,294 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:06:15,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 02:06:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:15,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:06:15,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:06:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:15,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:06:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:16,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328903970] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:06:16,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:06:16,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 02:06:16,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676941055] [2022-01-18 02:06:16,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:06:16,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 02:06:16,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:06:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 02:06:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1781, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:06:16,232 INFO L87 Difference]: Start difference. First operand 1866 states and 5283 transitions. Second operand has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:06:26,811 INFO L93 Difference]: Finished difference Result 6604 states and 17400 transitions. [2022-01-18 02:06:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-01-18 02:06:26,811 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:06:26,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:06:26,822 INFO L225 Difference]: With dead ends: 6604 [2022-01-18 02:06:26,822 INFO L226 Difference]: Without dead ends: 6502 [2022-01-18 02:06:26,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27107 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=6933, Invalid=61449, Unknown=0, NotChecked=0, Total=68382 [2022-01-18 02:06:26,826 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 2588 mSDsluCounter, 8281 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 8202 SdHoareTripleChecker+Invalid, 4613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:06:26,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 8202 Invalid, 4613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:06:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2022-01-18 02:06:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 1874. [2022-01-18 02:06:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1873 states have (on average 2.8387613454351306) internal successors, (5317), 1873 states have internal predecessors, (5317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 5317 transitions. [2022-01-18 02:06:26,878 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 5317 transitions. Word has length 72 [2022-01-18 02:06:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:06:26,878 INFO L470 AbstractCegarLoop]: Abstraction has 1874 states and 5317 transitions. [2022-01-18 02:06:26,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 45 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 5317 transitions. [2022-01-18 02:06:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:06:26,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:06:26,881 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:06:26,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 02:06:27,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:27,091 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:06:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:06:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1437201745, now seen corresponding path program 44 times [2022-01-18 02:06:27,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:06:27,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043018030] [2022-01-18 02:06:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:06:27,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:06:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:27,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:06:27,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043018030] [2022-01-18 02:06:27,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043018030] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:06:27,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011810818] [2022-01-18 02:06:27,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:06:27,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:06:27,278 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:06:27,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 02:06:27,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:06:27,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:06:27,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:06:27,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:06:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:27,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:06:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:28,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011810818] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:06:28,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:06:28,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:06:28,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869766047] [2022-01-18 02:06:28,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:06:28,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:06:28,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:06:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:06:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1855, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:06:28,341 INFO L87 Difference]: Start difference. First operand 1874 states and 5317 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:06:32,608 INFO L93 Difference]: Finished difference Result 4945 states and 13306 transitions. [2022-01-18 02:06:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 02:06:32,608 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:06:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:06:32,616 INFO L225 Difference]: With dead ends: 4945 [2022-01-18 02:06:32,616 INFO L226 Difference]: Without dead ends: 4813 [2022-01-18 02:06:32,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7355 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2232, Invalid=19524, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 02:06:32,618 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1568 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:06:32,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1568 Valid, 6307 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:06:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2022-01-18 02:06:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 1880. [2022-01-18 02:06:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 2.8403406067056944) internal successors, (5337), 1879 states have internal predecessors, (5337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 5337 transitions. [2022-01-18 02:06:32,659 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 5337 transitions. Word has length 72 [2022-01-18 02:06:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:06:32,659 INFO L470 AbstractCegarLoop]: Abstraction has 1880 states and 5337 transitions. [2022-01-18 02:06:32,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 5337 transitions. [2022-01-18 02:06:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:06:32,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:06:32,662 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:06:32,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-01-18 02:06:32,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-01-18 02:06:32,871 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:06:32,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:06:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1791644509, now seen corresponding path program 45 times [2022-01-18 02:06:32,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:06:32,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127201834] [2022-01-18 02:06:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:06:32,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:06:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:33,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:06:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127201834] [2022-01-18 02:06:33,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127201834] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:06:33,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926926803] [2022-01-18 02:06:33,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:06:33,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:33,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:06:33,144 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:06:33,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 02:06:33,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:06:33,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:06:33,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:06:33,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:06:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:33,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:06:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:34,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926926803] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:06:34,371 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:06:34,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:06:34,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231492092] [2022-01-18 02:06:34,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:06:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:06:34,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:06:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:06:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:06:34,372 INFO L87 Difference]: Start difference. First operand 1880 states and 5337 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:06:42,008 INFO L93 Difference]: Finished difference Result 6347 states and 16985 transitions. [2022-01-18 02:06:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-01-18 02:06:42,008 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:06:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:06:42,017 INFO L225 Difference]: With dead ends: 6347 [2022-01-18 02:06:42,017 INFO L226 Difference]: Without dead ends: 6245 [2022-01-18 02:06:42,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19546 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4776, Invalid=46074, Unknown=0, NotChecked=0, Total=50850 [2022-01-18 02:06:42,019 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 2304 mSDsluCounter, 6857 mSDsCounter, 0 mSdLazyCounter, 3689 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 6903 SdHoareTripleChecker+Invalid, 3945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:06:42,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2304 Valid, 6903 Invalid, 3945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3689 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:06:42,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2022-01-18 02:06:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 1884. [2022-01-18 02:06:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 2.8422729686670207) internal successors, (5352), 1883 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5352 transitions. [2022-01-18 02:06:42,056 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5352 transitions. Word has length 72 [2022-01-18 02:06:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:06:42,056 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 5352 transitions. [2022-01-18 02:06:42,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5352 transitions. [2022-01-18 02:06:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:06:42,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:06:42,059 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:06:42,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-01-18 02:06:42,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-01-18 02:06:42,275 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:06:42,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:06:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1468316527, now seen corresponding path program 46 times [2022-01-18 02:06:42,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:06:42,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680146682] [2022-01-18 02:06:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:06:42,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:06:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:42,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:06:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680146682] [2022-01-18 02:06:42,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680146682] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:06:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500055371] [2022-01-18 02:06:42,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:06:42,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:42,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:06:42,509 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:06:42,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 02:06:42,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:06:42,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:06:42,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:06:42,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:06:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:43,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:06:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:43,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500055371] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:06:43,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:06:43,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:06:43,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122879760] [2022-01-18 02:06:43,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:06:43,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:06:43,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:06:43,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:06:43,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:06:43,698 INFO L87 Difference]: Start difference. First operand 1884 states and 5352 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:06:48,416 INFO L93 Difference]: Finished difference Result 4111 states and 10883 transitions. [2022-01-18 02:06:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 02:06:48,417 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:06:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:06:48,423 INFO L225 Difference]: With dead ends: 4111 [2022-01-18 02:06:48,423 INFO L226 Difference]: Without dead ends: 4009 [2022-01-18 02:06:48,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8425 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2466, Invalid=22026, Unknown=0, NotChecked=0, Total=24492 [2022-01-18 02:06:48,425 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1555 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 3726 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 7806 SdHoareTripleChecker+Invalid, 3874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:06:48,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 7806 Invalid, 3874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3726 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:06:48,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2022-01-18 02:06:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 1860. [2022-01-18 02:06:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 2.828402366863905) internal successors, (5258), 1859 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 5258 transitions. [2022-01-18 02:06:48,453 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 5258 transitions. Word has length 72 [2022-01-18 02:06:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:06:48,453 INFO L470 AbstractCegarLoop]: Abstraction has 1860 states and 5258 transitions. [2022-01-18 02:06:48,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 5258 transitions. [2022-01-18 02:06:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:06:48,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:06:48,455 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:06:48,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-01-18 02:06:48,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-01-18 02:06:48,667 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:06:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:06:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash 661609801, now seen corresponding path program 47 times [2022-01-18 02:06:48,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:06:48,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642126488] [2022-01-18 02:06:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:06:48,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:06:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:48,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:06:48,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642126488] [2022-01-18 02:06:48,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642126488] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:06:48,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079803564] [2022-01-18 02:06:48,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:06:48,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:48,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:06:48,810 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:06:48,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 02:06:48,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:06:48,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:06:48,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:06:48,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:06:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:49,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:06:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:49,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079803564] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:06:49,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:06:49,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:06:49,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167152615] [2022-01-18 02:06:49,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:06:49,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:06:49,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:06:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:06:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:06:49,933 INFO L87 Difference]: Start difference. First operand 1860 states and 5258 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:52,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:06:52,538 INFO L93 Difference]: Finished difference Result 3383 states and 9043 transitions. [2022-01-18 02:06:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 02:06:52,539 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:06:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:06:52,544 INFO L225 Difference]: With dead ends: 3383 [2022-01-18 02:06:52,544 INFO L226 Difference]: Without dead ends: 3281 [2022-01-18 02:06:52,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3702 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1261, Invalid=10729, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 02:06:52,545 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 1428 mSDsluCounter, 5522 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5472 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:06:52,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 5472 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:06:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-18 02:06:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1862. [2022-01-18 02:06:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.830198817839871) internal successors, (5267), 1861 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 5267 transitions. [2022-01-18 02:06:52,570 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 5267 transitions. Word has length 72 [2022-01-18 02:06:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:06:52,570 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 5267 transitions. [2022-01-18 02:06:52,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 5267 transitions. [2022-01-18 02:06:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:06:52,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:06:52,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:06:52,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-01-18 02:06:52,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-01-18 02:06:52,776 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:06:52,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:06:52,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1613746735, now seen corresponding path program 48 times [2022-01-18 02:06:52,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:06:52,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746731210] [2022-01-18 02:06:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:06:52,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:06:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:52,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:06:52,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746731210] [2022-01-18 02:06:52,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746731210] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:06:52,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460133880] [2022-01-18 02:06:52,913 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:06:52,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:52,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:06:52,914 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:06:52,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 02:06:53,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:06:53,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:06:53,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:06:53,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:06:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:53,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:06:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:53,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460133880] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:06:53,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:06:53,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:06:53,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259662880] [2022-01-18 02:06:53,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:06:53,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:06:53,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:06:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:06:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:06:53,885 INFO L87 Difference]: Start difference. First operand 1862 states and 5267 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:06:59,151 INFO L93 Difference]: Finished difference Result 5553 states and 14312 transitions. [2022-01-18 02:06:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-18 02:06:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:06:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:06:59,160 INFO L225 Difference]: With dead ends: 5553 [2022-01-18 02:06:59,160 INFO L226 Difference]: Without dead ends: 5451 [2022-01-18 02:06:59,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9850 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2955, Invalid=24767, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 02:06:59,161 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 2743 mSDsluCounter, 8074 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 7971 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:06:59,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2743 Valid, 7971 Invalid, 3649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:06:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2022-01-18 02:06:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 1868. [2022-01-18 02:06:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 2.8034279592929834) internal successors, (5234), 1867 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 5234 transitions. [2022-01-18 02:06:59,196 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 5234 transitions. Word has length 72 [2022-01-18 02:06:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:06:59,196 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 5234 transitions. [2022-01-18 02:06:59,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:06:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 5234 transitions. [2022-01-18 02:06:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:06:59,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:06:59,198 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:06:59,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-01-18 02:06:59,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:59,416 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:06:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:06:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash 22142443, now seen corresponding path program 49 times [2022-01-18 02:06:59,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:06:59,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33567449] [2022-01-18 02:06:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:06:59,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:06:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:06:59,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:06:59,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33567449] [2022-01-18 02:06:59,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33567449] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:06:59,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343335893] [2022-01-18 02:06:59,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:06:59,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:06:59,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:06:59,592 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:06:59,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 02:06:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:06:59,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:06:59,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:00,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:00,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343335893] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:00,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:00,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:07:00,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626914748] [2022-01-18 02:07:00,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:00,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:07:00,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:07:00,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1822, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:07:00,836 INFO L87 Difference]: Start difference. First operand 1868 states and 5234 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:02,370 INFO L93 Difference]: Finished difference Result 2656 states and 7103 transitions. [2022-01-18 02:07:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 02:07:02,370 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:02,374 INFO L225 Difference]: With dead ends: 2656 [2022-01-18 02:07:02,374 INFO L226 Difference]: Without dead ends: 2554 [2022-01-18 02:07:02,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=791, Invalid=5215, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 02:07:02,374 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 804 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:02,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 2709 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:02,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-01-18 02:07:02,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1892. [2022-01-18 02:07:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 2.798519301956637) internal successors, (5292), 1891 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 5292 transitions. [2022-01-18 02:07:02,394 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 5292 transitions. Word has length 72 [2022-01-18 02:07:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:02,394 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 5292 transitions. [2022-01-18 02:07:02,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 5292 transitions. [2022-01-18 02:07:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:02,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:02,397 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] [2022-01-18 02:07:02,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:02,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:02,603 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash -204444139, now seen corresponding path program 66 times [2022-01-18 02:07:02,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:02,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362716045] [2022-01-18 02:07:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:02,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:02,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:02,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:02,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362716045] [2022-01-18 02:07:02,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362716045] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:02,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778541918] [2022-01-18 02:07:02,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:07:02,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:02,952 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:02,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 02:07:03,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:07:03,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:03,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:03,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:03,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:03,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778541918] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:03,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:03,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:07:03,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883348343] [2022-01-18 02:07:03,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:03,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:07:03,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:07:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:07:03,646 INFO L87 Difference]: Start difference. First operand 1892 states and 5292 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:04,482 INFO L93 Difference]: Finished difference Result 2664 states and 7238 transitions. [2022-01-18 02:07:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 02:07:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:04,486 INFO L225 Difference]: With dead ends: 2664 [2022-01-18 02:07:04,486 INFO L226 Difference]: Without dead ends: 2613 [2022-01-18 02:07:04,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=545, Invalid=2647, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:07:04,487 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 438 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:04,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 2574 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2022-01-18 02:07:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 1920. [2022-01-18 02:07:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 2.7998957790515893) internal successors, (5373), 1919 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 5373 transitions. [2022-01-18 02:07:04,509 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 5373 transitions. Word has length 72 [2022-01-18 02:07:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:04,509 INFO L470 AbstractCegarLoop]: Abstraction has 1920 states and 5373 transitions. [2022-01-18 02:07:04,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 5373 transitions. [2022-01-18 02:07:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:04,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:04,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:04,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-01-18 02:07:04,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:04,726 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash -505717815, now seen corresponding path program 67 times [2022-01-18 02:07:04,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:04,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879382012] [2022-01-18 02:07:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:04,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:04,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:04,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879382012] [2022-01-18 02:07:04,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879382012] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:04,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527263275] [2022-01-18 02:07:04,982 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:07:04,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:04,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:04,983 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:04,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 02:07:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:05,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:05,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:05,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:05,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527263275] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:05,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:05,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:07:05,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203527307] [2022-01-18 02:07:05,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:05,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:07:05,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:05,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:07:05,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:07:05,792 INFO L87 Difference]: Start difference. First operand 1920 states and 5373 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:06,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:06,810 INFO L93 Difference]: Finished difference Result 2805 states and 7590 transitions. [2022-01-18 02:07:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:07:06,810 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:06,814 INFO L225 Difference]: With dead ends: 2805 [2022-01-18 02:07:06,814 INFO L226 Difference]: Without dead ends: 2754 [2022-01-18 02:07:06,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=865, Invalid=3691, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 02:07:06,814 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 605 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:06,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 2288 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-01-18 02:07:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1940. [2022-01-18 02:07:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 2.8076328004125837) internal successors, (5444), 1939 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 5444 transitions. [2022-01-18 02:07:06,837 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 5444 transitions. Word has length 72 [2022-01-18 02:07:06,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:06,837 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 5444 transitions. [2022-01-18 02:07:06,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 5444 transitions. [2022-01-18 02:07:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:06,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:06,839 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] [2022-01-18 02:07:06,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-01-18 02:07:07,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-01-18 02:07:07,055 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash 927730493, now seen corresponding path program 68 times [2022-01-18 02:07:07,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:07,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434676655] [2022-01-18 02:07:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:07,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:07,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434676655] [2022-01-18 02:07:07,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434676655] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925330560] [2022-01-18 02:07:07,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:07:07,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:07,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:07,219 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:07,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 02:07:07,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:07:07,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:07,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:07,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:07,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:07,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925330560] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:07,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:07,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:07:07,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135299267] [2022-01-18 02:07:07,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:07,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:07:07,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:07:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:07:07,894 INFO L87 Difference]: Start difference. First operand 1940 states and 5444 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:08,774 INFO L93 Difference]: Finished difference Result 2707 states and 7402 transitions. [2022-01-18 02:07:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:07:08,775 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:08,779 INFO L225 Difference]: With dead ends: 2707 [2022-01-18 02:07:08,780 INFO L226 Difference]: Without dead ends: 2626 [2022-01-18 02:07:08,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=681, Invalid=3101, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 02:07:08,780 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 403 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:08,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 2322 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-18 02:07:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1916. [2022-01-18 02:07:08,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 2.797911227154047) internal successors, (5358), 1915 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 5358 transitions. [2022-01-18 02:07:08,807 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 5358 transitions. Word has length 72 [2022-01-18 02:07:08,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:08,807 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 5358 transitions. [2022-01-18 02:07:08,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 5358 transitions. [2022-01-18 02:07:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:08,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:08,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:08,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:09,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-18 02:07:09,031 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:09,031 INFO L85 PathProgramCache]: Analyzing trace with hash 80337543, now seen corresponding path program 69 times [2022-01-18 02:07:09,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:09,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787770227] [2022-01-18 02:07:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:09,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:09,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:09,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787770227] [2022-01-18 02:07:09,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787770227] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:09,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547964821] [2022-01-18 02:07:09,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:07:09,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:09,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:09,278 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:09,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 02:07:09,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:07:09,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:09,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:09,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:09,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:09,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547964821] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:09,988 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:09,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:07:09,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894728759] [2022-01-18 02:07:09,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:09,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:07:09,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:07:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:07:09,989 INFO L87 Difference]: Start difference. First operand 1916 states and 5358 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:10,730 INFO L93 Difference]: Finished difference Result 2669 states and 7262 transitions. [2022-01-18 02:07:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 02:07:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:10,733 INFO L225 Difference]: With dead ends: 2669 [2022-01-18 02:07:10,733 INFO L226 Difference]: Without dead ends: 2618 [2022-01-18 02:07:10,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=576, Invalid=2286, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 02:07:10,733 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 517 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:10,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 1982 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:10,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-01-18 02:07:10,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 1912. [2022-01-18 02:07:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 2.7980115122972267) internal successors, (5347), 1911 states have internal predecessors, (5347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 5347 transitions. [2022-01-18 02:07:10,754 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 5347 transitions. Word has length 72 [2022-01-18 02:07:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:10,755 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 5347 transitions. [2022-01-18 02:07:10,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 5347 transitions. [2022-01-18 02:07:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:10,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:10,757 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] [2022-01-18 02:07:10,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:10,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-01-18 02:07:10,959 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:10,959 INFO L85 PathProgramCache]: Analyzing trace with hash -635669965, now seen corresponding path program 70 times [2022-01-18 02:07:10,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:10,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233002604] [2022-01-18 02:07:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:10,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:11,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:11,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233002604] [2022-01-18 02:07:11,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233002604] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:11,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943185557] [2022-01-18 02:07:11,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:07:11,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:11,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:11,257 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:11,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 02:07:11,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:07:11,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:11,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:11,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:11,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:12,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943185557] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:12,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:12,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:07:12,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962054497] [2022-01-18 02:07:12,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:12,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:07:12,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:07:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:07:12,134 INFO L87 Difference]: Start difference. First operand 1912 states and 5347 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:13,353 INFO L93 Difference]: Finished difference Result 2693 states and 7332 transitions. [2022-01-18 02:07:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 02:07:13,354 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:13,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:13,359 INFO L225 Difference]: With dead ends: 2693 [2022-01-18 02:07:13,359 INFO L226 Difference]: Without dead ends: 2642 [2022-01-18 02:07:13,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=591, Invalid=2601, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:07:13,360 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 359 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:13,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2510 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-01-18 02:07:13,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1908. [2022-01-18 02:07:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.798112218143681) internal successors, (5336), 1907 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5336 transitions. [2022-01-18 02:07:13,390 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5336 transitions. Word has length 72 [2022-01-18 02:07:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:13,391 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5336 transitions. [2022-01-18 02:07:13,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5336 transitions. [2022-01-18 02:07:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:13,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:13,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:13,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-01-18 02:07:13,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-01-18 02:07:13,596 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:13,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:13,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1544223287, now seen corresponding path program 71 times [2022-01-18 02:07:13,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:13,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271171646] [2022-01-18 02:07:13,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:13,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:13,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271171646] [2022-01-18 02:07:13,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271171646] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070280727] [2022-01-18 02:07:13,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:07:13,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:13,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:13,811 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:13,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 02:07:13,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:07:13,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:13,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:13,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:14,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:14,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070280727] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:14,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:14,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:07:14,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274994997] [2022-01-18 02:07:14,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:14,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:07:14,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:07:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:07:14,483 INFO L87 Difference]: Start difference. First operand 1908 states and 5336 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:15,340 INFO L93 Difference]: Finished difference Result 2677 states and 7288 transitions. [2022-01-18 02:07:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 02:07:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:15,344 INFO L225 Difference]: With dead ends: 2677 [2022-01-18 02:07:15,345 INFO L226 Difference]: Without dead ends: 2626 [2022-01-18 02:07:15,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=645, Invalid=2661, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 02:07:15,345 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 416 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:15,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 2671 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-18 02:07:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1896. [2022-01-18 02:07:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.7984168865435355) internal successors, (5303), 1895 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5303 transitions. [2022-01-18 02:07:15,366 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5303 transitions. Word has length 72 [2022-01-18 02:07:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:15,367 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5303 transitions. [2022-01-18 02:07:15,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5303 transitions. [2022-01-18 02:07:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:15,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:15,369 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] [2022-01-18 02:07:15,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:15,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-01-18 02:07:15,586 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 220418257, now seen corresponding path program 72 times [2022-01-18 02:07:15,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:15,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52137699] [2022-01-18 02:07:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:15,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:15,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:15,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52137699] [2022-01-18 02:07:15,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52137699] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:15,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814318909] [2022-01-18 02:07:15,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:07:15,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:15,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:15,757 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:15,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 02:07:15,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:07:15,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:15,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:15,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:16,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:16,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814318909] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:16,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:16,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:07:16,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138323486] [2022-01-18 02:07:16,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:16,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:07:16,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:07:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:07:16,571 INFO L87 Difference]: Start difference. First operand 1896 states and 5303 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:17,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:17,603 INFO L93 Difference]: Finished difference Result 2708 states and 7347 transitions. [2022-01-18 02:07:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 02:07:17,604 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:17,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:17,607 INFO L225 Difference]: With dead ends: 2708 [2022-01-18 02:07:17,608 INFO L226 Difference]: Without dead ends: 2657 [2022-01-18 02:07:17,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=551, Invalid=2989, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 02:07:17,609 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 411 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:17,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 2285 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-01-18 02:07:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 1916. [2022-01-18 02:07:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 2.8) internal successors, (5362), 1915 states have internal predecessors, (5362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 5362 transitions. [2022-01-18 02:07:17,634 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 5362 transitions. Word has length 72 [2022-01-18 02:07:17,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:17,635 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 5362 transitions. [2022-01-18 02:07:17,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 5362 transitions. [2022-01-18 02:07:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:17,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:17,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:17,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-01-18 02:07:17,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:17,851 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash -80855419, now seen corresponding path program 73 times [2022-01-18 02:07:17,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871983520] [2022-01-18 02:07:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:17,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:18,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:18,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871983520] [2022-01-18 02:07:18,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871983520] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:18,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226319383] [2022-01-18 02:07:18,016 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:07:18,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:18,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:18,017 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:18,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-18 02:07:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:18,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:18,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:18,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:18,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226319383] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:18,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:18,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:07:18,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077915058] [2022-01-18 02:07:18,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:18,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:07:18,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:07:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:07:18,998 INFO L87 Difference]: Start difference. First operand 1916 states and 5362 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:20,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:20,317 INFO L93 Difference]: Finished difference Result 2795 states and 7547 transitions. [2022-01-18 02:07:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:07:20,317 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:20,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:20,322 INFO L225 Difference]: With dead ends: 2795 [2022-01-18 02:07:20,322 INFO L226 Difference]: Without dead ends: 2744 [2022-01-18 02:07:20,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=778, Invalid=3778, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 02:07:20,322 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 608 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:20,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 2469 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:20,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-01-18 02:07:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 1940. [2022-01-18 02:07:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 2.8076328004125837) internal successors, (5444), 1939 states have internal predecessors, (5444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 5444 transitions. [2022-01-18 02:07:20,354 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 5444 transitions. Word has length 72 [2022-01-18 02:07:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:20,354 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 5444 transitions. [2022-01-18 02:07:20,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 5444 transitions. [2022-01-18 02:07:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:20,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:20,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:20,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:20,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:20,568 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1352592889, now seen corresponding path program 74 times [2022-01-18 02:07:20,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:20,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887766009] [2022-01-18 02:07:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:20,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:20,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:20,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887766009] [2022-01-18 02:07:20,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887766009] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:20,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682417297] [2022-01-18 02:07:20,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:07:20,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:20,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:20,794 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:20,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-18 02:07:20,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:07:20,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:20,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:20,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:21,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:21,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682417297] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:21,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:21,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:07:21,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173270121] [2022-01-18 02:07:21,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:21,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:07:21,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:21,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:07:21,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:07:21,518 INFO L87 Difference]: Start difference. First operand 1940 states and 5444 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:22,431 INFO L93 Difference]: Finished difference Result 2685 states and 7338 transitions. [2022-01-18 02:07:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 02:07:22,431 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:22,435 INFO L225 Difference]: With dead ends: 2685 [2022-01-18 02:07:22,435 INFO L226 Difference]: Without dead ends: 2604 [2022-01-18 02:07:22,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=601, Invalid=3059, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 02:07:22,436 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 435 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:22,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 2778 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:22,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-01-18 02:07:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1916. [2022-01-18 02:07:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 2.797911227154047) internal successors, (5358), 1915 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 5358 transitions. [2022-01-18 02:07:22,462 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 5358 transitions. Word has length 72 [2022-01-18 02:07:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:22,462 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 5358 transitions. [2022-01-18 02:07:22,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 5358 transitions. [2022-01-18 02:07:22,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:22,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:22,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:22,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:22,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-01-18 02:07:22,665 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash 505199939, now seen corresponding path program 75 times [2022-01-18 02:07:22,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:22,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555201862] [2022-01-18 02:07:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:22,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:22,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555201862] [2022-01-18 02:07:22,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555201862] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025590047] [2022-01-18 02:07:22,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:07:22,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:22,932 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:22,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-18 02:07:23,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:07:23,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:23,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:23,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:23,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:23,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025590047] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:23,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:23,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:07:23,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142880482] [2022-01-18 02:07:23,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:23,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:07:23,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:07:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:07:23,710 INFO L87 Difference]: Start difference. First operand 1916 states and 5358 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:24,916 INFO L93 Difference]: Finished difference Result 2603 states and 7077 transitions. [2022-01-18 02:07:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:07:24,916 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:24,919 INFO L225 Difference]: With dead ends: 2603 [2022-01-18 02:07:24,919 INFO L226 Difference]: Without dead ends: 2552 [2022-01-18 02:07:24,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=659, Invalid=3247, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 02:07:24,920 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 498 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:24,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 2420 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-01-18 02:07:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1908. [2022-01-18 02:07:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.798112218143681) internal successors, (5336), 1907 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5336 transitions. [2022-01-18 02:07:24,941 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5336 transitions. Word has length 72 [2022-01-18 02:07:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:24,941 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5336 transitions. [2022-01-18 02:07:24,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5336 transitions. [2022-01-18 02:07:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:24,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:24,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:24,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:25,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:25,159 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:25,159 INFO L85 PathProgramCache]: Analyzing trace with hash -403353383, now seen corresponding path program 76 times [2022-01-18 02:07:25,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:25,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689887391] [2022-01-18 02:07:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:25,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:25,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:25,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689887391] [2022-01-18 02:07:25,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689887391] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:25,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868280357] [2022-01-18 02:07:25,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:07:25,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:25,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:25,336 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:25,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-18 02:07:25,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:07:25,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:25,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:25,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:25,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:26,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868280357] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:26,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:26,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:07:26,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727233530] [2022-01-18 02:07:26,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:26,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:07:26,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:07:26,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:07:26,119 INFO L87 Difference]: Start difference. First operand 1908 states and 5336 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:27,033 INFO L93 Difference]: Finished difference Result 2517 states and 6882 transitions. [2022-01-18 02:07:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:07:27,033 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:27,037 INFO L225 Difference]: With dead ends: 2517 [2022-01-18 02:07:27,037 INFO L226 Difference]: Without dead ends: 2466 [2022-01-18 02:07:27,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=716, Invalid=3316, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 02:07:27,038 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 411 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:27,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 2353 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-18 02:07:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 1896. [2022-01-18 02:07:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.7984168865435355) internal successors, (5303), 1895 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5303 transitions. [2022-01-18 02:07:27,060 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5303 transitions. Word has length 72 [2022-01-18 02:07:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:27,060 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5303 transitions. [2022-01-18 02:07:27,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5303 transitions. [2022-01-18 02:07:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:27,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:27,062 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:27,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:27,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:27,271 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:27,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1054018845, now seen corresponding path program 50 times [2022-01-18 02:07:27,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:27,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302921072] [2022-01-18 02:07:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:27,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:27,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:27,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302921072] [2022-01-18 02:07:27,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302921072] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:27,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326736979] [2022-01-18 02:07:27,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:07:27,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:27,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:27,411 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:27,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-18 02:07:27,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:07:27,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:27,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:07:27,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:28,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:28,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326736979] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:28,649 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:28,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:07:28,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132688790] [2022-01-18 02:07:28,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:28,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:07:28,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:07:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1852, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:07:28,650 INFO L87 Difference]: Start difference. First operand 1896 states and 5303 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:30,338 INFO L93 Difference]: Finished difference Result 3948 states and 10319 transitions. [2022-01-18 02:07:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 02:07:30,338 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:30,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:30,343 INFO L225 Difference]: With dead ends: 3948 [2022-01-18 02:07:30,343 INFO L226 Difference]: Without dead ends: 3846 [2022-01-18 02:07:30,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2614 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1133, Invalid=8373, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 02:07:30,344 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1288 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:30,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 3802 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2022-01-18 02:07:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 1896. [2022-01-18 02:07:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.7984168865435355) internal successors, (5303), 1895 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5303 transitions. [2022-01-18 02:07:30,370 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5303 transitions. Word has length 72 [2022-01-18 02:07:30,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:30,370 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5303 transitions. [2022-01-18 02:07:30,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5303 transitions. [2022-01-18 02:07:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:30,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:30,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:30,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:30,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:30,587 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash 954873125, now seen corresponding path program 77 times [2022-01-18 02:07:30,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:30,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47157394] [2022-01-18 02:07:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:30,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:30,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:30,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47157394] [2022-01-18 02:07:30,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47157394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:30,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074989766] [2022-01-18 02:07:30,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:07:30,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:30,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:30,883 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:30,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-18 02:07:30,999 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:07:31,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:31,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:31,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:31,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:31,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074989766] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:31,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:31,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:31,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997301687] [2022-01-18 02:07:31,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:31,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:31,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:31,988 INFO L87 Difference]: Start difference. First operand 1896 states and 5303 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:33,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:33,698 INFO L93 Difference]: Finished difference Result 2820 states and 7639 transitions. [2022-01-18 02:07:33,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:07:33,699 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:33,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:33,702 INFO L225 Difference]: With dead ends: 2820 [2022-01-18 02:07:33,702 INFO L226 Difference]: Without dead ends: 2769 [2022-01-18 02:07:33,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=684, Invalid=3738, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 02:07:33,703 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 430 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:33,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 3169 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:07:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-18 02:07:33,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1912. [2022-01-18 02:07:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 2.8001046572475143) internal successors, (5351), 1911 states have internal predecessors, (5351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 5351 transitions. [2022-01-18 02:07:33,725 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 5351 transitions. Word has length 72 [2022-01-18 02:07:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:33,725 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 5351 transitions. [2022-01-18 02:07:33,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 5351 transitions. [2022-01-18 02:07:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:33,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:33,728 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] [2022-01-18 02:07:33,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:33,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:33,930 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash 653599449, now seen corresponding path program 78 times [2022-01-18 02:07:33,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:33,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775684761] [2022-01-18 02:07:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:33,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:34,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:34,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775684761] [2022-01-18 02:07:34,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775684761] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:34,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197341634] [2022-01-18 02:07:34,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:07:34,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:34,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:34,151 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:34,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-18 02:07:34,264 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:07:34,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:34,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:34,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:34,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:34,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197341634] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:34,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:34,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:34,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253525049] [2022-01-18 02:07:34,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:34,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:34,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:34,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:34,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:34,985 INFO L87 Difference]: Start difference. First operand 1912 states and 5351 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:36,324 INFO L93 Difference]: Finished difference Result 2905 states and 7845 transitions. [2022-01-18 02:07:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 02:07:36,324 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:36,328 INFO L225 Difference]: With dead ends: 2905 [2022-01-18 02:07:36,328 INFO L226 Difference]: Without dead ends: 2854 [2022-01-18 02:07:36,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=904, Invalid=4066, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 02:07:36,328 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 638 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:36,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 2987 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-01-18 02:07:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1932. [2022-01-18 02:07:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.807871569135163) internal successors, (5422), 1931 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5422 transitions. [2022-01-18 02:07:36,351 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5422 transitions. Word has length 72 [2022-01-18 02:07:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:36,351 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5422 transitions. [2022-01-18 02:07:36,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5422 transitions. [2022-01-18 02:07:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:36,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:36,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:36,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-01-18 02:07:36,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-01-18 02:07:36,566 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:36,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:36,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2087047757, now seen corresponding path program 79 times [2022-01-18 02:07:36,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:36,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774628782] [2022-01-18 02:07:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:36,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:36,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:36,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774628782] [2022-01-18 02:07:36,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774628782] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:36,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228521638] [2022-01-18 02:07:36,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:07:36,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:36,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:36,808 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:36,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-18 02:07:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:36,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:36,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:37,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:37,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228521638] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:37,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:37,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:37,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415184153] [2022-01-18 02:07:37,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:37,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:37,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:37,832 INFO L87 Difference]: Start difference. First operand 1932 states and 5422 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:39,194 INFO L93 Difference]: Finished difference Result 2815 states and 7679 transitions. [2022-01-18 02:07:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 02:07:39,194 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:39,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:39,199 INFO L225 Difference]: With dead ends: 2815 [2022-01-18 02:07:39,199 INFO L226 Difference]: Without dead ends: 2734 [2022-01-18 02:07:39,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=693, Invalid=3467, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 02:07:39,200 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 534 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:39,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 2818 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2022-01-18 02:07:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 1908. [2022-01-18 02:07:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.798112218143681) internal successors, (5336), 1907 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5336 transitions. [2022-01-18 02:07:39,228 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5336 transitions. Word has length 72 [2022-01-18 02:07:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:39,228 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5336 transitions. [2022-01-18 02:07:39,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5336 transitions. [2022-01-18 02:07:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:39,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:39,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:39,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:39,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-01-18 02:07:39,447 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1239654807, now seen corresponding path program 80 times [2022-01-18 02:07:39,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:39,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981161399] [2022-01-18 02:07:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:39,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:39,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:39,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981161399] [2022-01-18 02:07:39,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981161399] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:39,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677783910] [2022-01-18 02:07:39,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:07:39,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:39,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:39,675 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:39,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-18 02:07:39,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:07:39,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:39,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:39,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:40,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:40,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677783910] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:40,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:40,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:40,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852648827] [2022-01-18 02:07:40,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:40,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:40,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:40,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:40,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:40,776 INFO L87 Difference]: Start difference. First operand 1908 states and 5336 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:41,815 INFO L93 Difference]: Finished difference Result 2689 states and 7301 transitions. [2022-01-18 02:07:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 02:07:41,815 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:41,818 INFO L225 Difference]: With dead ends: 2689 [2022-01-18 02:07:41,818 INFO L226 Difference]: Without dead ends: 2638 [2022-01-18 02:07:41,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=588, Invalid=2718, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 02:07:41,819 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 441 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:41,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 2746 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-01-18 02:07:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 1904. [2022-01-18 02:07:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 2.7982133473462953) internal successors, (5325), 1903 states have internal predecessors, (5325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 5325 transitions. [2022-01-18 02:07:41,842 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 5325 transitions. Word has length 72 [2022-01-18 02:07:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:41,842 INFO L470 AbstractCegarLoop]: Abstraction has 1904 states and 5325 transitions. [2022-01-18 02:07:41,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:41,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 5325 transitions. [2022-01-18 02:07:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:41,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:41,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:41,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:42,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-18 02:07:42,060 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 523647299, now seen corresponding path program 81 times [2022-01-18 02:07:42,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:42,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006868546] [2022-01-18 02:07:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:42,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:42,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:42,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006868546] [2022-01-18 02:07:42,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006868546] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:42,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525122667] [2022-01-18 02:07:42,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:07:42,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:42,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:42,372 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:42,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-18 02:07:42,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:07:42,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:42,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:42,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:42,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:43,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525122667] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:43,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:43,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:43,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346049809] [2022-01-18 02:07:43,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:43,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:43,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:43,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:43,178 INFO L87 Difference]: Start difference. First operand 1904 states and 5325 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:44,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:44,070 INFO L93 Difference]: Finished difference Result 2749 states and 7462 transitions. [2022-01-18 02:07:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 02:07:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:44,075 INFO L225 Difference]: With dead ends: 2749 [2022-01-18 02:07:44,075 INFO L226 Difference]: Without dead ends: 2698 [2022-01-18 02:07:44,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=631, Invalid=2909, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 02:07:44,076 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 565 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:44,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 2109 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2022-01-18 02:07:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1900. [2022-01-18 02:07:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 2.7983149025803056) internal successors, (5314), 1899 states have internal predecessors, (5314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 5314 transitions. [2022-01-18 02:07:44,106 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 5314 transitions. Word has length 72 [2022-01-18 02:07:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:44,106 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 5314 transitions. [2022-01-18 02:07:44,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 5314 transitions. [2022-01-18 02:07:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:44,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:44,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:44,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:44,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:44,324 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash -384906023, now seen corresponding path program 82 times [2022-01-18 02:07:44,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:44,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205708021] [2022-01-18 02:07:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:44,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:44,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:44,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205708021] [2022-01-18 02:07:44,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205708021] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:44,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49317753] [2022-01-18 02:07:44,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:07:44,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:44,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:44,542 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:44,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-18 02:07:44,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:07:44,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:44,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:44,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:44,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:45,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49317753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:45,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:45,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:45,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341503646] [2022-01-18 02:07:45,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:45,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:45,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:45,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:45,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:45,278 INFO L87 Difference]: Start difference. First operand 1900 states and 5314 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:46,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:46,152 INFO L93 Difference]: Finished difference Result 2705 states and 7345 transitions. [2022-01-18 02:07:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:07:46,152 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:46,155 INFO L225 Difference]: With dead ends: 2705 [2022-01-18 02:07:46,156 INFO L226 Difference]: Without dead ends: 2654 [2022-01-18 02:07:46,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=684, Invalid=3098, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 02:07:46,156 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 489 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:46,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 2315 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:07:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-01-18 02:07:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 1888. [2022-01-18 02:07:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 2.798622151563328) internal successors, (5281), 1887 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 5281 transitions. [2022-01-18 02:07:46,178 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 5281 transitions. Word has length 72 [2022-01-18 02:07:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:46,178 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 5281 transitions. [2022-01-18 02:07:46,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 5281 transitions. [2022-01-18 02:07:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:46,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:46,180 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] [2022-01-18 02:07:46,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-01-18 02:07:46,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-01-18 02:07:46,383 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:46,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:46,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1379735521, now seen corresponding path program 83 times [2022-01-18 02:07:46,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:46,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476032469] [2022-01-18 02:07:46,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:46,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:46,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:46,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476032469] [2022-01-18 02:07:46,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476032469] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:46,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869030653] [2022-01-18 02:07:46,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:07:46,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:46,591 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:46,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-18 02:07:46,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:07:46,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:46,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:46,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:47,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:47,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869030653] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:47,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:47,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:47,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996204174] [2022-01-18 02:07:47,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:47,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:47,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:47,617 INFO L87 Difference]: Start difference. First operand 1888 states and 5281 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:49,045 INFO L93 Difference]: Finished difference Result 2736 states and 7412 transitions. [2022-01-18 02:07:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:07:49,045 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:49,049 INFO L225 Difference]: With dead ends: 2736 [2022-01-18 02:07:49,049 INFO L226 Difference]: Without dead ends: 2685 [2022-01-18 02:07:49,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=587, Invalid=3573, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 02:07:49,049 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 450 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:49,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 2933 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:07:49,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-01-18 02:07:49,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1896. [2022-01-18 02:07:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.800527704485488) internal successors, (5307), 1895 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5307 transitions. [2022-01-18 02:07:49,071 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5307 transitions. Word has length 72 [2022-01-18 02:07:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:49,071 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5307 transitions. [2022-01-18 02:07:49,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5307 transitions. [2022-01-18 02:07:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:49,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:49,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:49,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:49,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-01-18 02:07:49,287 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1078461845, now seen corresponding path program 84 times [2022-01-18 02:07:49,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161224465] [2022-01-18 02:07:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:49,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:49,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:49,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161224465] [2022-01-18 02:07:49,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161224465] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:49,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796930806] [2022-01-18 02:07:49,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:07:49,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:49,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:49,454 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:49,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-18 02:07:49,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:07:49,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:49,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:49,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:50,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:50,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796930806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:50,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:50,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:50,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618885307] [2022-01-18 02:07:50,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:50,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:50,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:50,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:50,461 INFO L87 Difference]: Start difference. First operand 1896 states and 5307 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:52,248 INFO L93 Difference]: Finished difference Result 2862 states and 7713 transitions. [2022-01-18 02:07:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:07:52,248 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:52,252 INFO L225 Difference]: With dead ends: 2862 [2022-01-18 02:07:52,252 INFO L226 Difference]: Without dead ends: 2811 [2022-01-18 02:07:52,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=832, Invalid=4280, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 02:07:52,252 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 752 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:52,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 2534 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:07:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-01-18 02:07:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1920. [2022-01-18 02:07:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 2.80823345492444) internal successors, (5389), 1919 states have internal predecessors, (5389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 5389 transitions. [2022-01-18 02:07:52,275 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 5389 transitions. Word has length 72 [2022-01-18 02:07:52,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:52,275 INFO L470 AbstractCegarLoop]: Abstraction has 1920 states and 5389 transitions. [2022-01-18 02:07:52,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 5389 transitions. [2022-01-18 02:07:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:52,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:52,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:52,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:52,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:52,492 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1783057143, now seen corresponding path program 85 times [2022-01-18 02:07:52,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:52,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895570895] [2022-01-18 02:07:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:52,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:52,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:52,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895570895] [2022-01-18 02:07:52,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895570895] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:52,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627198906] [2022-01-18 02:07:52,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:07:52,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:52,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:52,708 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:52,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-18 02:07:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:52,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:52,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:53,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:53,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627198906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:53,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:53,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:53,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318892329] [2022-01-18 02:07:53,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:53,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:53,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:53,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:53,808 INFO L87 Difference]: Start difference. First operand 1920 states and 5389 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:55,322 INFO L93 Difference]: Finished difference Result 2760 states and 7526 transitions. [2022-01-18 02:07:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:07:55,322 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:55,326 INFO L225 Difference]: With dead ends: 2760 [2022-01-18 02:07:55,326 INFO L226 Difference]: Without dead ends: 2679 [2022-01-18 02:07:55,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=626, Invalid=3406, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 02:07:55,326 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 496 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:55,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 2607 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:07:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2022-01-18 02:07:55,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 1896. [2022-01-18 02:07:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.7984168865435355) internal successors, (5303), 1895 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5303 transitions. [2022-01-18 02:07:55,348 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 5303 transitions. Word has length 72 [2022-01-18 02:07:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:55,348 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 5303 transitions. [2022-01-18 02:07:55,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 5303 transitions. [2022-01-18 02:07:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:55,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:55,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:55,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-01-18 02:07:55,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:55,560 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1664517203, now seen corresponding path program 86 times [2022-01-18 02:07:55,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:55,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233970589] [2022-01-18 02:07:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:55,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:55,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:55,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233970589] [2022-01-18 02:07:55,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233970589] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:55,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122062854] [2022-01-18 02:07:55,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:07:55,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:55,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:55,818 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:55,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-18 02:07:55,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:07:55,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:55,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:55,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:56,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:56,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122062854] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:56,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:56,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:56,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038502035] [2022-01-18 02:07:56,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:56,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:56,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:56,920 INFO L87 Difference]: Start difference. First operand 1896 states and 5303 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:07:58,330 INFO L93 Difference]: Finished difference Result 2674 states and 7258 transitions. [2022-01-18 02:07:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:07:58,331 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:07:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:07:58,334 INFO L225 Difference]: With dead ends: 2674 [2022-01-18 02:07:58,334 INFO L226 Difference]: Without dead ends: 2623 [2022-01-18 02:07:58,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=668, Invalid=3492, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 02:07:58,334 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 609 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:07:58,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 2183 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:07:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2022-01-18 02:07:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 1888. [2022-01-18 02:07:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 2.798622151563328) internal successors, (5281), 1887 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:58,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 5281 transitions. [2022-01-18 02:07:58,372 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 5281 transitions. Word has length 72 [2022-01-18 02:07:58,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:07:58,372 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 5281 transitions. [2022-01-18 02:07:58,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:07:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 5281 transitions. [2022-01-18 02:07:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:07:58,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:07:58,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:07:58,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-01-18 02:07:58,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:58,575 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:07:58,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:07:58,575 INFO L85 PathProgramCache]: Analyzing trace with hash 755963881, now seen corresponding path program 87 times [2022-01-18 02:07:58,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:07:58,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116955881] [2022-01-18 02:07:58,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:07:58,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:07:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:07:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:58,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:07:58,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116955881] [2022-01-18 02:07:58,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116955881] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:07:58,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821925706] [2022-01-18 02:07:58,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:07:58,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:07:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:07:58,828 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:07:58,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-18 02:07:58,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:07:58,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:07:58,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:07:58,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:07:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:59,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:07:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:07:59,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821925706] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:07:59,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:07:59,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:07:59,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321989422] [2022-01-18 02:07:59,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:07:59,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:07:59,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:07:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:07:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:07:59,933 INFO L87 Difference]: Start difference. First operand 1888 states and 5281 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:01,288 INFO L93 Difference]: Finished difference Result 2662 states and 7229 transitions. [2022-01-18 02:08:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 02:08:01,288 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:01,292 INFO L225 Difference]: With dead ends: 2662 [2022-01-18 02:08:01,292 INFO L226 Difference]: Without dead ends: 2611 [2022-01-18 02:08:01,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=726, Invalid=3564, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 02:08:01,292 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 529 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:01,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2512 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:08:01,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-01-18 02:08:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 1872. [2022-01-18 02:08:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 2.7990379476215925) internal successors, (5237), 1871 states have internal predecessors, (5237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 5237 transitions. [2022-01-18 02:08:01,314 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 5237 transitions. Word has length 72 [2022-01-18 02:08:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:01,314 INFO L470 AbstractCegarLoop]: Abstraction has 1872 states and 5237 transitions. [2022-01-18 02:08:01,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 5237 transitions. [2022-01-18 02:08:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:01,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:01,316 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:01,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:01,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-01-18 02:08:01,523 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash 748900975, now seen corresponding path program 51 times [2022-01-18 02:08:01,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:01,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044765768] [2022-01-18 02:08:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:01,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:01,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:01,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044765768] [2022-01-18 02:08:01,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044765768] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:01,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138243968] [2022-01-18 02:08:01,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:08:01,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:01,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:01,721 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:01,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-18 02:08:01,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:08:01,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:01,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:08:01,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:02,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:03,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138243968] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:03,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:03,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2022-01-18 02:08:03,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697424929] [2022-01-18 02:08:03,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:03,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:08:03,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:03,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:08:03,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1854, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:08:03,253 INFO L87 Difference]: Start difference. First operand 1872 states and 5237 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:06,664 INFO L93 Difference]: Finished difference Result 4380 states and 11515 transitions. [2022-01-18 02:08:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 02:08:06,664 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:06,670 INFO L225 Difference]: With dead ends: 4380 [2022-01-18 02:08:06,670 INFO L226 Difference]: Without dead ends: 4278 [2022-01-18 02:08:06,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5113 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1827, Invalid=14685, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 02:08:06,672 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1244 mSDsluCounter, 4719 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 4728 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:06,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 4728 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:08:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4278 states. [2022-01-18 02:08:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4278 to 1888. [2022-01-18 02:08:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 2.807101218865925) internal successors, (5297), 1887 states have internal predecessors, (5297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 5297 transitions. [2022-01-18 02:08:06,701 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 5297 transitions. Word has length 72 [2022-01-18 02:08:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:06,701 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 5297 transitions. [2022-01-18 02:08:06,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 5297 transitions. [2022-01-18 02:08:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:06,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:06,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:06,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:06,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-01-18 02:08:06,919 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:06,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash -12326635, now seen corresponding path program 88 times [2022-01-18 02:08:06,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:06,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452023854] [2022-01-18 02:08:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:06,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:07,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:07,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452023854] [2022-01-18 02:08:07,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452023854] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:07,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899475671] [2022-01-18 02:08:07,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:08:07,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:07,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:07,109 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:07,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-18 02:08:07,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:08:07,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:07,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:07,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:07,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:08,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899475671] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:08,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:08,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:08:08,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129785916] [2022-01-18 02:08:08,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:08,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:08:08,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:08:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:08:08,131 INFO L87 Difference]: Start difference. First operand 1888 states and 5297 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:09,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:09,403 INFO L93 Difference]: Finished difference Result 2741 states and 7416 transitions. [2022-01-18 02:08:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 02:08:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:09,406 INFO L225 Difference]: With dead ends: 2741 [2022-01-18 02:08:09,406 INFO L226 Difference]: Without dead ends: 2690 [2022-01-18 02:08:09,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=619, Invalid=3937, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 02:08:09,407 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 479 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:09,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 3086 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:08:09,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-01-18 02:08:09,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1892. [2022-01-18 02:08:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 2.809095716552089) internal successors, (5312), 1891 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 5312 transitions. [2022-01-18 02:08:09,428 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 5312 transitions. Word has length 72 [2022-01-18 02:08:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:09,429 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 5312 transitions. [2022-01-18 02:08:09,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 5312 transitions. [2022-01-18 02:08:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:09,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:09,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:09,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:09,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-01-18 02:08:09,646 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash -313600311, now seen corresponding path program 89 times [2022-01-18 02:08:09,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:09,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564423878] [2022-01-18 02:08:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:09,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:09,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:09,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564423878] [2022-01-18 02:08:09,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564423878] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:09,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644775630] [2022-01-18 02:08:09,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:08:09,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:09,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:09,802 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:09,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-18 02:08:09,948 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:08:09,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:09,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:09,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:10,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:10,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644775630] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:10,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:10,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:08:10,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205669858] [2022-01-18 02:08:10,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:10,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:08:10,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:08:10,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:08:10,593 INFO L87 Difference]: Start difference. First operand 1892 states and 5312 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:12,053 INFO L93 Difference]: Finished difference Result 2868 states and 7714 transitions. [2022-01-18 02:08:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 02:08:12,053 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:12,057 INFO L225 Difference]: With dead ends: 2868 [2022-01-18 02:08:12,057 INFO L226 Difference]: Without dead ends: 2817 [2022-01-18 02:08:12,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=887, Invalid=4965, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 02:08:12,057 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 735 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:12,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 3057 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-01-18 02:08:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1892. [2022-01-18 02:08:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 2.81332628239027) internal successors, (5320), 1891 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 5320 transitions. [2022-01-18 02:08:12,083 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 5320 transitions. Word has length 72 [2022-01-18 02:08:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:12,083 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 5320 transitions. [2022-01-18 02:08:12,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 5320 transitions. [2022-01-18 02:08:12,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:12,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:12,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:12,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:12,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-01-18 02:08:12,296 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:12,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1119847997, now seen corresponding path program 90 times [2022-01-18 02:08:12,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:12,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783228110] [2022-01-18 02:08:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:12,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:12,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:12,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783228110] [2022-01-18 02:08:12,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783228110] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:12,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561262035] [2022-01-18 02:08:12,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:08:12,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:12,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:12,554 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:12,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-18 02:08:12,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:08:12,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:12,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:12,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:13,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:13,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561262035] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:13,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:13,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:08:13,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514628422] [2022-01-18 02:08:13,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:13,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:08:13,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:13,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:08:13,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:08:13,511 INFO L87 Difference]: Start difference. First operand 1892 states and 5320 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:15,098 INFO L93 Difference]: Finished difference Result 2750 states and 7483 transitions. [2022-01-18 02:08:15,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:08:15,099 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:15,102 INFO L225 Difference]: With dead ends: 2750 [2022-01-18 02:08:15,102 INFO L226 Difference]: Without dead ends: 2684 [2022-01-18 02:08:15,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=739, Invalid=4373, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 02:08:15,102 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 625 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:15,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2404 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2022-01-18 02:08:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1876. [2022-01-18 02:08:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 2.8053333333333335) internal successors, (5260), 1875 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 5260 transitions. [2022-01-18 02:08:15,123 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 5260 transitions. Word has length 72 [2022-01-18 02:08:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:15,123 INFO L470 AbstractCegarLoop]: Abstraction has 1876 states and 5260 transitions. [2022-01-18 02:08:15,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 5260 transitions. [2022-01-18 02:08:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:15,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:15,125 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] [2022-01-18 02:08:15,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:15,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-18 02:08:15,333 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash 272455047, now seen corresponding path program 91 times [2022-01-18 02:08:15,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:15,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863480784] [2022-01-18 02:08:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:15,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:15,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:15,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863480784] [2022-01-18 02:08:15,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863480784] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:15,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801358139] [2022-01-18 02:08:15,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:08:15,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:15,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:15,572 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:15,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-18 02:08:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:15,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:15,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:15,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:16,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801358139] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:16,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:16,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:08:16,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917215205] [2022-01-18 02:08:16,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:16,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:08:16,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:08:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:08:16,337 INFO L87 Difference]: Start difference. First operand 1876 states and 5260 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:18,268 INFO L93 Difference]: Finished difference Result 2739 states and 7423 transitions. [2022-01-18 02:08:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 02:08:18,268 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:18,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:18,271 INFO L225 Difference]: With dead ends: 2739 [2022-01-18 02:08:18,272 INFO L226 Difference]: Without dead ends: 2688 [2022-01-18 02:08:18,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=724, Invalid=4678, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 02:08:18,272 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 561 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:18,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 2888 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:08:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2022-01-18 02:08:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 1868. [2022-01-18 02:08:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 2.805570433851098) internal successors, (5238), 1867 states have internal predecessors, (5238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 5238 transitions. [2022-01-18 02:08:18,293 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 5238 transitions. Word has length 72 [2022-01-18 02:08:18,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:18,294 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 5238 transitions. [2022-01-18 02:08:18,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 5238 transitions. [2022-01-18 02:08:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:18,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:18,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:18,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:18,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-01-18 02:08:18,497 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash -636098275, now seen corresponding path program 92 times [2022-01-18 02:08:18,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:18,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386617067] [2022-01-18 02:08:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:18,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:18,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:18,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386617067] [2022-01-18 02:08:18,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386617067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:18,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869763694] [2022-01-18 02:08:18,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:08:18,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:18,731 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:18,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-18 02:08:18,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:08:18,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:18,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:18,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:19,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:19,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869763694] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:19,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:19,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:08:19,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348225726] [2022-01-18 02:08:19,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:19,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:08:19,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:08:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:08:19,671 INFO L87 Difference]: Start difference. First operand 1868 states and 5238 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:21,018 INFO L93 Difference]: Finished difference Result 2673 states and 7279 transitions. [2022-01-18 02:08:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:08:21,019 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:21,022 INFO L225 Difference]: With dead ends: 2673 [2022-01-18 02:08:21,022 INFO L226 Difference]: Without dead ends: 2622 [2022-01-18 02:08:21,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=860, Invalid=5302, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:08:21,023 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 583 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:21,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2728 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2022-01-18 02:08:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1840. [2022-01-18 02:08:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 2.804241435562806) internal successors, (5157), 1839 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:21,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 5157 transitions. [2022-01-18 02:08:21,057 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 5157 transitions. Word has length 72 [2022-01-18 02:08:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:21,057 INFO L470 AbstractCegarLoop]: Abstraction has 1840 states and 5157 transitions. [2022-01-18 02:08:21,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 5157 transitions. [2022-01-18 02:08:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:21,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:21,059 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] [2022-01-18 02:08:21,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:21,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2022-01-18 02:08:21,268 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:21,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2052628847, now seen corresponding path program 93 times [2022-01-18 02:08:21,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:21,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968953706] [2022-01-18 02:08:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:21,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:21,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:21,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968953706] [2022-01-18 02:08:21,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968953706] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:21,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632450860] [2022-01-18 02:08:21,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:08:21,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:21,429 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:21,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-18 02:08:21,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:08:21,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:21,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:21,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:21,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:22,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632450860] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:22,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:22,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:22,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854216192] [2022-01-18 02:08:22,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:22,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:22,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:22,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:22,069 INFO L87 Difference]: Start difference. First operand 1840 states and 5157 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:22,519 INFO L93 Difference]: Finished difference Result 2611 states and 7086 transitions. [2022-01-18 02:08:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 02:08:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:22,523 INFO L225 Difference]: With dead ends: 2611 [2022-01-18 02:08:22,523 INFO L226 Difference]: Without dead ends: 2560 [2022-01-18 02:08:22,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=2023, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 02:08:22,523 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 347 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:22,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1982 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:08:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-01-18 02:08:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1868. [2022-01-18 02:08:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 2.8012854847348687) internal successors, (5230), 1867 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 5230 transitions. [2022-01-18 02:08:22,544 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 5230 transitions. Word has length 72 [2022-01-18 02:08:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:22,544 INFO L470 AbstractCegarLoop]: Abstraction has 1868 states and 5230 transitions. [2022-01-18 02:08:22,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 5230 transitions. [2022-01-18 02:08:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:22,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:22,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:22,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:22,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-01-18 02:08:22,762 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:22,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:22,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1771146751, now seen corresponding path program 94 times [2022-01-18 02:08:22,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:22,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506959789] [2022-01-18 02:08:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:22,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:22,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506959789] [2022-01-18 02:08:22,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506959789] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559967850] [2022-01-18 02:08:22,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:08:22,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:22,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:22,944 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:22,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-18 02:08:23,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:08:23,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:23,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:23,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:23,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:23,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559967850] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:23,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:23,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:23,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062355093] [2022-01-18 02:08:23,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:23,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:23,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:23,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:23,649 INFO L87 Difference]: Start difference. First operand 1868 states and 5230 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:24,722 INFO L93 Difference]: Finished difference Result 2767 states and 7503 transitions. [2022-01-18 02:08:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:08:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:24,726 INFO L225 Difference]: With dead ends: 2767 [2022-01-18 02:08:24,726 INFO L226 Difference]: Without dead ends: 2716 [2022-01-18 02:08:24,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=764, Invalid=3658, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 02:08:24,727 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 391 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:24,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 2570 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2022-01-18 02:08:24,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1884. [2022-01-18 02:08:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 2.802973977695167) internal successors, (5278), 1883 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 5278 transitions. [2022-01-18 02:08:24,751 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 5278 transitions. Word has length 72 [2022-01-18 02:08:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:24,752 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 5278 transitions. [2022-01-18 02:08:24,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 5278 transitions. [2022-01-18 02:08:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:24,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:24,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:24,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2022-01-18 02:08:24,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:24,966 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:24,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1469873075, now seen corresponding path program 95 times [2022-01-18 02:08:24,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:24,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702428466] [2022-01-18 02:08:24,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:24,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:25,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:25,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702428466] [2022-01-18 02:08:25,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702428466] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:25,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288656711] [2022-01-18 02:08:25,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:08:25,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:25,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:25,198 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:25,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-18 02:08:25,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:08:25,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:25,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:25,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:25,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:25,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288656711] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:25,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:25,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:25,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610818122] [2022-01-18 02:08:25,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:25,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:25,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:25,974 INFO L87 Difference]: Start difference. First operand 1884 states and 5278 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:27,168 INFO L93 Difference]: Finished difference Result 2956 states and 7974 transitions. [2022-01-18 02:08:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 02:08:27,169 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:27,172 INFO L225 Difference]: With dead ends: 2956 [2022-01-18 02:08:27,172 INFO L226 Difference]: Without dead ends: 2905 [2022-01-18 02:08:27,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1172, Invalid=4834, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 02:08:27,173 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 607 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:27,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 2244 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:08:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2022-01-18 02:08:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1900. [2022-01-18 02:08:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 2.810953133228015) internal successors, (5338), 1899 states have internal predecessors, (5338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 5338 transitions. [2022-01-18 02:08:27,196 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 5338 transitions. Word has length 72 [2022-01-18 02:08:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:27,196 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 5338 transitions. [2022-01-18 02:08:27,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 5338 transitions. [2022-01-18 02:08:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:27,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:27,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:27,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:27,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:27,403 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1391645913, now seen corresponding path program 96 times [2022-01-18 02:08:27,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23892907] [2022-01-18 02:08:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:27,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:27,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:27,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23892907] [2022-01-18 02:08:27,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23892907] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:27,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030964412] [2022-01-18 02:08:27,578 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:08:27,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:27,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:27,579 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:27,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-18 02:08:27,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:08:27,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:27,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:27,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:28,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:28,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030964412] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:28,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:28,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:28,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911458923] [2022-01-18 02:08:28,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:28,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:28,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:28,313 INFO L87 Difference]: Start difference. First operand 1900 states and 5338 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:29,132 INFO L93 Difference]: Finished difference Result 2698 states and 7382 transitions. [2022-01-18 02:08:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:08:29,132 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:29,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:29,136 INFO L225 Difference]: With dead ends: 2698 [2022-01-18 02:08:29,136 INFO L226 Difference]: Without dead ends: 2617 [2022-01-18 02:08:29,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 02:08:29,136 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 417 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:29,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 2272 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:08:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2022-01-18 02:08:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1924. [2022-01-18 02:08:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.8081123244929795) internal successors, (5400), 1923 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:29,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5400 transitions. [2022-01-18 02:08:29,159 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5400 transitions. Word has length 72 [2022-01-18 02:08:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:29,159 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 5400 transitions. [2022-01-18 02:08:29,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5400 transitions. [2022-01-18 02:08:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:29,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:29,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:29,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:29,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:29,377 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:29,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1721412685, now seen corresponding path program 97 times [2022-01-18 02:08:29,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:29,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987545403] [2022-01-18 02:08:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:29,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:29,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:29,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987545403] [2022-01-18 02:08:29,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987545403] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:29,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055617711] [2022-01-18 02:08:29,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:08:29,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:29,598 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:29,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-18 02:08:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:29,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:29,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:30,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:30,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055617711] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:30,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:30,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:30,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124370402] [2022-01-18 02:08:30,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:30,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:30,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:30,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:30,337 INFO L87 Difference]: Start difference. First operand 1924 states and 5400 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:31,384 INFO L93 Difference]: Finished difference Result 2846 states and 7732 transitions. [2022-01-18 02:08:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 02:08:31,384 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:31,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:31,389 INFO L225 Difference]: With dead ends: 2846 [2022-01-18 02:08:31,389 INFO L226 Difference]: Without dead ends: 2795 [2022-01-18 02:08:31,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=583, Invalid=2609, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:08:31,389 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 524 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:31,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 2337 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2022-01-18 02:08:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 1940. [2022-01-18 02:08:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 2.809695719443012) internal successors, (5448), 1939 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 5448 transitions. [2022-01-18 02:08:31,417 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 5448 transitions. Word has length 72 [2022-01-18 02:08:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:31,417 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 5448 transitions. [2022-01-18 02:08:31,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 5448 transitions. [2022-01-18 02:08:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:31,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:31,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:31,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:31,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:31,637 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash -287964377, now seen corresponding path program 98 times [2022-01-18 02:08:31,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:31,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757840502] [2022-01-18 02:08:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:31,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:31,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:31,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757840502] [2022-01-18 02:08:31,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757840502] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:31,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556962026] [2022-01-18 02:08:31,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:08:31,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:31,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:31,901 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:31,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-01-18 02:08:32,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:08:32,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:32,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:32,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:32,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:32,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556962026] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:32,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:32,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:32,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489518753] [2022-01-18 02:08:32,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:32,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:32,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:32,839 INFO L87 Difference]: Start difference. First operand 1940 states and 5448 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:33,807 INFO L93 Difference]: Finished difference Result 2892 states and 7924 transitions. [2022-01-18 02:08:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:08:33,807 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:33,812 INFO L225 Difference]: With dead ends: 2892 [2022-01-18 02:08:33,812 INFO L226 Difference]: Without dead ends: 2796 [2022-01-18 02:08:33,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=804, Invalid=3752, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 02:08:33,813 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 495 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:33,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 2427 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:08:33,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2022-01-18 02:08:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 1932. [2022-01-18 02:08:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.809943034697048) internal successors, (5426), 1931 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5426 transitions. [2022-01-18 02:08:33,847 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5426 transitions. Word has length 72 [2022-01-18 02:08:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:33,847 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5426 transitions. [2022-01-18 02:08:33,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5426 transitions. [2022-01-18 02:08:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:33,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:33,850 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] [2022-01-18 02:08:33,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:34,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-01-18 02:08:34,062 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1857547103, now seen corresponding path program 99 times [2022-01-18 02:08:34,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:34,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949294176] [2022-01-18 02:08:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:34,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:34,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:34,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949294176] [2022-01-18 02:08:34,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949294176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:34,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493908146] [2022-01-18 02:08:34,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:08:34,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:34,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:34,247 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:34,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-01-18 02:08:34,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:08:34,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:34,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:34,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:34,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:34,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493908146] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:34,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:34,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:34,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845476680] [2022-01-18 02:08:34,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:34,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:34,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:34,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:34,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:34,927 INFO L87 Difference]: Start difference. First operand 1932 states and 5426 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:35,772 INFO L93 Difference]: Finished difference Result 2900 states and 7876 transitions. [2022-01-18 02:08:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 02:08:35,772 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:35,775 INFO L225 Difference]: With dead ends: 2900 [2022-01-18 02:08:35,775 INFO L226 Difference]: Without dead ends: 2849 [2022-01-18 02:08:35,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=626, Invalid=2914, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 02:08:35,775 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 623 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:35,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 2301 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:08:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2022-01-18 02:08:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1932. [2022-01-18 02:08:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.809943034697048) internal successors, (5426), 1931 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5426 transitions. [2022-01-18 02:08:35,798 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5426 transitions. Word has length 72 [2022-01-18 02:08:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:35,799 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5426 transitions. [2022-01-18 02:08:35,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5426 transitions. [2022-01-18 02:08:35,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:35,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:35,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:35,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:36,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-01-18 02:08:36,005 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1003971885, now seen corresponding path program 100 times [2022-01-18 02:08:36,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:36,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237740439] [2022-01-18 02:08:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:36,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:36,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237740439] [2022-01-18 02:08:36,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237740439] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265705681] [2022-01-18 02:08:36,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:08:36,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:36,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:36,171 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:36,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-01-18 02:08:36,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:08:36,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:36,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:36,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:36,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:36,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265705681] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:36,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:36,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:36,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150740939] [2022-01-18 02:08:36,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:36,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:36,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:36,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:36,851 INFO L87 Difference]: Start difference. First operand 1932 states and 5426 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:37,928 INFO L93 Difference]: Finished difference Result 2942 states and 8057 transitions. [2022-01-18 02:08:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 02:08:37,928 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:37,931 INFO L225 Difference]: With dead ends: 2942 [2022-01-18 02:08:37,931 INFO L226 Difference]: Without dead ends: 2846 [2022-01-18 02:08:37,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=811, Invalid=3881, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 02:08:37,932 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 502 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:37,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 2707 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-01-18 02:08:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1932. [2022-01-18 02:08:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.809943034697048) internal successors, (5426), 1931 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5426 transitions. [2022-01-18 02:08:37,982 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5426 transitions. Word has length 72 [2022-01-18 02:08:37,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:37,983 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5426 transitions. [2022-01-18 02:08:37,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5426 transitions. [2022-01-18 02:08:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:37,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:37,985 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] [2022-01-18 02:08:38,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:38,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-01-18 02:08:38,199 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash -285231161, now seen corresponding path program 101 times [2022-01-18 02:08:38,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:38,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309461508] [2022-01-18 02:08:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:38,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:38,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:38,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309461508] [2022-01-18 02:08:38,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309461508] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:38,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646449391] [2022-01-18 02:08:38,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:08:38,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:38,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:38,374 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:38,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-01-18 02:08:38,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:08:38,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:38,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:08:38,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:38,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:39,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646449391] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:39,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:39,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 40 [2022-01-18 02:08:39,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299703165] [2022-01-18 02:08:39,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:39,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:08:39,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:08:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1336, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:08:39,383 INFO L87 Difference]: Start difference. First operand 1932 states and 5426 transitions. Second operand has 40 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:41,060 INFO L93 Difference]: Finished difference Result 3115 states and 8450 transitions. [2022-01-18 02:08:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:08:41,060 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:41,064 INFO L225 Difference]: With dead ends: 3115 [2022-01-18 02:08:41,064 INFO L226 Difference]: Without dead ends: 2908 [2022-01-18 02:08:41,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2162 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1199, Invalid=6283, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 02:08:41,065 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 760 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:41,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2846 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:08:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2022-01-18 02:08:41,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1952. [2022-01-18 02:08:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 2.8113787801127628) internal successors, (5485), 1951 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 5485 transitions. [2022-01-18 02:08:41,114 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 5485 transitions. Word has length 72 [2022-01-18 02:08:41,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:41,114 INFO L470 AbstractCegarLoop]: Abstraction has 1952 states and 5485 transitions. [2022-01-18 02:08:41,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 5485 transitions. [2022-01-18 02:08:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:41,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:41,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:41,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:41,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-01-18 02:08:41,323 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:41,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:41,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1904803417, now seen corresponding path program 102 times [2022-01-18 02:08:41,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:41,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554472938] [2022-01-18 02:08:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:41,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:41,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:41,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554472938] [2022-01-18 02:08:41,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554472938] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:41,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843220462] [2022-01-18 02:08:41,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:08:41,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:41,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:41,481 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:41,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-01-18 02:08:41,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:08:41,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:41,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:41,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:41,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:42,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843220462] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:42,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:42,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:42,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173203004] [2022-01-18 02:08:42,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:42,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:42,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:42,136 INFO L87 Difference]: Start difference. First operand 1952 states and 5485 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:44,219 INFO L93 Difference]: Finished difference Result 3429 states and 9190 transitions. [2022-01-18 02:08:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 02:08:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:44,224 INFO L225 Difference]: With dead ends: 3429 [2022-01-18 02:08:44,224 INFO L226 Difference]: Without dead ends: 3267 [2022-01-18 02:08:44,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1386, Invalid=6624, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 02:08:44,225 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 803 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:44,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 2651 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:08:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2022-01-18 02:08:44,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 1952. [2022-01-18 02:08:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 2.813429010763711) internal successors, (5489), 1951 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 5489 transitions. [2022-01-18 02:08:44,275 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 5489 transitions. Word has length 72 [2022-01-18 02:08:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:44,275 INFO L470 AbstractCegarLoop]: Abstraction has 1952 states and 5489 transitions. [2022-01-18 02:08:44,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 5489 transitions. [2022-01-18 02:08:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:44,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:44,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:44,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:44,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:44,482 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1363278033, now seen corresponding path program 103 times [2022-01-18 02:08:44,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:44,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215732121] [2022-01-18 02:08:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:44,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:44,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:44,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215732121] [2022-01-18 02:08:44,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215732121] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:44,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811512471] [2022-01-18 02:08:44,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:08:44,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:44,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:44,683 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:44,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-01-18 02:08:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:44,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:44,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:45,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:45,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811512471] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:45,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:45,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:08:45,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155545089] [2022-01-18 02:08:45,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:45,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:08:45,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:45,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:08:45,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:08:45,321 INFO L87 Difference]: Start difference. First operand 1952 states and 5489 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:46,270 INFO L93 Difference]: Finished difference Result 2869 states and 7785 transitions. [2022-01-18 02:08:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:08:46,271 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:46,274 INFO L225 Difference]: With dead ends: 2869 [2022-01-18 02:08:46,274 INFO L226 Difference]: Without dead ends: 2818 [2022-01-18 02:08:46,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=702, Invalid=3080, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 02:08:46,275 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 539 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:46,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2376 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:08:46,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-01-18 02:08:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1924. [2022-01-18 02:08:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 2.812272490899636) internal successors, (5408), 1923 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5408 transitions. [2022-01-18 02:08:46,296 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5408 transitions. Word has length 72 [2022-01-18 02:08:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:46,296 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 5408 transitions. [2022-01-18 02:08:46,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5408 transitions. [2022-01-18 02:08:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:46,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:46,299 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] [2022-01-18 02:08:46,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:46,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:46,512 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1167047719, now seen corresponding path program 104 times [2022-01-18 02:08:46,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:46,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469717807] [2022-01-18 02:08:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:46,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:46,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:46,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469717807] [2022-01-18 02:08:46,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469717807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:46,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093329176] [2022-01-18 02:08:46,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:08:46,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:46,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:46,759 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:46,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-01-18 02:08:46,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:08:46,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:46,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:46,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:47,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:47,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093329176] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:47,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:47,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:08:47,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547341777] [2022-01-18 02:08:47,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:47,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:08:47,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:08:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:08:47,685 INFO L87 Difference]: Start difference. First operand 1924 states and 5408 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:48,952 INFO L93 Difference]: Finished difference Result 2978 states and 8078 transitions. [2022-01-18 02:08:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 02:08:48,952 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:48,956 INFO L225 Difference]: With dead ends: 2978 [2022-01-18 02:08:48,956 INFO L226 Difference]: Without dead ends: 2876 [2022-01-18 02:08:48,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=691, Invalid=4279, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 02:08:48,957 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 556 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:48,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 3085 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:08:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2022-01-18 02:08:48,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2000. [2022-01-18 02:08:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.8159079539769887) internal successors, (5629), 1999 states have internal predecessors, (5629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5629 transitions. [2022-01-18 02:08:48,984 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5629 transitions. Word has length 72 [2022-01-18 02:08:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:48,984 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5629 transitions. [2022-01-18 02:08:48,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5629 transitions. [2022-01-18 02:08:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:48,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:48,986 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] [2022-01-18 02:08:49,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:49,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:49,203 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:49,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1468321395, now seen corresponding path program 105 times [2022-01-18 02:08:49,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:49,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060478806] [2022-01-18 02:08:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:49,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:49,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:49,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060478806] [2022-01-18 02:08:49,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060478806] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:49,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914665186] [2022-01-18 02:08:49,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:08:49,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:49,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:49,344 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:49,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-01-18 02:08:49,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:08:49,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:49,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:49,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:49,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:50,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914665186] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:50,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:50,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:08:50,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442850902] [2022-01-18 02:08:50,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:50,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:08:50,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:08:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:08:50,076 INFO L87 Difference]: Start difference. First operand 2000 states and 5629 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:51,900 INFO L93 Difference]: Finished difference Result 3391 states and 9064 transitions. [2022-01-18 02:08:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 02:08:51,900 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:51,906 INFO L225 Difference]: With dead ends: 3391 [2022-01-18 02:08:51,906 INFO L226 Difference]: Without dead ends: 3289 [2022-01-18 02:08:51,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1193, Invalid=6639, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 02:08:51,907 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 863 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:51,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 2881 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2022-01-18 02:08:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2000. [2022-01-18 02:08:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.8139069534767382) internal successors, (5625), 1999 states have internal predecessors, (5625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5625 transitions. [2022-01-18 02:08:51,938 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5625 transitions. Word has length 72 [2022-01-18 02:08:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:51,938 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5625 transitions. [2022-01-18 02:08:51,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5625 transitions. [2022-01-18 02:08:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:51,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:51,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:51,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:52,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:52,151 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:52,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash -34873087, now seen corresponding path program 106 times [2022-01-18 02:08:52,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:52,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549959911] [2022-01-18 02:08:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:52,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:52,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:52,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549959911] [2022-01-18 02:08:52,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549959911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:52,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027945283] [2022-01-18 02:08:52,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:08:52,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:52,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:52,315 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:52,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-01-18 02:08:52,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:08:52,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:52,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:52,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:52,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:53,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027945283] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:53,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:53,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:08:53,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953420563] [2022-01-18 02:08:53,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:53,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:08:53,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:53,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:08:53,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:08:53,133 INFO L87 Difference]: Start difference. First operand 2000 states and 5625 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:54,749 INFO L93 Difference]: Finished difference Result 3215 states and 8719 transitions. [2022-01-18 02:08:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 02:08:54,750 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:54,755 INFO L225 Difference]: With dead ends: 3215 [2022-01-18 02:08:54,756 INFO L226 Difference]: Without dead ends: 3083 [2022-01-18 02:08:54,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=5221, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:08:54,757 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 646 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:54,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 2826 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2022-01-18 02:08:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 2052. [2022-01-18 02:08:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8142369575816675) internal successors, (5772), 2051 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5772 transitions. [2022-01-18 02:08:54,793 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5772 transitions. Word has length 72 [2022-01-18 02:08:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:54,793 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5772 transitions. [2022-01-18 02:08:54,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5772 transitions. [2022-01-18 02:08:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:54,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:54,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:54,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:55,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable163 [2022-01-18 02:08:55,000 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1764192065, now seen corresponding path program 107 times [2022-01-18 02:08:55,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151695396] [2022-01-18 02:08:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:55,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:55,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:55,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151695396] [2022-01-18 02:08:55,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151695396] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:55,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136720568] [2022-01-18 02:08:55,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:08:55,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:55,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:55,231 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:55,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-01-18 02:08:55,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:08:55,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:55,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:08:55,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:55,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:56,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136720568] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:56,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:56,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:08:56,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108121269] [2022-01-18 02:08:56,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:56,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:08:56,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:08:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1403, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:08:56,184 INFO L87 Difference]: Start difference. First operand 2052 states and 5772 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:08:57,331 INFO L93 Difference]: Finished difference Result 2795 states and 7671 transitions. [2022-01-18 02:08:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 02:08:57,331 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:08:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:08:57,335 INFO L225 Difference]: With dead ends: 2795 [2022-01-18 02:08:57,335 INFO L226 Difference]: Without dead ends: 2699 [2022-01-18 02:08:57,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=784, Invalid=4186, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 02:08:57,336 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 501 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:08:57,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 2873 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:08:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2022-01-18 02:08:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2060. [2022-01-18 02:08:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 2.8139873725109275) internal successors, (5794), 2059 states have internal predecessors, (5794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 5794 transitions. [2022-01-18 02:08:57,361 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 5794 transitions. Word has length 72 [2022-01-18 02:08:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:08:57,361 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 5794 transitions. [2022-01-18 02:08:57,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:08:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 5794 transitions. [2022-01-18 02:08:57,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:08:57,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:08:57,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:08:57,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-01-18 02:08:57,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:57,583 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:08:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:08:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 144619809, now seen corresponding path program 108 times [2022-01-18 02:08:57,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:08:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803886888] [2022-01-18 02:08:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:08:57,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:08:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:08:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:57,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:08:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803886888] [2022-01-18 02:08:57,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803886888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:08:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512338680] [2022-01-18 02:08:57,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:08:57,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:08:57,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:08:57,776 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:08:57,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-01-18 02:08:57,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:08:57,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:08:57,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:08:57,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:08:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:58,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:08:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:08:58,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512338680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:08:58,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:08:58,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:08:58,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44266346] [2022-01-18 02:08:58,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:08:58,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:08:58,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:08:58,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:08:58,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:08:58,546 INFO L87 Difference]: Start difference. First operand 2060 states and 5794 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:01,409 INFO L93 Difference]: Finished difference Result 3606 states and 9691 transitions. [2022-01-18 02:09:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 02:09:01,409 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:01,415 INFO L225 Difference]: With dead ends: 3606 [2022-01-18 02:09:01,415 INFO L226 Difference]: Without dead ends: 3459 [2022-01-18 02:09:01,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2781 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1383, Invalid=8319, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 02:09:01,417 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1085 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:01,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 2806 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:09:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2022-01-18 02:09:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 2080. [2022-01-18 02:09:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2079 states have (on average 2.819143819143819) internal successors, (5861), 2079 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 5861 transitions. [2022-01-18 02:09:01,445 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 5861 transitions. Word has length 72 [2022-01-18 02:09:01,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:01,445 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 5861 transitions. [2022-01-18 02:09:01,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 5861 transitions. [2022-01-18 02:09:01,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:01,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:01,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:01,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:01,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:01,667 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:01,667 INFO L85 PathProgramCache]: Analyzing trace with hash -882266037, now seen corresponding path program 109 times [2022-01-18 02:09:01,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:01,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800504733] [2022-01-18 02:09:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:01,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:02,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:02,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800504733] [2022-01-18 02:09:02,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800504733] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:02,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708088447] [2022-01-18 02:09:02,008 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:09:02,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:02,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:02,009 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:02,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-01-18 02:09:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:02,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:02,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:02,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:03,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708088447] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:03,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:03,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:03,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430611549] [2022-01-18 02:09:03,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:03,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:03,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:03,054 INFO L87 Difference]: Start difference. First operand 2080 states and 5861 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:05,417 INFO L93 Difference]: Finished difference Result 3431 states and 9246 transitions. [2022-01-18 02:09:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 02:09:05,417 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:05,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:05,422 INFO L225 Difference]: With dead ends: 3431 [2022-01-18 02:09:05,422 INFO L226 Difference]: Without dead ends: 3329 [2022-01-18 02:09:05,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2014 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1079, Invalid=6231, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 02:09:05,423 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 811 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:05,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 3163 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:09:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2022-01-18 02:09:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 2052. [2022-01-18 02:09:05,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.818137493905412) internal successors, (5780), 2051 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5780 transitions. [2022-01-18 02:09:05,447 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5780 transitions. Word has length 72 [2022-01-18 02:09:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:05,448 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5780 transitions. [2022-01-18 02:09:05,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5780 transitions. [2022-01-18 02:09:05,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:05,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:05,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:05,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:05,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-01-18 02:09:05,652 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash 855638743, now seen corresponding path program 110 times [2022-01-18 02:09:05,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:05,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892907484] [2022-01-18 02:09:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:05,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:05,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:05,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892907484] [2022-01-18 02:09:05,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892907484] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:05,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487125306] [2022-01-18 02:09:05,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:09:05,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:05,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:05,830 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:05,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-01-18 02:09:05,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:09:05,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:05,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:05,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:06,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:06,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487125306] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:06,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:06,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:06,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584930487] [2022-01-18 02:09:06,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:06,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:06,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:06,689 INFO L87 Difference]: Start difference. First operand 2052 states and 5780 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:08,935 INFO L93 Difference]: Finished difference Result 3391 states and 9214 transitions. [2022-01-18 02:09:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 02:09:08,936 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:08,941 INFO L225 Difference]: With dead ends: 3391 [2022-01-18 02:09:08,941 INFO L226 Difference]: Without dead ends: 3184 [2022-01-18 02:09:08,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1071, Invalid=6761, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 02:09:08,942 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 633 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:08,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 3288 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:09:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2022-01-18 02:09:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2092. [2022-01-18 02:09:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 2.8225729316116692) internal successors, (5902), 2091 states have internal predecessors, (5902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 5902 transitions. [2022-01-18 02:09:08,967 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 5902 transitions. Word has length 72 [2022-01-18 02:09:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:08,967 INFO L470 AbstractCegarLoop]: Abstraction has 2092 states and 5902 transitions. [2022-01-18 02:09:08,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 5902 transitions. [2022-01-18 02:09:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:08,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:08,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:08,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:09,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-01-18 02:09:09,179 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash -763933513, now seen corresponding path program 111 times [2022-01-18 02:09:09,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:09,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362711752] [2022-01-18 02:09:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:09,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:09,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:09,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362711752] [2022-01-18 02:09:09,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362711752] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:09,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316992405] [2022-01-18 02:09:09,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:09:09,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:09,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:09,416 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:09,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-01-18 02:09:09,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:09:09,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:09,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:09,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:10,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:10,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316992405] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:10,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:10,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:10,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378306935] [2022-01-18 02:09:10,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:10,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:10,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:10,431 INFO L87 Difference]: Start difference. First operand 2092 states and 5902 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:13,442 INFO L93 Difference]: Finished difference Result 3944 states and 10549 transitions. [2022-01-18 02:09:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 02:09:13,443 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:13,448 INFO L225 Difference]: With dead ends: 3944 [2022-01-18 02:09:13,448 INFO L226 Difference]: Without dead ends: 3722 [2022-01-18 02:09:13,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4092 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1864, Invalid=11018, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 02:09:13,449 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1047 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:13,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 3090 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:09:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2022-01-18 02:09:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 2100. [2022-01-18 02:09:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 2.8261076703191996) internal successors, (5932), 2099 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 5932 transitions. [2022-01-18 02:09:13,478 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 5932 transitions. Word has length 72 [2022-01-18 02:09:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:13,478 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 5932 transitions. [2022-01-18 02:09:13,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 5932 transitions. [2022-01-18 02:09:13,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:13,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:13,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:13,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:13,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-01-18 02:09:13,697 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1790819359, now seen corresponding path program 112 times [2022-01-18 02:09:13,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:13,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999687938] [2022-01-18 02:09:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:13,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:13,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:13,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999687938] [2022-01-18 02:09:13,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999687938] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:13,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758338139] [2022-01-18 02:09:13,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:09:13,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:13,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:13,952 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:13,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-01-18 02:09:14,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:09:14,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:14,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:14,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:14,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:15,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758338139] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:15,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:15,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:15,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922407599] [2022-01-18 02:09:15,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:15,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:15,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:15,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:15,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:15,030 INFO L87 Difference]: Start difference. First operand 2100 states and 5932 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:17,650 INFO L93 Difference]: Finished difference Result 3519 states and 9459 transitions. [2022-01-18 02:09:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:09:17,650 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:17,656 INFO L225 Difference]: With dead ends: 3519 [2022-01-18 02:09:17,656 INFO L226 Difference]: Without dead ends: 3417 [2022-01-18 02:09:17,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1306, Invalid=6884, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 02:09:17,657 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1026 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:17,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 2634 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:09:17,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2022-01-18 02:09:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 2052. [2022-01-18 02:09:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8220380302291566) internal successors, (5788), 2051 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5788 transitions. [2022-01-18 02:09:17,711 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5788 transitions. Word has length 72 [2022-01-18 02:09:17,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:17,711 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5788 transitions. [2022-01-18 02:09:17,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5788 transitions. [2022-01-18 02:09:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:17,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:17,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:17,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:17,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-01-18 02:09:17,935 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1370507071, now seen corresponding path program 113 times [2022-01-18 02:09:17,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:17,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408162425] [2022-01-18 02:09:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:17,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:18,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408162425] [2022-01-18 02:09:18,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408162425] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874216343] [2022-01-18 02:09:18,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:09:18,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:18,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:18,089 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:18,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-01-18 02:09:18,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:09:18,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:18,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:09:18,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:18,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:19,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874216343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:19,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:19,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:09:19,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396771647] [2022-01-18 02:09:19,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:19,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:09:19,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:09:19,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:09:19,091 INFO L87 Difference]: Start difference. First operand 2052 states and 5788 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:19,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:19,654 INFO L93 Difference]: Finished difference Result 2634 states and 7276 transitions. [2022-01-18 02:09:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 02:09:19,655 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:19,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:19,659 INFO L225 Difference]: With dead ends: 2634 [2022-01-18 02:09:19,659 INFO L226 Difference]: Without dead ends: 2508 [2022-01-18 02:09:19,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=562, Invalid=2744, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 02:09:19,660 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 461 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:19,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 2146 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:09:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2022-01-18 02:09:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2052. [2022-01-18 02:09:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8200877620672844) internal successors, (5784), 2051 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5784 transitions. [2022-01-18 02:09:19,689 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5784 transitions. Word has length 72 [2022-01-18 02:09:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:19,690 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5784 transitions. [2022-01-18 02:09:19,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:19,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5784 transitions. [2022-01-18 02:09:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:19,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:19,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:19,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:19,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-01-18 02:09:19,908 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:19,908 INFO L85 PathProgramCache]: Analyzing trace with hash -491516717, now seen corresponding path program 114 times [2022-01-18 02:09:19,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:19,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366565317] [2022-01-18 02:09:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:19,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:20,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:20,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366565317] [2022-01-18 02:09:20,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366565317] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:20,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618335630] [2022-01-18 02:09:20,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:09:20,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:20,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:20,157 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:20,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-01-18 02:09:20,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:09:20,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:20,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:20,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:20,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:20,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618335630] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:20,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:20,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:09:20,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034770529] [2022-01-18 02:09:20,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:20,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:09:20,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:20,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:09:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:09:20,876 INFO L87 Difference]: Start difference. First operand 2052 states and 5784 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:21,759 INFO L93 Difference]: Finished difference Result 2926 states and 8033 transitions. [2022-01-18 02:09:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:09:21,759 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:21,763 INFO L225 Difference]: With dead ends: 2926 [2022-01-18 02:09:21,763 INFO L226 Difference]: Without dead ends: 2845 [2022-01-18 02:09:21,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=674, Invalid=2748, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 02:09:21,763 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 389 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:21,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 2568 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:09:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2022-01-18 02:09:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2052. [2022-01-18 02:09:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.818137493905412) internal successors, (5780), 2051 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5780 transitions. [2022-01-18 02:09:21,787 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5780 transitions. Word has length 72 [2022-01-18 02:09:21,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:21,787 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5780 transitions. [2022-01-18 02:09:21,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5780 transitions. [2022-01-18 02:09:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:21,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:21,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:21,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:22,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-01-18 02:09:22,005 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:22,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash 612164819, now seen corresponding path program 115 times [2022-01-18 02:09:22,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:22,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021347297] [2022-01-18 02:09:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:22,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:22,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:22,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021347297] [2022-01-18 02:09:22,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021347297] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:22,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267000562] [2022-01-18 02:09:22,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:09:22,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:22,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:22,185 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:22,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-01-18 02:09:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:22,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:22,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:22,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:22,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267000562] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:22,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:22,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:09:22,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178471222] [2022-01-18 02:09:22,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:22,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:09:22,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:09:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:09:22,985 INFO L87 Difference]: Start difference. First operand 2052 states and 5780 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:24,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:24,234 INFO L93 Difference]: Finished difference Result 3024 states and 8291 transitions. [2022-01-18 02:09:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 02:09:24,234 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:24,239 INFO L225 Difference]: With dead ends: 3024 [2022-01-18 02:09:24,239 INFO L226 Difference]: Without dead ends: 2928 [2022-01-18 02:09:24,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=851, Invalid=3841, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 02:09:24,240 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 549 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:24,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 2273 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:09:24,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2022-01-18 02:09:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2048. [2022-01-18 02:09:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2047 states have (on average 2.8182706399609185) internal successors, (5769), 2047 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5769 transitions. [2022-01-18 02:09:24,270 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5769 transitions. Word has length 72 [2022-01-18 02:09:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:24,271 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 5769 transitions. [2022-01-18 02:09:24,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5769 transitions. [2022-01-18 02:09:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:24,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:24,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:24,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:24,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2022-01-18 02:09:24,487 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:24,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash -103842689, now seen corresponding path program 116 times [2022-01-18 02:09:24,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:24,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761853918] [2022-01-18 02:09:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:24,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:24,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761853918] [2022-01-18 02:09:24,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761853918] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015335363] [2022-01-18 02:09:24,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:09:24,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:24,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:24,712 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:24,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-01-18 02:09:24,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:09:24,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:24,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:24,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:25,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015335363] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:25,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:25,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:09:25,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559235087] [2022-01-18 02:09:25,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:25,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:09:25,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:09:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:09:25,710 INFO L87 Difference]: Start difference. First operand 2048 states and 5769 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:27,128 INFO L93 Difference]: Finished difference Result 3070 states and 8413 transitions. [2022-01-18 02:09:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 02:09:27,128 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:27,133 INFO L225 Difference]: With dead ends: 3070 [2022-01-18 02:09:27,133 INFO L226 Difference]: Without dead ends: 2974 [2022-01-18 02:09:27,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=807, Invalid=3885, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 02:09:27,134 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 473 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:27,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 2461 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:09:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2022-01-18 02:09:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2044. [2022-01-18 02:09:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 2.8184043073910914) internal successors, (5758), 2043 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 5758 transitions. [2022-01-18 02:09:27,169 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 5758 transitions. Word has length 72 [2022-01-18 02:09:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:27,169 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 5758 transitions. [2022-01-18 02:09:27,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 5758 transitions. [2022-01-18 02:09:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:27,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:27,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:27,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:27,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:27,395 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:27,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash -97794443, now seen corresponding path program 117 times [2022-01-18 02:09:27,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:27,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3040814] [2022-01-18 02:09:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:27,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:27,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:27,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3040814] [2022-01-18 02:09:27,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3040814] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:27,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477605294] [2022-01-18 02:09:27,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:09:27,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:27,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:27,606 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:27,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-01-18 02:09:27,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:09:27,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:27,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:27,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:28,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:28,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477605294] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:28,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:28,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:09:28,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294147371] [2022-01-18 02:09:28,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:28,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:09:28,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:28,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:09:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:09:28,248 INFO L87 Difference]: Start difference. First operand 2044 states and 5758 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:28,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:28,744 INFO L93 Difference]: Finished difference Result 2865 states and 7843 transitions. [2022-01-18 02:09:28,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 02:09:28,744 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:28,748 INFO L225 Difference]: With dead ends: 2865 [2022-01-18 02:09:28,748 INFO L226 Difference]: Without dead ends: 2754 [2022-01-18 02:09:28,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=2054, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 02:09:28,760 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 359 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:28,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2292 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:09:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-01-18 02:09:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2036. [2022-01-18 02:09:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2035 states have (on average 2.8186732186732186) internal successors, (5736), 2035 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 5736 transitions. [2022-01-18 02:09:28,786 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 5736 transitions. Word has length 72 [2022-01-18 02:09:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:28,786 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 5736 transitions. [2022-01-18 02:09:28,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 5736 transitions. [2022-01-18 02:09:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:28,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:28,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:28,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:28,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:28,990 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 865256109, now seen corresponding path program 118 times [2022-01-18 02:09:28,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:28,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725732952] [2022-01-18 02:09:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:28,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:29,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:29,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725732952] [2022-01-18 02:09:29,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725732952] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:29,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906956376] [2022-01-18 02:09:29,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:09:29,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:29,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:29,148 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:29,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-01-18 02:09:29,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:09:29,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:29,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:29,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:29,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:29,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906956376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:29,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:29,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:29,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20623829] [2022-01-18 02:09:29,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:29,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:29,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:29,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:29,836 INFO L87 Difference]: Start difference. First operand 2036 states and 5736 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:31,206 INFO L93 Difference]: Finished difference Result 3184 states and 8714 transitions. [2022-01-18 02:09:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 02:09:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:31,210 INFO L225 Difference]: With dead ends: 3184 [2022-01-18 02:09:31,210 INFO L226 Difference]: Without dead ends: 3052 [2022-01-18 02:09:31,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=887, Invalid=4965, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 02:09:31,211 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 584 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:31,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 2741 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:09:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2022-01-18 02:09:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2044. [2022-01-18 02:09:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 2.8144884973078805) internal successors, (5750), 2043 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 5750 transitions. [2022-01-18 02:09:31,238 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 5750 transitions. Word has length 72 [2022-01-18 02:09:31,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:31,238 INFO L470 AbstractCegarLoop]: Abstraction has 2044 states and 5750 transitions. [2022-01-18 02:09:31,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:31,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 5750 transitions. [2022-01-18 02:09:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:31,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:31,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:31,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:31,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:31,453 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:31,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:31,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1630646035, now seen corresponding path program 119 times [2022-01-18 02:09:31,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:31,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602135002] [2022-01-18 02:09:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:31,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:31,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:31,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602135002] [2022-01-18 02:09:31,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602135002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:31,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469673966] [2022-01-18 02:09:31,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:09:31,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:31,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:31,680 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:31,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-01-18 02:09:31,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:09:31,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:31,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:09:31,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:32,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:32,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469673966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:32,856 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:32,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:09:32,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610129138] [2022-01-18 02:09:32,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:32,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:09:32,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:09:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1404, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:09:32,857 INFO L87 Difference]: Start difference. First operand 2044 states and 5750 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:33,894 INFO L93 Difference]: Finished difference Result 2811 states and 7695 transitions. [2022-01-18 02:09:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:09:33,895 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:33,898 INFO L225 Difference]: With dead ends: 2811 [2022-01-18 02:09:33,898 INFO L226 Difference]: Without dead ends: 2715 [2022-01-18 02:09:33,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=801, Invalid=4311, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 02:09:33,899 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 543 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:33,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 2944 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:09:33,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2022-01-18 02:09:33,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2052. [2022-01-18 02:09:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8142369575816675) internal successors, (5772), 2051 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5772 transitions. [2022-01-18 02:09:33,922 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5772 transitions. Word has length 72 [2022-01-18 02:09:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:33,922 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5772 transitions. [2022-01-18 02:09:33,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5772 transitions. [2022-01-18 02:09:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:33,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:33,924 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] [2022-01-18 02:09:33,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2022-01-18 02:09:34,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:34,140 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:34,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1044749005, now seen corresponding path program 120 times [2022-01-18 02:09:34,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:34,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68266135] [2022-01-18 02:09:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:34,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:34,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:34,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68266135] [2022-01-18 02:09:34,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68266135] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:34,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794001804] [2022-01-18 02:09:34,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:09:34,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:34,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:34,313 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:34,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-01-18 02:09:34,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:09:34,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:34,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:34,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:34,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:35,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794001804] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:35,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:35,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:35,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546600814] [2022-01-18 02:09:35,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:35,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:35,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:35,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:35,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:35,237 INFO L87 Difference]: Start difference. First operand 2052 states and 5772 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:37,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:37,423 INFO L93 Difference]: Finished difference Result 3465 states and 9409 transitions. [2022-01-18 02:09:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:09:37,424 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:37,429 INFO L225 Difference]: With dead ends: 3465 [2022-01-18 02:09:37,429 INFO L226 Difference]: Without dead ends: 3318 [2022-01-18 02:09:37,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1203, Invalid=7539, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 02:09:37,430 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 683 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:37,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 3349 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:09:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2022-01-18 02:09:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 2032. [2022-01-18 02:09:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 2031 states have (on average 2.8148695224027573) internal successors, (5717), 2031 states have internal predecessors, (5717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 5717 transitions. [2022-01-18 02:09:37,457 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 5717 transitions. Word has length 72 [2022-01-18 02:09:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:37,457 INFO L470 AbstractCegarLoop]: Abstraction has 2032 states and 5717 transitions. [2022-01-18 02:09:37,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5717 transitions. [2022-01-18 02:09:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:37,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:37,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:37,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:37,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-01-18 02:09:37,672 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:37,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1043075461, now seen corresponding path program 121 times [2022-01-18 02:09:37,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:37,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39072944] [2022-01-18 02:09:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:37,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:37,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39072944] [2022-01-18 02:09:37,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39072944] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837152462] [2022-01-18 02:09:37,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:09:37,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:37,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:37,809 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:37,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-01-18 02:09:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:37,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:37,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:38,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:38,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837152462] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:38,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:38,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:38,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24145832] [2022-01-18 02:09:38,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:38,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:38,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:38,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:38,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:38,571 INFO L87 Difference]: Start difference. First operand 2032 states and 5717 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:39,349 INFO L93 Difference]: Finished difference Result 3010 states and 8183 transitions. [2022-01-18 02:09:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:09:39,349 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:39,354 INFO L225 Difference]: With dead ends: 3010 [2022-01-18 02:09:39,354 INFO L226 Difference]: Without dead ends: 2848 [2022-01-18 02:09:39,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=578, Invalid=3712, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 02:09:39,355 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 587 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:39,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 2252 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:09:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2022-01-18 02:09:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2040. [2022-01-18 02:09:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2039 states have (on average 2.8165767533104464) internal successors, (5743), 2039 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 5743 transitions. [2022-01-18 02:09:39,389 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 5743 transitions. Word has length 72 [2022-01-18 02:09:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:39,389 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 5743 transitions. [2022-01-18 02:09:39,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 5743 transitions. [2022-01-18 02:09:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:39,391 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:39,391 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] [2022-01-18 02:09:39,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:39,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:39,598 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash -463424235, now seen corresponding path program 122 times [2022-01-18 02:09:39,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:39,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131403974] [2022-01-18 02:09:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:39,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:39,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131403974] [2022-01-18 02:09:39,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131403974] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952879245] [2022-01-18 02:09:39,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:09:39,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:39,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:39,802 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:39,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-01-18 02:09:39,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:09:39,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:39,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:39,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:40,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:40,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952879245] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:40,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:40,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:40,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123606042] [2022-01-18 02:09:40,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:40,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:40,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:40,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:40,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:40,822 INFO L87 Difference]: Start difference. First operand 2040 states and 5743 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:42,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:42,710 INFO L93 Difference]: Finished difference Result 3600 states and 9724 transitions. [2022-01-18 02:09:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:09:42,711 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:42,716 INFO L225 Difference]: With dead ends: 3600 [2022-01-18 02:09:42,716 INFO L226 Difference]: Without dead ends: 3438 [2022-01-18 02:09:42,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2594 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1029, Invalid=7527, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 02:09:42,717 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 870 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:42,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 2486 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:09:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2022-01-18 02:09:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 2060. [2022-01-18 02:09:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 2.817872753763963) internal successors, (5802), 2059 states have internal predecessors, (5802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 5802 transitions. [2022-01-18 02:09:42,746 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 5802 transitions. Word has length 72 [2022-01-18 02:09:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:42,746 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 5802 transitions. [2022-01-18 02:09:42,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 5802 transitions. [2022-01-18 02:09:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:42,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:42,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:42,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2022-01-18 02:09:42,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-01-18 02:09:42,975 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2082996491, now seen corresponding path program 123 times [2022-01-18 02:09:42,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:42,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769422089] [2022-01-18 02:09:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:42,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:43,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:43,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769422089] [2022-01-18 02:09:43,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769422089] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:43,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48782869] [2022-01-18 02:09:43,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:09:43,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:43,158 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:43,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-01-18 02:09:43,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:09:43,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:43,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:43,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:43,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:43,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48782869] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:43,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:43,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:43,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783487618] [2022-01-18 02:09:43,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:43,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:43,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:43,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:43,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:43,902 INFO L87 Difference]: Start difference. First operand 2060 states and 5802 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:45,986 INFO L93 Difference]: Finished difference Result 3953 states and 10625 transitions. [2022-01-18 02:09:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 02:09:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:45,991 INFO L225 Difference]: With dead ends: 3953 [2022-01-18 02:09:45,992 INFO L226 Difference]: Without dead ends: 3821 [2022-01-18 02:09:45,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1502, Invalid=9210, Unknown=0, NotChecked=0, Total=10712 [2022-01-18 02:09:45,995 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1072 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:45,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2745 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:09:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2022-01-18 02:09:46,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 2048. [2022-01-18 02:09:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2047 states have (on average 2.814362481680508) internal successors, (5761), 2047 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5761 transitions. [2022-01-18 02:09:46,023 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5761 transitions. Word has length 72 [2022-01-18 02:09:46,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:46,023 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 5761 transitions. [2022-01-18 02:09:46,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:46,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5761 transitions. [2022-01-18 02:09:46,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:46,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:46,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:46,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-01-18 02:09:46,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2022-01-18 02:09:46,238 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:46,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:46,239 INFO L85 PathProgramCache]: Analyzing trace with hash -470377875, now seen corresponding path program 124 times [2022-01-18 02:09:46,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:46,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412110534] [2022-01-18 02:09:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:46,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:46,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:46,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412110534] [2022-01-18 02:09:46,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412110534] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:46,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3065024] [2022-01-18 02:09:46,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:09:46,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:46,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:46,455 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:46,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-01-18 02:09:46,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:09:46,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:46,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:46,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:46,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:47,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3065024] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:47,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:47,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:09:47,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384994584] [2022-01-18 02:09:47,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:47,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:09:47,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:47,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:09:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:09:47,404 INFO L87 Difference]: Start difference. First operand 2048 states and 5761 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:48,399 INFO L93 Difference]: Finished difference Result 2766 states and 7551 transitions. [2022-01-18 02:09:48,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:09:48,399 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:48,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:48,402 INFO L225 Difference]: With dead ends: 2766 [2022-01-18 02:09:48,402 INFO L226 Difference]: Without dead ends: 2589 [2022-01-18 02:09:48,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=474, Invalid=3308, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 02:09:48,403 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 552 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:48,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 2278 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:09:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2022-01-18 02:09:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2048. [2022-01-18 02:09:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2047 states have (on average 2.812408402540303) internal successors, (5757), 2047 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5757 transitions. [2022-01-18 02:09:48,435 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5757 transitions. Word has length 72 [2022-01-18 02:09:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:48,435 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 5757 transitions. [2022-01-18 02:09:48,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 36 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5757 transitions. [2022-01-18 02:09:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:48,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:48,438 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] [2022-01-18 02:09:48,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:48,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:48,654 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash 6817613, now seen corresponding path program 125 times [2022-01-18 02:09:48,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:48,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829036031] [2022-01-18 02:09:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:48,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:48,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829036031] [2022-01-18 02:09:48,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829036031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844409148] [2022-01-18 02:09:48,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:09:48,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:48,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:48,820 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:48,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-01-18 02:09:48,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:09:48,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:48,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:48,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:49,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:49,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844409148] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:49,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:49,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:09:49,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639626537] [2022-01-18 02:09:49,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:49,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:09:49,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:09:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1154, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:09:49,534 INFO L87 Difference]: Start difference. First operand 2048 states and 5757 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:50,288 INFO L93 Difference]: Finished difference Result 2978 states and 8093 transitions. [2022-01-18 02:09:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:09:50,289 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:50,292 INFO L225 Difference]: With dead ends: 2978 [2022-01-18 02:09:50,292 INFO L226 Difference]: Without dead ends: 2927 [2022-01-18 02:09:50,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=625, Invalid=3281, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 02:09:50,295 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 477 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:50,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 2244 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:09:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2022-01-18 02:09:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2068. [2022-01-18 02:09:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2067 states have (on average 2.813739719400097) internal successors, (5816), 2067 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 5816 transitions. [2022-01-18 02:09:50,358 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 5816 transitions. Word has length 72 [2022-01-18 02:09:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:50,358 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 5816 transitions. [2022-01-18 02:09:50,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 5816 transitions. [2022-01-18 02:09:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:50,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:50,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:50,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2022-01-18 02:09:50,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:50,576 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:50,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash -464374085, now seen corresponding path program 126 times [2022-01-18 02:09:50,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:50,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435768143] [2022-01-18 02:09:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:50,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:50,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435768143] [2022-01-18 02:09:50,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435768143] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910733773] [2022-01-18 02:09:50,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:09:50,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:50,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:50,815 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:50,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-01-18 02:09:50,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:09:50,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:50,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:50,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:51,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:51,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910733773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:51,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:51,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:09:51,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434292906] [2022-01-18 02:09:51,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:51,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:09:51,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:51,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:09:51,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:09:51,592 INFO L87 Difference]: Start difference. First operand 2068 states and 5816 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:53,059 INFO L93 Difference]: Finished difference Result 3186 states and 8649 transitions. [2022-01-18 02:09:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:09:53,059 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:53,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:53,065 INFO L225 Difference]: With dead ends: 3186 [2022-01-18 02:09:53,065 INFO L226 Difference]: Without dead ends: 3135 [2022-01-18 02:09:53,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1118, Invalid=5854, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 02:09:53,066 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 521 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:53,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 3023 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:09:53,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-01-18 02:09:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2084. [2022-01-18 02:09:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 2.815170427268363) internal successors, (5864), 2083 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 5864 transitions. [2022-01-18 02:09:53,097 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 5864 transitions. Word has length 72 [2022-01-18 02:09:53,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:53,097 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 5864 transitions. [2022-01-18 02:09:53,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:53,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 5864 transitions. [2022-01-18 02:09:53,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:53,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:53,099 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] [2022-01-18 02:09:53,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Ended with exit code 0 [2022-01-18 02:09:53,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:53,315 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:53,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash -765647761, now seen corresponding path program 127 times [2022-01-18 02:09:53,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:53,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772335064] [2022-01-18 02:09:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:53,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:53,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:53,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772335064] [2022-01-18 02:09:53,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772335064] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:53,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369940915] [2022-01-18 02:09:53,581 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:09:53,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:53,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:53,582 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:53,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-01-18 02:09:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:53,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:53,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:54,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:54,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369940915] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:54,656 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:54,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:09:54,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021860746] [2022-01-18 02:09:54,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:54,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:09:54,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:54,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:09:54,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:09:54,657 INFO L87 Difference]: Start difference. First operand 2084 states and 5864 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:57,120 INFO L93 Difference]: Finished difference Result 3367 states and 9106 transitions. [2022-01-18 02:09:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 02:09:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:57,124 INFO L225 Difference]: With dead ends: 3367 [2022-01-18 02:09:57,124 INFO L226 Difference]: Without dead ends: 3316 [2022-01-18 02:09:57,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2417 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1541, Invalid=7015, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 02:09:57,129 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 712 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:57,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 2944 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:09:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2022-01-18 02:09:57,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 2100. [2022-01-18 02:09:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 2.8222963315864695) internal successors, (5924), 2099 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 5924 transitions. [2022-01-18 02:09:57,183 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 5924 transitions. Word has length 72 [2022-01-18 02:09:57,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:57,183 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 5924 transitions. [2022-01-18 02:09:57,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:57,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 5924 transitions. [2022-01-18 02:09:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:57,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:57,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:57,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2022-01-18 02:09:57,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:57,408 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:09:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:09:57,408 INFO L85 PathProgramCache]: Analyzing trace with hash 667800547, now seen corresponding path program 128 times [2022-01-18 02:09:57,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:09:57,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467128534] [2022-01-18 02:09:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:09:57,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:09:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:09:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:57,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:09:57,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467128534] [2022-01-18 02:09:57,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467128534] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:09:57,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402088482] [2022-01-18 02:09:57,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:09:57,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:09:57,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:09:57,688 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:09:57,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-01-18 02:09:57,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:09:57,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:09:57,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:09:57,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:09:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:58,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:09:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:09:58,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402088482] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:09:58,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:09:58,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:09:58,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702017170] [2022-01-18 02:09:58,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:09:58,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:09:58,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:09:58,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:09:58,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:09:58,731 INFO L87 Difference]: Start difference. First operand 2100 states and 5924 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:59,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:09:59,946 INFO L93 Difference]: Finished difference Result 3033 states and 8321 transitions. [2022-01-18 02:09:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:09:59,947 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:09:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:09:59,950 INFO L225 Difference]: With dead ends: 3033 [2022-01-18 02:09:59,951 INFO L226 Difference]: Without dead ends: 2952 [2022-01-18 02:09:59,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=693, Invalid=3089, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 02:09:59,951 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 489 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:09:59,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 2365 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:09:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-01-18 02:09:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2068. [2022-01-18 02:09:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2067 states have (on average 2.811804547653604) internal successors, (5812), 2067 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 5812 transitions. [2022-01-18 02:09:59,975 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 5812 transitions. Word has length 72 [2022-01-18 02:09:59,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:09:59,975 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 5812 transitions. [2022-01-18 02:09:59,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:09:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 5812 transitions. [2022-01-18 02:09:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:09:59,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:09:59,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:09:59,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:00,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:00,194 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash 338033775, now seen corresponding path program 129 times [2022-01-18 02:10:00,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:00,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52568645] [2022-01-18 02:10:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:00,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:00,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:00,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52568645] [2022-01-18 02:10:00,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52568645] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:00,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887060317] [2022-01-18 02:10:00,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:10:00,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:00,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:00,368 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:00,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-01-18 02:10:00,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:10:00,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:00,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:00,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:01,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:01,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887060317] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:01,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:01,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:01,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410403182] [2022-01-18 02:10:01,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:01,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:01,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:01,440 INFO L87 Difference]: Start difference. First operand 2068 states and 5812 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:02,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:02,555 INFO L93 Difference]: Finished difference Result 3089 states and 8374 transitions. [2022-01-18 02:10:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 02:10:02,555 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:02,561 INFO L225 Difference]: With dead ends: 3089 [2022-01-18 02:10:02,561 INFO L226 Difference]: Without dead ends: 3038 [2022-01-18 02:10:02,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=638, Invalid=3144, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 02:10:02,562 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 609 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:02,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 2861 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:10:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2022-01-18 02:10:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2096. [2022-01-18 02:10:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 2095 states have (on average 2.8205250596658713) internal successors, (5909), 2095 states have internal predecessors, (5909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 5909 transitions. [2022-01-18 02:10:02,596 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 5909 transitions. Word has length 72 [2022-01-18 02:10:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:02,596 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 5909 transitions. [2022-01-18 02:10:02,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:02,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 5909 transitions. [2022-01-18 02:10:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:02,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:02,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:02,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:02,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:02,803 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:02,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:02,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1771482083, now seen corresponding path program 130 times [2022-01-18 02:10:02,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:02,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741898927] [2022-01-18 02:10:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:02,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:03,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:03,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741898927] [2022-01-18 02:10:03,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741898927] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:03,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535350595] [2022-01-18 02:10:03,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:10:03,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:03,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:03,041 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:03,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-01-18 02:10:03,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:10:03,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:03,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:03,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:03,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:03,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535350595] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:03,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:03,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:03,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747642022] [2022-01-18 02:10:03,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:03,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:03,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:03,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1154, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:03,820 INFO L87 Difference]: Start difference. First operand 2096 states and 5909 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:05,084 INFO L93 Difference]: Finished difference Result 3107 states and 8509 transitions. [2022-01-18 02:10:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 02:10:05,084 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:05,088 INFO L225 Difference]: With dead ends: 3107 [2022-01-18 02:10:05,089 INFO L226 Difference]: Without dead ends: 3011 [2022-01-18 02:10:05,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=871, Invalid=4241, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 02:10:05,089 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 606 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:05,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 2592 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:10:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2022-01-18 02:10:05,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2064. [2022-01-18 02:10:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2063 states have (on average 2.8119243819680078) internal successors, (5801), 2063 states have internal predecessors, (5801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 5801 transitions. [2022-01-18 02:10:05,116 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 5801 transitions. Word has length 72 [2022-01-18 02:10:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:05,116 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 5801 transitions. [2022-01-18 02:10:05,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 5801 transitions. [2022-01-18 02:10:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:05,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:05,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:05,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:05,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2022-01-18 02:10:05,337 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -377973733, now seen corresponding path program 131 times [2022-01-18 02:10:05,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600460406] [2022-01-18 02:10:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:05,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:05,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:05,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600460406] [2022-01-18 02:10:05,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600460406] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:05,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985254260] [2022-01-18 02:10:05,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:10:05,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:05,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:05,535 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:05,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-01-18 02:10:05,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:10:05,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:05,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:05,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:06,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:06,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985254260] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:06,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:06,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:06,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101556660] [2022-01-18 02:10:06,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:06,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:06,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:06,617 INFO L87 Difference]: Start difference. First operand 2064 states and 5801 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:07,822 INFO L93 Difference]: Finished difference Result 3159 states and 8558 transitions. [2022-01-18 02:10:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:10:07,822 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:07,827 INFO L225 Difference]: With dead ends: 3159 [2022-01-18 02:10:07,827 INFO L226 Difference]: Without dead ends: 3108 [2022-01-18 02:10:07,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=684, Invalid=3348, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 02:10:07,827 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 600 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:07,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 2692 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:10:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-01-18 02:10:07,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2092. [2022-01-18 02:10:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 2.8206599713055955) internal successors, (5898), 2091 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 5898 transitions. [2022-01-18 02:10:07,851 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 5898 transitions. Word has length 72 [2022-01-18 02:10:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:07,851 INFO L470 AbstractCegarLoop]: Abstraction has 2092 states and 5898 transitions. [2022-01-18 02:10:07,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 5898 transitions. [2022-01-18 02:10:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:07,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:07,854 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] [2022-01-18 02:10:07,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:08,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:08,061 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1055474575, now seen corresponding path program 132 times [2022-01-18 02:10:08,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:08,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247844696] [2022-01-18 02:10:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:08,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:08,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:08,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247844696] [2022-01-18 02:10:08,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247844696] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:08,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350207159] [2022-01-18 02:10:08,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:10:08,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:08,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:08,311 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:08,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-01-18 02:10:08,465 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:10:08,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:08,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:08,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:08,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:09,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350207159] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:09,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:09,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:09,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321851202] [2022-01-18 02:10:09,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:09,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:09,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:09,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:09,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1160, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:09,065 INFO L87 Difference]: Start difference. First operand 2092 states and 5898 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:10,958 INFO L93 Difference]: Finished difference Result 3169 states and 8675 transitions. [2022-01-18 02:10:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 02:10:10,958 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:10,962 INFO L225 Difference]: With dead ends: 3169 [2022-01-18 02:10:10,963 INFO L226 Difference]: Without dead ends: 3073 [2022-01-18 02:10:10,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=905, Invalid=4497, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 02:10:10,963 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 576 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:10,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 3307 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:10:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2022-01-18 02:10:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2064. [2022-01-18 02:10:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2063 states have (on average 2.8119243819680078) internal successors, (5801), 2063 states have internal predecessors, (5801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 5801 transitions. [2022-01-18 02:10:10,988 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 5801 transitions. Word has length 72 [2022-01-18 02:10:10,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:10,988 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 5801 transitions. [2022-01-18 02:10:10,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:10,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 5801 transitions. [2022-01-18 02:10:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:10,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:10,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:11,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:11,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-01-18 02:10:11,208 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1774215299, now seen corresponding path program 133 times [2022-01-18 02:10:11,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:11,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039245354] [2022-01-18 02:10:11,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:11,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:11,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:11,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039245354] [2022-01-18 02:10:11,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039245354] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:11,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068020610] [2022-01-18 02:10:11,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:10:11,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:11,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:11,380 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:11,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-01-18 02:10:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:11,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:11,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:11,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:12,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068020610] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:12,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:12,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:12,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977840467] [2022-01-18 02:10:12,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:12,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:12,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:12,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:12,282 INFO L87 Difference]: Start difference. First operand 2064 states and 5801 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:13,479 INFO L93 Difference]: Finished difference Result 3103 states and 8489 transitions. [2022-01-18 02:10:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 02:10:13,480 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:13,485 INFO L225 Difference]: With dead ends: 3103 [2022-01-18 02:10:13,485 INFO L226 Difference]: Without dead ends: 2992 [2022-01-18 02:10:13,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=796, Invalid=4460, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 02:10:13,486 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 598 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:13,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 2653 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:10:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2022-01-18 02:10:13,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2072. [2022-01-18 02:10:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 2071 states have (on average 2.8116851762433606) internal successors, (5823), 2071 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 5823 transitions. [2022-01-18 02:10:13,519 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 5823 transitions. Word has length 72 [2022-01-18 02:10:13,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:13,519 INFO L470 AbstractCegarLoop]: Abstraction has 2072 states and 5823 transitions. [2022-01-18 02:10:13,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:13,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 5823 transitions. [2022-01-18 02:10:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:13,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:13,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:13,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:13,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2022-01-18 02:10:13,735 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:13,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 154643043, now seen corresponding path program 134 times [2022-01-18 02:10:13,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:13,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036378517] [2022-01-18 02:10:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:13,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:13,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:13,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036378517] [2022-01-18 02:10:13,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036378517] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:13,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614506542] [2022-01-18 02:10:13,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:10:13,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:13,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:13,973 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:13,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2022-01-18 02:10:14,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:10:14,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:14,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:15,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614506542] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:15,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:15,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:15,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74104096] [2022-01-18 02:10:15,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:15,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:15,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:15,020 INFO L87 Difference]: Start difference. First operand 2072 states and 5823 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:16,885 INFO L93 Difference]: Finished difference Result 3236 states and 8820 transitions. [2022-01-18 02:10:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:10:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:16,891 INFO L225 Difference]: With dead ends: 3236 [2022-01-18 02:10:16,891 INFO L226 Difference]: Without dead ends: 3155 [2022-01-18 02:10:16,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1154, Invalid=5488, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:10:16,892 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 766 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:16,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2448 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:10:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2022-01-18 02:10:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 2080. [2022-01-18 02:10:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2079 states have (on average 2.8133718133718135) internal successors, (5849), 2079 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 5849 transitions. [2022-01-18 02:10:16,924 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 5849 transitions. Word has length 72 [2022-01-18 02:10:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:16,924 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 5849 transitions. [2022-01-18 02:10:16,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 5849 transitions. [2022-01-18 02:10:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:16,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:16,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:16,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:17,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:17,140 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash -872242803, now seen corresponding path program 135 times [2022-01-18 02:10:17,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:17,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533914053] [2022-01-18 02:10:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:17,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:17,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:17,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533914053] [2022-01-18 02:10:17,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533914053] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:17,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236824717] [2022-01-18 02:10:17,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:10:17,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:17,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:17,349 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:17,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2022-01-18 02:10:17,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:10:17,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:17,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:17,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:17,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:18,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236824717] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:18,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:18,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:18,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472287456] [2022-01-18 02:10:18,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:18,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:18,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:18,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:18,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:18,287 INFO L87 Difference]: Start difference. First operand 2080 states and 5849 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:19,446 INFO L93 Difference]: Finished difference Result 2990 states and 8158 transitions. [2022-01-18 02:10:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 02:10:19,446 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:19,451 INFO L225 Difference]: With dead ends: 2990 [2022-01-18 02:10:19,451 INFO L226 Difference]: Without dead ends: 2939 [2022-01-18 02:10:19,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=722, Invalid=3438, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 02:10:19,451 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 528 mSDsluCounter, 2511 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:19,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 2560 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:10:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-01-18 02:10:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2052. [2022-01-18 02:10:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.8122866894197953) internal successors, (5768), 2051 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5768 transitions. [2022-01-18 02:10:19,507 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5768 transitions. Word has length 72 [2022-01-18 02:10:19,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:19,507 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5768 transitions. [2022-01-18 02:10:19,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5768 transitions. [2022-01-18 02:10:19,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:19,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:19,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:19,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2022-01-18 02:10:19,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:19,710 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash 892398741, now seen corresponding path program 136 times [2022-01-18 02:10:19,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:19,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381672320] [2022-01-18 02:10:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:19,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:19,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:19,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381672320] [2022-01-18 02:10:19,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381672320] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:19,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547538905] [2022-01-18 02:10:19,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:10:19,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:19,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:19,852 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:19,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2022-01-18 02:10:20,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:10:20,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:20,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:20,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:20,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:20,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547538905] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:20,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:20,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:20,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234753420] [2022-01-18 02:10:20,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:20,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:20,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:20,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:20,838 INFO L87 Difference]: Start difference. First operand 2052 states and 5768 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:22,121 INFO L93 Difference]: Finished difference Result 2967 states and 8080 transitions. [2022-01-18 02:10:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 02:10:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:22,127 INFO L225 Difference]: With dead ends: 2967 [2022-01-18 02:10:22,127 INFO L226 Difference]: Without dead ends: 2916 [2022-01-18 02:10:22,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=634, Invalid=4196, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 02:10:22,128 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 497 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:22,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 2849 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:10:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2022-01-18 02:10:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2072. [2022-01-18 02:10:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 2071 states have (on average 2.8136166103331726) internal successors, (5827), 2071 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 5827 transitions. [2022-01-18 02:10:22,162 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 5827 transitions. Word has length 72 [2022-01-18 02:10:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:22,162 INFO L470 AbstractCegarLoop]: Abstraction has 2072 states and 5827 transitions. [2022-01-18 02:10:22,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 5827 transitions. [2022-01-18 02:10:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:22,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:22,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:22,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:22,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2022-01-18 02:10:22,383 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash 591125065, now seen corresponding path program 137 times [2022-01-18 02:10:22,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:22,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014664293] [2022-01-18 02:10:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:22,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:22,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:22,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014664293] [2022-01-18 02:10:22,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014664293] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:22,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889512571] [2022-01-18 02:10:22,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:10:22,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:22,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:22,552 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:22,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2022-01-18 02:10:22,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:10:22,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:22,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:22,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:23,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:23,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889512571] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:23,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:23,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:23,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935389308] [2022-01-18 02:10:23,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:23,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:23,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:23,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:23,405 INFO L87 Difference]: Start difference. First operand 2072 states and 5827 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:25,135 INFO L93 Difference]: Finished difference Result 3203 states and 8671 transitions. [2022-01-18 02:10:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:10:25,135 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:25,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:25,141 INFO L225 Difference]: With dead ends: 3203 [2022-01-18 02:10:25,141 INFO L226 Difference]: Without dead ends: 3152 [2022-01-18 02:10:25,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=947, Invalid=5373, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 02:10:25,142 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 616 mSDsluCounter, 3700 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:25,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 3715 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:10:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-01-18 02:10:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 2100. [2022-01-18 02:10:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 2.8203906622201047) internal successors, (5920), 2099 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 5920 transitions. [2022-01-18 02:10:25,180 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 5920 transitions. Word has length 72 [2022-01-18 02:10:25,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:25,180 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 5920 transitions. [2022-01-18 02:10:25,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 5920 transitions. [2022-01-18 02:10:25,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:25,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:25,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:25,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:25,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:25,386 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2024573373, now seen corresponding path program 138 times [2022-01-18 02:10:25,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:25,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733176796] [2022-01-18 02:10:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:25,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:25,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:25,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733176796] [2022-01-18 02:10:25,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733176796] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:25,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385416216] [2022-01-18 02:10:25,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:10:25,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:25,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:25,575 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:25,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2022-01-18 02:10:25,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:10:25,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:25,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:25,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:26,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:26,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385416216] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:26,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:26,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:26,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385495695] [2022-01-18 02:10:26,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:26,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:26,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:26,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:26,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1172, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:26,457 INFO L87 Difference]: Start difference. First operand 2100 states and 5920 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:28,037 INFO L93 Difference]: Finished difference Result 3507 states and 9558 transitions. [2022-01-18 02:10:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 02:10:28,037 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:28,042 INFO L225 Difference]: With dead ends: 3507 [2022-01-18 02:10:28,042 INFO L226 Difference]: Without dead ends: 3375 [2022-01-18 02:10:28,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=912, Invalid=5568, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 02:10:28,043 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 625 mSDsluCounter, 3201 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:28,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 3232 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:10:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-01-18 02:10:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 2108. [2022-01-18 02:10:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.8144280968201234) internal successors, (5930), 2107 states have internal predecessors, (5930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5930 transitions. [2022-01-18 02:10:28,105 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5930 transitions. Word has length 72 [2022-01-18 02:10:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:28,105 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5930 transitions. [2022-01-18 02:10:28,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5930 transitions. [2022-01-18 02:10:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:28,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:28,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:28,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:28,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:28,319 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:28,319 INFO L85 PathProgramCache]: Analyzing trace with hash -471328771, now seen corresponding path program 139 times [2022-01-18 02:10:28,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:28,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789007438] [2022-01-18 02:10:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:28,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:28,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:28,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789007438] [2022-01-18 02:10:28,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789007438] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:28,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890358131] [2022-01-18 02:10:28,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:10:28,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:28,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:28,532 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:28,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2022-01-18 02:10:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:28,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:28,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:28,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:29,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890358131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:29,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:29,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:29,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182250770] [2022-01-18 02:10:29,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:29,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:29,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:29,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:29,320 INFO L87 Difference]: Start difference. First operand 2108 states and 5930 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:31,137 INFO L93 Difference]: Finished difference Result 3208 states and 8744 transitions. [2022-01-18 02:10:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 02:10:31,137 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:31,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:31,141 INFO L225 Difference]: With dead ends: 3208 [2022-01-18 02:10:31,142 INFO L226 Difference]: Without dead ends: 3061 [2022-01-18 02:10:31,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=837, Invalid=6645, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 02:10:31,142 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 624 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 3662 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:31,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 3662 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:10:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2022-01-18 02:10:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 2132. [2022-01-18 02:10:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2131 states have (on average 2.8155795401220085) internal successors, (6000), 2131 states have internal predecessors, (6000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 6000 transitions. [2022-01-18 02:10:31,167 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 6000 transitions. Word has length 72 [2022-01-18 02:10:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:31,167 INFO L470 AbstractCegarLoop]: Abstraction has 2132 states and 6000 transitions. [2022-01-18 02:10:31,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 6000 transitions. [2022-01-18 02:10:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:31,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:31,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:31,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:31,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:31,378 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:31,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:31,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2090901027, now seen corresponding path program 140 times [2022-01-18 02:10:31,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:31,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503350493] [2022-01-18 02:10:31,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:31,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:31,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503350493] [2022-01-18 02:10:31,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503350493] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303204160] [2022-01-18 02:10:31,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:10:31,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:31,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:31,631 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:31,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2022-01-18 02:10:31,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:10:31,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:31,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:31,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:32,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:32,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303204160] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:32,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:32,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:32,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130493400] [2022-01-18 02:10:32,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:32,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:32,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:32,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:32,771 INFO L87 Difference]: Start difference. First operand 2132 states and 6000 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:35,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:35,384 INFO L93 Difference]: Finished difference Result 3808 states and 10309 transitions. [2022-01-18 02:10:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:10:35,384 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:35,389 INFO L225 Difference]: With dead ends: 3808 [2022-01-18 02:10:35,389 INFO L226 Difference]: Without dead ends: 3661 [2022-01-18 02:10:35,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2645 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1287, Invalid=8219, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 02:10:35,389 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 913 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 3399 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:35,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 3399 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:10:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2022-01-18 02:10:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 2128. [2022-01-18 02:10:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.8157028678890454) internal successors, (5989), 2127 states have internal predecessors, (5989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5989 transitions. [2022-01-18 02:10:35,416 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5989 transitions. Word has length 72 [2022-01-18 02:10:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:35,416 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5989 transitions. [2022-01-18 02:10:35,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5989 transitions. [2022-01-18 02:10:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:35,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:35,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:35,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:35,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:35,624 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1177180423, now seen corresponding path program 141 times [2022-01-18 02:10:35,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:35,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965849797] [2022-01-18 02:10:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:35,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:35,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:35,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965849797] [2022-01-18 02:10:35,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965849797] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:35,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377976021] [2022-01-18 02:10:35,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:10:35,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:35,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:35,822 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:35,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2022-01-18 02:10:35,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:10:35,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:35,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:35,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:36,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:36,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377976021] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:36,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:36,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:36,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106877046] [2022-01-18 02:10:36,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:36,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:36,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:36,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:36,770 INFO L87 Difference]: Start difference. First operand 2128 states and 5989 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:38,409 INFO L93 Difference]: Finished difference Result 3091 states and 8425 transitions. [2022-01-18 02:10:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 02:10:38,410 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:38,414 INFO L225 Difference]: With dead ends: 3091 [2022-01-18 02:10:38,414 INFO L226 Difference]: Without dead ends: 3040 [2022-01-18 02:10:38,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=742, Invalid=4370, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 02:10:38,414 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 510 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:38,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 3268 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:10:38,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2022-01-18 02:10:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2108. [2022-01-18 02:10:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.8144280968201234) internal successors, (5930), 2107 states have internal predecessors, (5930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5930 transitions. [2022-01-18 02:10:38,455 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5930 transitions. Word has length 72 [2022-01-18 02:10:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:38,455 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5930 transitions. [2022-01-18 02:10:38,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:38,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5930 transitions. [2022-01-18 02:10:38,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:38,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:38,458 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] [2022-01-18 02:10:38,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2022-01-18 02:10:38,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:38,669 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:38,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1379882093, now seen corresponding path program 142 times [2022-01-18 02:10:38,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:38,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240093935] [2022-01-18 02:10:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:38,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:38,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:38,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240093935] [2022-01-18 02:10:38,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240093935] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:38,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077192408] [2022-01-18 02:10:38,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:10:38,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:38,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:38,896 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:38,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2022-01-18 02:10:39,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:10:39,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:39,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:39,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:39,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:39,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077192408] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:39,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:39,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:39,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251022677] [2022-01-18 02:10:39,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:39,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:39,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:39,925 INFO L87 Difference]: Start difference. First operand 2108 states and 5930 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:42,409 INFO L93 Difference]: Finished difference Result 3551 states and 9642 transitions. [2022-01-18 02:10:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:10:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:42,414 INFO L225 Difference]: With dead ends: 3551 [2022-01-18 02:10:42,414 INFO L226 Difference]: Without dead ends: 3389 [2022-01-18 02:10:42,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1124, Invalid=7806, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 02:10:42,414 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 700 mSDsluCounter, 3670 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 3679 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:42,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 3679 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:10:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2022-01-18 02:10:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2140. [2022-01-18 02:10:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 2.8190743338008417) internal successors, (6030), 2139 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 6030 transitions. [2022-01-18 02:10:42,440 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 6030 transitions. Word has length 72 [2022-01-18 02:10:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:42,440 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 6030 transitions. [2022-01-18 02:10:42,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 6030 transitions. [2022-01-18 02:10:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:42,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:42,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:42,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Ended with exit code 0 [2022-01-18 02:10:42,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-01-18 02:10:42,646 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:42,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:42,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1295512947, now seen corresponding path program 143 times [2022-01-18 02:10:42,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:42,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988162481] [2022-01-18 02:10:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:42,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:42,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:42,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988162481] [2022-01-18 02:10:42,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988162481] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:42,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136885176] [2022-01-18 02:10:42,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:10:42,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:42,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:42,814 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:42,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2022-01-18 02:10:42,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:10:42,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:42,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:10:42,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:43,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:43,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136885176] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:43,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:43,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:10:43,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433888795] [2022-01-18 02:10:43,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:43,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:10:43,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:43,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:10:43,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:10:43,688 INFO L87 Difference]: Start difference. First operand 2140 states and 6030 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:45,247 INFO L93 Difference]: Finished difference Result 3287 states and 8986 transitions. [2022-01-18 02:10:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:10:45,247 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:45,252 INFO L225 Difference]: With dead ends: 3287 [2022-01-18 02:10:45,252 INFO L226 Difference]: Without dead ends: 3206 [2022-01-18 02:10:45,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1467, Invalid=6543, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 02:10:45,252 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 729 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:45,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 2939 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:10:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2022-01-18 02:10:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2160. [2022-01-18 02:10:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2159 states have (on average 2.8202871699861047) internal successors, (6089), 2159 states have internal predecessors, (6089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 6089 transitions. [2022-01-18 02:10:45,281 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 6089 transitions. Word has length 72 [2022-01-18 02:10:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:45,281 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 6089 transitions. [2022-01-18 02:10:45,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 6089 transitions. [2022-01-18 02:10:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:45,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:45,283 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] [2022-01-18 02:10:45,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Ended with exit code 0 [2022-01-18 02:10:45,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2022-01-18 02:10:45,484 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:45,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash 268627101, now seen corresponding path program 144 times [2022-01-18 02:10:45,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:45,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549322244] [2022-01-18 02:10:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:45,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:45,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:45,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549322244] [2022-01-18 02:10:45,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549322244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:45,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662719175] [2022-01-18 02:10:45,688 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:10:45,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:45,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:45,689 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:45,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2022-01-18 02:10:45,866 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:10:45,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:45,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:45,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:46,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:46,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662719175] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:46,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:46,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:46,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757052279] [2022-01-18 02:10:46,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:46,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:46,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1165, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:46,567 INFO L87 Difference]: Start difference. First operand 2160 states and 6089 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:48,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:48,263 INFO L93 Difference]: Finished difference Result 3185 states and 8650 transitions. [2022-01-18 02:10:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 02:10:48,264 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:48,268 INFO L225 Difference]: With dead ends: 3185 [2022-01-18 02:10:48,268 INFO L226 Difference]: Without dead ends: 3134 [2022-01-18 02:10:48,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=802, Invalid=4454, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 02:10:48,268 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 700 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:48,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 2908 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:10:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2022-01-18 02:10:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2144. [2022-01-18 02:10:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 2.8245450303313113) internal successors, (6053), 2143 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 6053 transitions. [2022-01-18 02:10:48,307 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 6053 transitions. Word has length 72 [2022-01-18 02:10:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:48,308 INFO L470 AbstractCegarLoop]: Abstraction has 2144 states and 6053 transitions. [2022-01-18 02:10:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 6053 transitions. [2022-01-18 02:10:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:48,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:48,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:48,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:48,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-01-18 02:10:48,526 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:48,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:48,526 INFO L85 PathProgramCache]: Analyzing trace with hash -923679227, now seen corresponding path program 145 times [2022-01-18 02:10:48,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:48,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733517016] [2022-01-18 02:10:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:48,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:48,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:48,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733517016] [2022-01-18 02:10:48,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733517016] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:48,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947821522] [2022-01-18 02:10:48,774 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:10:48,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:48,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:48,775 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:48,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2022-01-18 02:10:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:48,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:48,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:49,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:50,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947821522] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:50,097 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:50,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:50,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703113526] [2022-01-18 02:10:50,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:50,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:50,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:50,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:50,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:50,098 INFO L87 Difference]: Start difference. First operand 2144 states and 6053 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:52,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:52,954 INFO L93 Difference]: Finished difference Result 4494 states and 12053 transitions. [2022-01-18 02:10:52,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 02:10:52,954 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:52,962 INFO L225 Difference]: With dead ends: 4494 [2022-01-18 02:10:52,962 INFO L226 Difference]: Without dead ends: 4332 [2022-01-18 02:10:52,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3792 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1654, Invalid=10336, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 02:10:52,964 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1007 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:52,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 3216 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:10:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2022-01-18 02:10:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 2164. [2022-01-18 02:10:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2163 states have (on average 2.8257050392972722) internal successors, (6112), 2163 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 6112 transitions. [2022-01-18 02:10:53,011 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 6112 transitions. Word has length 72 [2022-01-18 02:10:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:53,011 INFO L470 AbstractCegarLoop]: Abstraction has 2164 states and 6112 transitions. [2022-01-18 02:10:53,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 6112 transitions. [2022-01-18 02:10:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:53,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:53,014 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] [2022-01-18 02:10:53,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-01-18 02:10:53,231 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:53,231 INFO L85 PathProgramCache]: Analyzing trace with hash -422348789, now seen corresponding path program 146 times [2022-01-18 02:10:53,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:53,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610939138] [2022-01-18 02:10:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:53,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:53,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:53,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610939138] [2022-01-18 02:10:53,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610939138] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:53,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076816712] [2022-01-18 02:10:53,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:10:53,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:53,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:53,407 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:53,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2022-01-18 02:10:53,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:10:53,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:53,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:53,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:54,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:54,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076816712] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:54,489 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:54,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:54,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961677782] [2022-01-18 02:10:54,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:54,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:54,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1149, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:54,490 INFO L87 Difference]: Start difference. First operand 2164 states and 6112 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:56,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:56,349 INFO L93 Difference]: Finished difference Result 4524 states and 12262 transitions. [2022-01-18 02:10:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 02:10:56,349 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:56,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:56,356 INFO L225 Difference]: With dead ends: 4524 [2022-01-18 02:10:56,356 INFO L226 Difference]: Without dead ends: 4422 [2022-01-18 02:10:56,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1111, Invalid=6199, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 02:10:56,356 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 841 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:56,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 3062 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:10:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-01-18 02:10:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 2148. [2022-01-18 02:10:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2147 states have (on average 2.824406148113647) internal successors, (6064), 2147 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:56,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 6064 transitions. [2022-01-18 02:10:56,387 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 6064 transitions. Word has length 72 [2022-01-18 02:10:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:56,387 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 6064 transitions. [2022-01-18 02:10:56,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 6064 transitions. [2022-01-18 02:10:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:56,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:56,390 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] [2022-01-18 02:10:56,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:56,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2022-01-18 02:10:56,603 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash 688939389, now seen corresponding path program 147 times [2022-01-18 02:10:56,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:56,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059459466] [2022-01-18 02:10:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:56,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:56,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:56,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059459466] [2022-01-18 02:10:56,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059459466] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:56,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43257703] [2022-01-18 02:10:56,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:10:56,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:56,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:56,758 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:56,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2022-01-18 02:10:56,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:10:56,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:56,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:10:56,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:57,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:57,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43257703] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:57,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:57,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:10:57,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295821700] [2022-01-18 02:10:57,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:57,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:10:57,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:57,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:10:57,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:10:57,852 INFO L87 Difference]: Start difference. First operand 2148 states and 6064 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:10:58,548 INFO L93 Difference]: Finished difference Result 2976 states and 8170 transitions. [2022-01-18 02:10:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 02:10:58,559 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:10:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:10:58,563 INFO L225 Difference]: With dead ends: 2976 [2022-01-18 02:10:58,563 INFO L226 Difference]: Without dead ends: 2850 [2022-01-18 02:10:58,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=605, Invalid=3055, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 02:10:58,564 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 619 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:10:58,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2820 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:10:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2022-01-18 02:10:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2148. [2022-01-18 02:10:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2147 states have (on average 2.822543083372147) internal successors, (6060), 2147 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 6060 transitions. [2022-01-18 02:10:58,591 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 6060 transitions. Word has length 72 [2022-01-18 02:10:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:10:58,591 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 6060 transitions. [2022-01-18 02:10:58,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:10:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 6060 transitions. [2022-01-18 02:10:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:10:58,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:10:58,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:10:58,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Forceful destruction successful, exit code 0 [2022-01-18 02:10:58,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:58,809 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:10:58,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:10:58,809 INFO L85 PathProgramCache]: Analyzing trace with hash -499663415, now seen corresponding path program 148 times [2022-01-18 02:10:58,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:10:58,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758104548] [2022-01-18 02:10:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:10:58,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:10:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:10:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:58,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:10:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758104548] [2022-01-18 02:10:58,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758104548] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:10:58,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753404904] [2022-01-18 02:10:58,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:10:58,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:10:58,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:10:58,966 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:10:58,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2022-01-18 02:10:59,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:10:59,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:10:59,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:10:59,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:10:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:59,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:10:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:10:59,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753404904] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:10:59,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:10:59,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:10:59,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735198150] [2022-01-18 02:10:59,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:10:59,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:10:59,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:10:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:10:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:10:59,831 INFO L87 Difference]: Start difference. First operand 2148 states and 6060 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:01,583 INFO L93 Difference]: Finished difference Result 3263 states and 8836 transitions. [2022-01-18 02:11:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:11:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:01,588 INFO L225 Difference]: With dead ends: 3263 [2022-01-18 02:11:01,588 INFO L226 Difference]: Without dead ends: 3161 [2022-01-18 02:11:01,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1739 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=799, Invalid=5843, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:11:01,588 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 594 mSDsluCounter, 3576 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:01,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 3615 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:11:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2022-01-18 02:11:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2188. [2022-01-18 02:11:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.8248742569730223) internal successors, (6178), 2187 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6178 transitions. [2022-01-18 02:11:01,613 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6178 transitions. Word has length 72 [2022-01-18 02:11:01,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:01,613 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6178 transitions. [2022-01-18 02:11:01,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:01,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6178 transitions. [2022-01-18 02:11:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:01,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:01,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:01,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:01,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2022-01-18 02:11:01,819 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash -800937091, now seen corresponding path program 149 times [2022-01-18 02:11:01,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:01,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428607506] [2022-01-18 02:11:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:01,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:02,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:02,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428607506] [2022-01-18 02:11:02,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428607506] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:02,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171333588] [2022-01-18 02:11:02,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:11:02,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:02,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:02,089 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:02,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2022-01-18 02:11:02,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:11:02,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:02,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:02,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:02,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:03,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171333588] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:03,127 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:03,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:03,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271645975] [2022-01-18 02:11:03,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:03,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:03,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:03,128 INFO L87 Difference]: Start difference. First operand 2188 states and 6178 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:06,117 INFO L93 Difference]: Finished difference Result 3644 states and 9772 transitions. [2022-01-18 02:11:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:11:06,117 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:06,123 INFO L225 Difference]: With dead ends: 3644 [2022-01-18 02:11:06,123 INFO L226 Difference]: Without dead ends: 3542 [2022-01-18 02:11:06,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3036 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1303, Invalid=9203, Unknown=0, NotChecked=0, Total=10506 [2022-01-18 02:11:06,124 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 931 mSDsluCounter, 3597 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:06,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 3624 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:11:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2022-01-18 02:11:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 2208. [2022-01-18 02:11:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 2207 states have (on average 2.829632985953783) internal successors, (6245), 2207 states have internal predecessors, (6245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 6245 transitions. [2022-01-18 02:11:06,166 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 6245 transitions. Word has length 72 [2022-01-18 02:11:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:06,166 INFO L470 AbstractCegarLoop]: Abstraction has 2208 states and 6245 transitions. [2022-01-18 02:11:06,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 6245 transitions. [2022-01-18 02:11:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:06,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:06,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:06,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Ended with exit code 0 [2022-01-18 02:11:06,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-01-18 02:11:06,383 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:06,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:06,384 INFO L85 PathProgramCache]: Analyzing trace with hash 632511217, now seen corresponding path program 150 times [2022-01-18 02:11:06,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:06,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668992183] [2022-01-18 02:11:06,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:06,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:06,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:06,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668992183] [2022-01-18 02:11:06,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668992183] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:06,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443050969] [2022-01-18 02:11:06,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:11:06,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:06,642 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:06,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2022-01-18 02:11:06,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:11:06,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:06,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:06,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:07,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:07,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443050969] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:07,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:07,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:07,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856527228] [2022-01-18 02:11:07,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:07,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:07,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:07,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:07,733 INFO L87 Difference]: Start difference. First operand 2208 states and 6245 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:09,840 INFO L93 Difference]: Finished difference Result 3413 states and 9294 transitions. [2022-01-18 02:11:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 02:11:09,840 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:09,845 INFO L225 Difference]: With dead ends: 3413 [2022-01-18 02:11:09,845 INFO L226 Difference]: Without dead ends: 3281 [2022-01-18 02:11:09,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2498 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1109, Invalid=7633, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 02:11:09,846 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 685 mSDsluCounter, 3640 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:09,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 3704 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:11:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-01-18 02:11:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 2184. [2022-01-18 02:11:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.821346770499313) internal successors, (6159), 2183 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6159 transitions. [2022-01-18 02:11:09,871 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6159 transitions. Word has length 72 [2022-01-18 02:11:09,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:09,871 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6159 transitions. [2022-01-18 02:11:09,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:09,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6159 transitions. [2022-01-18 02:11:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:09,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:09,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:09,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Ended with exit code 0 [2022-01-18 02:11:10,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:10,090 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:10,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:10,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1863390927, now seen corresponding path program 151 times [2022-01-18 02:11:10,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:10,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967220859] [2022-01-18 02:11:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:10,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:10,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:10,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967220859] [2022-01-18 02:11:10,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967220859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:10,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221276778] [2022-01-18 02:11:10,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:11:10,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:10,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:10,271 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:10,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2022-01-18 02:11:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:10,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:10,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:10,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:11,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221276778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:11,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:11,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:11,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541063993] [2022-01-18 02:11:11,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:11,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:11,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:11,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:11,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:11,010 INFO L87 Difference]: Start difference. First operand 2184 states and 6159 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:12,738 INFO L93 Difference]: Finished difference Result 3383 states and 9191 transitions. [2022-01-18 02:11:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 02:11:12,738 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:12,744 INFO L225 Difference]: With dead ends: 3383 [2022-01-18 02:11:12,744 INFO L226 Difference]: Without dead ends: 3236 [2022-01-18 02:11:12,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=885, Invalid=7125, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 02:11:12,745 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 666 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:12,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 3513 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:11:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-01-18 02:11:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2192. [2022-01-18 02:11:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 2191 states have (on average 2.8210862619808306) internal successors, (6181), 2191 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 6181 transitions. [2022-01-18 02:11:12,782 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 6181 transitions. Word has length 72 [2022-01-18 02:11:12,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:12,782 INFO L470 AbstractCegarLoop]: Abstraction has 2192 states and 6181 transitions. [2022-01-18 02:11:12,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 6181 transitions. [2022-01-18 02:11:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:12,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:12,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:12,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:12,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:12,988 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:12,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:12,988 INFO L85 PathProgramCache]: Analyzing trace with hash 812004113, now seen corresponding path program 152 times [2022-01-18 02:11:12,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:12,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440109141] [2022-01-18 02:11:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:12,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:13,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:13,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440109141] [2022-01-18 02:11:13,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440109141] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:13,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432659892] [2022-01-18 02:11:13,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:11:13,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:13,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:13,211 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:13,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2022-01-18 02:11:13,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:11:13,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:13,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:13,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:13,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:14,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432659892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:14,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:14,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:14,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120929456] [2022-01-18 02:11:14,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:14,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:14,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:14,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:14,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:14,278 INFO L87 Difference]: Start difference. First operand 2192 states and 6181 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:18,381 INFO L93 Difference]: Finished difference Result 3878 states and 10446 transitions. [2022-01-18 02:11:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 02:11:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:18,387 INFO L225 Difference]: With dead ends: 3878 [2022-01-18 02:11:18,387 INFO L226 Difference]: Without dead ends: 3701 [2022-01-18 02:11:18,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4754 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1784, Invalid=13716, Unknown=0, NotChecked=0, Total=15500 [2022-01-18 02:11:18,388 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 917 mSDsluCounter, 4555 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:18,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 4609 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:11:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2022-01-18 02:11:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 2196. [2022-01-18 02:11:18,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2195 states have (on average 2.8227790432801823) internal successors, (6196), 2195 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 6196 transitions. [2022-01-18 02:11:18,418 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 6196 transitions. Word has length 72 [2022-01-18 02:11:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:18,418 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 6196 transitions. [2022-01-18 02:11:18,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 6196 transitions. [2022-01-18 02:11:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:18,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:18,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:18,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:18,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable209 [2022-01-18 02:11:18,643 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:18,644 INFO L85 PathProgramCache]: Analyzing trace with hash -214881733, now seen corresponding path program 153 times [2022-01-18 02:11:18,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:18,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979168826] [2022-01-18 02:11:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:18,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:18,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979168826] [2022-01-18 02:11:18,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979168826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657512491] [2022-01-18 02:11:18,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:11:18,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:18,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:18,897 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:18,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2022-01-18 02:11:19,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:11:19,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:19,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:19,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:19,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:20,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657512491] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:20,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:20,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:20,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333615748] [2022-01-18 02:11:20,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:20,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:20,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:20,021 INFO L87 Difference]: Start difference. First operand 2196 states and 6196 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:22,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:22,700 INFO L93 Difference]: Finished difference Result 3452 states and 9364 transitions. [2022-01-18 02:11:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:11:22,701 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:22,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:22,705 INFO L225 Difference]: With dead ends: 3452 [2022-01-18 02:11:22,705 INFO L226 Difference]: Without dead ends: 3350 [2022-01-18 02:11:22,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2474 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1056, Invalid=7874, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 02:11:22,706 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 626 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 2136 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:22,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 3927 Invalid, 2226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:11:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2022-01-18 02:11:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 2172. [2022-01-18 02:11:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2171 states have (on average 2.821741133118379) internal successors, (6126), 2171 states have internal predecessors, (6126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 6126 transitions. [2022-01-18 02:11:22,734 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 6126 transitions. Word has length 72 [2022-01-18 02:11:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:22,734 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 6126 transitions. [2022-01-18 02:11:22,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 6126 transitions. [2022-01-18 02:11:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:22,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:22,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:22,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Ended with exit code 0 [2022-01-18 02:11:22,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-01-18 02:11:22,953 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:22,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:22,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1523023047, now seen corresponding path program 154 times [2022-01-18 02:11:22,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:22,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285961955] [2022-01-18 02:11:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:22,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:23,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:23,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285961955] [2022-01-18 02:11:23,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285961955] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:23,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123270519] [2022-01-18 02:11:23,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:11:23,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:23,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:23,115 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:23,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2022-01-18 02:11:23,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:11:23,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:23,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:23,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:23,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:23,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123270519] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:23,840 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:23,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:23,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35943260] [2022-01-18 02:11:23,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:23,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:23,841 INFO L87 Difference]: Start difference. First operand 2172 states and 6126 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:26,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:26,936 INFO L93 Difference]: Finished difference Result 3576 states and 9695 transitions. [2022-01-18 02:11:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 02:11:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:26,941 INFO L225 Difference]: With dead ends: 3576 [2022-01-18 02:11:26,941 INFO L226 Difference]: Without dead ends: 3414 [2022-01-18 02:11:26,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3825 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1416, Invalid=11240, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 02:11:26,942 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 746 mSDsluCounter, 5107 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:26,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 5126 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:11:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-01-18 02:11:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 2180. [2022-01-18 02:11:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 2.8214777420835246) internal successors, (6148), 2179 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 6148 transitions. [2022-01-18 02:11:26,968 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 6148 transitions. Word has length 72 [2022-01-18 02:11:26,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:26,968 INFO L470 AbstractCegarLoop]: Abstraction has 2180 states and 6148 transitions. [2022-01-18 02:11:26,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 6148 transitions. [2022-01-18 02:11:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:26,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:26,971 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] [2022-01-18 02:11:26,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:27,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:27,187 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:27,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:27,187 INFO L85 PathProgramCache]: Analyzing trace with hash -96549209, now seen corresponding path program 155 times [2022-01-18 02:11:27,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:27,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252599313] [2022-01-18 02:11:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:27,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:27,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:27,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252599313] [2022-01-18 02:11:27,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252599313] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:27,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787735131] [2022-01-18 02:11:27,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:11:27,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:27,386 INFO L229 MonitoredProcess]: Starting monitored process 207 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:27,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2022-01-18 02:11:27,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:11:27,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:27,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:11:27,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:28,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:28,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787735131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:28,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:28,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:11:28,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291152889] [2022-01-18 02:11:28,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:28,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:11:28,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:11:28,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1395, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:11:28,563 INFO L87 Difference]: Start difference. First operand 2180 states and 6148 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:30,559 INFO L93 Difference]: Finished difference Result 3309 states and 9055 transitions. [2022-01-18 02:11:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:11:30,559 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:30,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:30,564 INFO L225 Difference]: With dead ends: 3309 [2022-01-18 02:11:30,564 INFO L226 Difference]: Without dead ends: 3228 [2022-01-18 02:11:30,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1716, Invalid=8586, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 02:11:30,565 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 864 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:30,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 3085 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:11:30,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2022-01-18 02:11:30,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 2200. [2022-01-18 02:11:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2199 states have (on average 2.8226466575716236) internal successors, (6207), 2199 states have internal predecessors, (6207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 6207 transitions. [2022-01-18 02:11:30,594 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 6207 transitions. Word has length 72 [2022-01-18 02:11:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:30,594 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 6207 transitions. [2022-01-18 02:11:30,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 6207 transitions. [2022-01-18 02:11:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:30,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:30,597 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] [2022-01-18 02:11:30,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:30,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-01-18 02:11:30,810 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1123435055, now seen corresponding path program 156 times [2022-01-18 02:11:30,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:30,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261748613] [2022-01-18 02:11:30,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:30,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:30,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:30,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261748613] [2022-01-18 02:11:30,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261748613] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:30,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616303868] [2022-01-18 02:11:30,957 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:11:30,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:30,958 INFO L229 MonitoredProcess]: Starting monitored process 208 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:30,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2022-01-18 02:11:31,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:11:31,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:31,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:31,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:31,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:31,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616303868] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:31,757 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:31,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:31,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536332072] [2022-01-18 02:11:31,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:31,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:31,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:31,758 INFO L87 Difference]: Start difference. First operand 2200 states and 6207 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:33,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:33,838 INFO L93 Difference]: Finished difference Result 3510 states and 9469 transitions. [2022-01-18 02:11:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:11:33,838 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:33,843 INFO L225 Difference]: With dead ends: 3510 [2022-01-18 02:11:33,843 INFO L226 Difference]: Without dead ends: 3408 [2022-01-18 02:11:33,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1171, Invalid=7949, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 02:11:33,844 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 679 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:33,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 4171 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:11:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2022-01-18 02:11:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 2184. [2022-01-18 02:11:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.8268437929454877) internal successors, (6171), 2183 states have internal predecessors, (6171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6171 transitions. [2022-01-18 02:11:33,871 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6171 transitions. Word has length 72 [2022-01-18 02:11:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:33,871 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6171 transitions. [2022-01-18 02:11:33,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6171 transitions. [2022-01-18 02:11:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:33,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:33,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:33,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:34,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2022-01-18 02:11:34,081 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:34,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1979225913, now seen corresponding path program 157 times [2022-01-18 02:11:34,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:34,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591592524] [2022-01-18 02:11:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:34,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:34,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:34,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591592524] [2022-01-18 02:11:34,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591592524] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:34,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998060054] [2022-01-18 02:11:34,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:11:34,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:34,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:34,272 INFO L229 MonitoredProcess]: Starting monitored process 209 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:34,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2022-01-18 02:11:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:34,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:34,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:34,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:34,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998060054] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:34,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:34,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:34,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56413909] [2022-01-18 02:11:34,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:34,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:34,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:34,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:34,988 INFO L87 Difference]: Start difference. First operand 2184 states and 6171 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:38,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:38,874 INFO L93 Difference]: Finished difference Result 4604 states and 12343 transitions. [2022-01-18 02:11:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-18 02:11:38,874 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:38,880 INFO L225 Difference]: With dead ends: 4604 [2022-01-18 02:11:38,881 INFO L226 Difference]: Without dead ends: 4412 [2022-01-18 02:11:38,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7197 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2453, Invalid=18139, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 02:11:38,882 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 1311 mSDsluCounter, 4971 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 4966 SdHoareTripleChecker+Invalid, 2644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:38,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 4966 Invalid, 2644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:11:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4412 states. [2022-01-18 02:11:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4412 to 2208. [2022-01-18 02:11:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 2207 states have (on average 2.829632985953783) internal successors, (6245), 2207 states have internal predecessors, (6245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 6245 transitions. [2022-01-18 02:11:38,915 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 6245 transitions. Word has length 72 [2022-01-18 02:11:38,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:38,915 INFO L470 AbstractCegarLoop]: Abstraction has 2208 states and 6245 transitions. [2022-01-18 02:11:38,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 6245 transitions. [2022-01-18 02:11:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:38,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:38,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:38,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:39,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2022-01-18 02:11:39,131 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1814410945, now seen corresponding path program 158 times [2022-01-18 02:11:39,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:39,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290640539] [2022-01-18 02:11:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:39,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:39,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:39,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290640539] [2022-01-18 02:11:39,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290640539] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:39,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018632595] [2022-01-18 02:11:39,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:11:39,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:39,280 INFO L229 MonitoredProcess]: Starting monitored process 210 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:39,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2022-01-18 02:11:39,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:11:39,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:39,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:39,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:40,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018632595] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:40,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:40,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:40,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749763896] [2022-01-18 02:11:40,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:40,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:40,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:40,443 INFO L87 Difference]: Start difference. First operand 2208 states and 6245 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:43,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:43,468 INFO L93 Difference]: Finished difference Result 4739 states and 12838 transitions. [2022-01-18 02:11:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 02:11:43,468 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:43,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:43,476 INFO L225 Difference]: With dead ends: 4739 [2022-01-18 02:11:43,476 INFO L226 Difference]: Without dead ends: 4637 [2022-01-18 02:11:43,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1815, Invalid=12465, Unknown=0, NotChecked=0, Total=14280 [2022-01-18 02:11:43,478 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 1092 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3414 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:43,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 3414 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:11:43,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4637 states. [2022-01-18 02:11:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 2204. [2022-01-18 02:11:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 2203 states have (on average 2.82614616432138) internal successors, (6226), 2203 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 6226 transitions. [2022-01-18 02:11:43,518 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 6226 transitions. Word has length 72 [2022-01-18 02:11:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:43,518 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 6226 transitions. [2022-01-18 02:11:43,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 6226 transitions. [2022-01-18 02:11:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:43,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:43,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:43,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:43,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:43,729 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash -703122767, now seen corresponding path program 159 times [2022-01-18 02:11:43,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:43,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836610094] [2022-01-18 02:11:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:43,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:43,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:43,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836610094] [2022-01-18 02:11:43,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836610094] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:43,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770766802] [2022-01-18 02:11:43,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:11:43,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:43,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:43,870 INFO L229 MonitoredProcess]: Starting monitored process 211 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:43,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2022-01-18 02:11:44,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:11:44,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:44,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:11:44,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:44,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:44,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770766802] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:44,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:44,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 41 [2022-01-18 02:11:44,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005398244] [2022-01-18 02:11:44,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:44,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:11:44,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:44,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:11:44,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1386, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:11:44,774 INFO L87 Difference]: Start difference. First operand 2204 states and 6226 transitions. Second operand has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:45,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:45,454 INFO L93 Difference]: Finished difference Result 2894 states and 7999 transitions. [2022-01-18 02:11:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 02:11:45,454 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:45,457 INFO L225 Difference]: With dead ends: 2894 [2022-01-18 02:11:45,457 INFO L226 Difference]: Without dead ends: 2768 [2022-01-18 02:11:45,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=652, Invalid=3508, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 02:11:45,458 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 652 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:45,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2307 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:11:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2022-01-18 02:11:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2212. [2022-01-18 02:11:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2211 states have (on average 2.825870646766169) internal successors, (6248), 2211 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 6248 transitions. [2022-01-18 02:11:45,481 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 6248 transitions. Word has length 72 [2022-01-18 02:11:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:45,481 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 6248 transitions. [2022-01-18 02:11:45,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.682926829268293) internal successors, (151), 41 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 6248 transitions. [2022-01-18 02:11:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:45,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:45,484 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] [2022-01-18 02:11:45,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:45,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2022-01-18 02:11:45,700 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1083662747, now seen corresponding path program 160 times [2022-01-18 02:11:45,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895683953] [2022-01-18 02:11:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:45,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:45,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:45,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895683953] [2022-01-18 02:11:45,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895683953] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:45,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744673914] [2022-01-18 02:11:45,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:11:45,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:45,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:45,829 INFO L229 MonitoredProcess]: Starting monitored process 212 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:45,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2022-01-18 02:11:45,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:11:45,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:45,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:45,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:46,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:46,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744673914] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:46,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:46,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:46,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850088421] [2022-01-18 02:11:46,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:46,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:46,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:46,698 INFO L87 Difference]: Start difference. First operand 2212 states and 6248 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:48,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:48,849 INFO L93 Difference]: Finished difference Result 3476 states and 9382 transitions. [2022-01-18 02:11:48,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 02:11:48,849 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:48,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:48,853 INFO L225 Difference]: With dead ends: 3476 [2022-01-18 02:11:48,853 INFO L226 Difference]: Without dead ends: 3299 [2022-01-18 02:11:48,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1862 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=793, Invalid=6013, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 02:11:48,854 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 681 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:48,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 3802 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:11:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2022-01-18 02:11:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 2216. [2022-01-18 02:11:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2215 states have (on average 2.8257336343115123) internal successors, (6259), 2215 states have internal predecessors, (6259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 6259 transitions. [2022-01-18 02:11:48,880 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 6259 transitions. Word has length 72 [2022-01-18 02:11:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:48,880 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 6259 transitions. [2022-01-18 02:11:48,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 6259 transitions. [2022-01-18 02:11:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:48,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:48,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:48,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Ended with exit code 0 [2022-01-18 02:11:49,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:49,086 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2112371005, now seen corresponding path program 161 times [2022-01-18 02:11:49,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:49,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163831387] [2022-01-18 02:11:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:49,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:49,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:49,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163831387] [2022-01-18 02:11:49,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163831387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:49,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155554176] [2022-01-18 02:11:49,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:11:49,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:49,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:49,259 INFO L229 MonitoredProcess]: Starting monitored process 213 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:49,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2022-01-18 02:11:49,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:11:49,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:49,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:49,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:49,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:49,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155554176] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:49,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:49,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:49,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842955557] [2022-01-18 02:11:49,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:49,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:49,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:49,984 INFO L87 Difference]: Start difference. First operand 2216 states and 6259 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:52,634 INFO L93 Difference]: Finished difference Result 4472 states and 12111 transitions. [2022-01-18 02:11:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 02:11:52,634 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:52,640 INFO L225 Difference]: With dead ends: 4472 [2022-01-18 02:11:52,640 INFO L226 Difference]: Without dead ends: 4310 [2022-01-18 02:11:52,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4084 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1481, Invalid=11175, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 02:11:52,642 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 968 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 4294 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:52,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 4294 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:11:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2022-01-18 02:11:52,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 2224. [2022-01-18 02:11:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 2223 states have (on average 2.8254610886189835) internal successors, (6281), 2223 states have internal predecessors, (6281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 6281 transitions. [2022-01-18 02:11:52,672 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 6281 transitions. Word has length 72 [2022-01-18 02:11:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:52,672 INFO L470 AbstractCegarLoop]: Abstraction has 2224 states and 6281 transitions. [2022-01-18 02:11:52,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 6281 transitions. [2022-01-18 02:11:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:52,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:52,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:11:52,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:52,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:52,890 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:52,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash 563024035, now seen corresponding path program 162 times [2022-01-18 02:11:52,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:52,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259262324] [2022-01-18 02:11:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:52,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:53,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:53,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259262324] [2022-01-18 02:11:53,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259262324] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:53,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782289872] [2022-01-18 02:11:53,016 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:11:53,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:53,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:53,017 INFO L229 MonitoredProcess]: Starting monitored process 214 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:53,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2022-01-18 02:11:53,180 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:11:53,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:11:53,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:53,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:53,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:53,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782289872] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:53,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:53,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:53,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080496267] [2022-01-18 02:11:53,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:53,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:53,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:53,836 INFO L87 Difference]: Start difference. First operand 2224 states and 6281 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:11:58,862 INFO L93 Difference]: Finished difference Result 4948 states and 13263 transitions. [2022-01-18 02:11:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 02:11:58,862 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:11:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:11:58,869 INFO L225 Difference]: With dead ends: 4948 [2022-01-18 02:11:58,869 INFO L226 Difference]: Without dead ends: 4816 [2022-01-18 02:11:58,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7097 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2492, Invalid=17530, Unknown=0, NotChecked=0, Total=20022 [2022-01-18 02:11:58,870 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1405 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 4110 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:11:58,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1405 Valid, 4110 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:11:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2022-01-18 02:11:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 2224. [2022-01-18 02:11:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 2223 states have (on average 2.8254610886189835) internal successors, (6281), 2223 states have internal predecessors, (6281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 6281 transitions. [2022-01-18 02:11:58,902 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 6281 transitions. Word has length 72 [2022-01-18 02:11:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:11:58,902 INFO L470 AbstractCegarLoop]: Abstraction has 2224 states and 6281 transitions. [2022-01-18 02:11:58,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:11:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 6281 transitions. [2022-01-18 02:11:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:11:58,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:11:58,905 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] [2022-01-18 02:11:58,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Forceful destruction successful, exit code 0 [2022-01-18 02:11:59,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219 [2022-01-18 02:11:59,111 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:11:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:11:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash -463861811, now seen corresponding path program 163 times [2022-01-18 02:11:59,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:11:59,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279097865] [2022-01-18 02:11:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:11:59,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:11:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:59,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:11:59,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279097865] [2022-01-18 02:11:59,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279097865] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:11:59,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786528421] [2022-01-18 02:11:59,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:11:59,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:11:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:11:59,267 INFO L229 MonitoredProcess]: Starting monitored process 215 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:11:59,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2022-01-18 02:11:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:11:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:11:59,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:11:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:59,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:11:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:11:59,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786528421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:11:59,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:11:59,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:11:59,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247281658] [2022-01-18 02:11:59,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:11:59,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:11:59,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:11:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:11:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:11:59,993 INFO L87 Difference]: Start difference. First operand 2224 states and 6281 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:02,908 INFO L93 Difference]: Finished difference Result 4149 states and 11133 transitions. [2022-01-18 02:12:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 02:12:02,908 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:02,914 INFO L225 Difference]: With dead ends: 4149 [2022-01-18 02:12:02,914 INFO L226 Difference]: Without dead ends: 4047 [2022-01-18 02:12:02,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4189 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1704, Invalid=11178, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 02:12:02,916 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1037 mSDsluCounter, 4473 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 4456 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:02,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 4456 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:12:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2022-01-18 02:12:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 2264. [2022-01-18 02:12:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 2263 states have (on average 2.8329650905877153) internal successors, (6411), 2263 states have internal predecessors, (6411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 6411 transitions. [2022-01-18 02:12:02,946 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 6411 transitions. Word has length 72 [2022-01-18 02:12:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:02,946 INFO L470 AbstractCegarLoop]: Abstraction has 2264 states and 6411 transitions. [2022-01-18 02:12:02,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 6411 transitions. [2022-01-18 02:12:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:02,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:02,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:02,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:03,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:03,165 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1103863735, now seen corresponding path program 164 times [2022-01-18 02:12:03,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:03,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592981834] [2022-01-18 02:12:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:03,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:03,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:03,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592981834] [2022-01-18 02:12:03,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592981834] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:03,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045747746] [2022-01-18 02:12:03,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:12:03,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:03,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:03,385 INFO L229 MonitoredProcess]: Starting monitored process 216 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:03,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2022-01-18 02:12:03,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:12:03,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:03,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:03,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:03,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:04,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045747746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:04,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:04,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 37 [2022-01-18 02:12:04,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941148835] [2022-01-18 02:12:04,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:04,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:12:04,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:04,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:12:04,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:12:04,406 INFO L87 Difference]: Start difference. First operand 2264 states and 6411 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:05,846 INFO L93 Difference]: Finished difference Result 3334 states and 9075 transitions. [2022-01-18 02:12:05,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 02:12:05,846 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:05,851 INFO L225 Difference]: With dead ends: 3334 [2022-01-18 02:12:05,851 INFO L226 Difference]: Without dead ends: 3142 [2022-01-18 02:12:05,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=633, Invalid=4917, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 02:12:05,852 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 680 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:05,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 2698 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:12:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2022-01-18 02:12:05,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 2256. [2022-01-18 02:12:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 2.8261640798226164) internal successors, (6373), 2255 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 6373 transitions. [2022-01-18 02:12:05,877 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 6373 transitions. Word has length 72 [2022-01-18 02:12:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:05,877 INFO L470 AbstractCegarLoop]: Abstraction has 2256 states and 6373 transitions. [2022-01-18 02:12:05,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 6373 transitions. [2022-01-18 02:12:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:05,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:05,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:05,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:06,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:06,082 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:06,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1188170875, now seen corresponding path program 52 times [2022-01-18 02:12:06,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:06,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503094719] [2022-01-18 02:12:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:06,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:06,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:06,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503094719] [2022-01-18 02:12:06,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503094719] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:06,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864169175] [2022-01-18 02:12:06,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:12:06,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:06,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:06,341 INFO L229 MonitoredProcess]: Starting monitored process 217 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:06,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2022-01-18 02:12:06,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:12:06,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:06,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:12:06,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:07,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:07,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864169175] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:07,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:07,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2022-01-18 02:12:07,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310697275] [2022-01-18 02:12:07,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:07,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 02:12:07,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 02:12:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1684, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 02:12:07,616 INFO L87 Difference]: Start difference. First operand 2256 states and 6373 transitions. Second operand has 44 states, 44 states have (on average 3.25) internal successors, (143), 44 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:08,474 INFO L93 Difference]: Finished difference Result 3012 states and 8205 transitions. [2022-01-18 02:12:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 02:12:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 44 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:08,479 INFO L225 Difference]: With dead ends: 3012 [2022-01-18 02:12:08,479 INFO L226 Difference]: Without dead ends: 2910 [2022-01-18 02:12:08,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=648, Invalid=4754, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 02:12:08,481 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 669 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:08,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 3156 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:12:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-01-18 02:12:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2256. [2022-01-18 02:12:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 2.8261640798226164) internal successors, (6373), 2255 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 6373 transitions. [2022-01-18 02:12:08,518 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 6373 transitions. Word has length 72 [2022-01-18 02:12:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:08,518 INFO L470 AbstractCegarLoop]: Abstraction has 2256 states and 6373 transitions. [2022-01-18 02:12:08,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 44 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 6373 transitions. [2022-01-18 02:12:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:08,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:08,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:08,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Ended with exit code 0 [2022-01-18 02:12:08,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-01-18 02:12:08,734 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:08,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1731611043, now seen corresponding path program 165 times [2022-01-18 02:12:08,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:08,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846772469] [2022-01-18 02:12:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:08,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:08,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:08,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846772469] [2022-01-18 02:12:08,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846772469] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:08,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739885875] [2022-01-18 02:12:08,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:12:08,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:08,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:08,969 INFO L229 MonitoredProcess]: Starting monitored process 218 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:08,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2022-01-18 02:12:09,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:12:09,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:09,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:09,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:09,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:09,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739885875] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:09,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:09,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:12:09,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224538171] [2022-01-18 02:12:09,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:09,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:12:09,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:09,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:12:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:12:09,945 INFO L87 Difference]: Start difference. First operand 2256 states and 6373 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:10,617 INFO L93 Difference]: Finished difference Result 3020 states and 8255 transitions. [2022-01-18 02:12:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 02:12:10,618 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:10,622 INFO L225 Difference]: With dead ends: 3020 [2022-01-18 02:12:10,622 INFO L226 Difference]: Without dead ends: 2969 [2022-01-18 02:12:10,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=2022, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 02:12:10,622 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 399 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:10,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 1840 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:12:10,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2022-01-18 02:12:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2284. [2022-01-18 02:12:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2283 states have (on average 2.8234778799824793) internal successors, (6446), 2283 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 6446 transitions. [2022-01-18 02:12:10,662 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 6446 transitions. Word has length 72 [2022-01-18 02:12:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:10,662 INFO L470 AbstractCegarLoop]: Abstraction has 2284 states and 6446 transitions. [2022-01-18 02:12:10,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:10,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 6446 transitions. [2022-01-18 02:12:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:10,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:10,664 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] [2022-01-18 02:12:10,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:10,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2022-01-18 02:12:10,879 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1260419345, now seen corresponding path program 166 times [2022-01-18 02:12:10,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:10,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500850129] [2022-01-18 02:12:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:10,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:11,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:11,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500850129] [2022-01-18 02:12:11,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500850129] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:11,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28125349] [2022-01-18 02:12:11,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:12:11,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:11,117 INFO L229 MonitoredProcess]: Starting monitored process 219 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:11,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2022-01-18 02:12:11,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:12:11,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:11,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:11,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:11,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:12,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28125349] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:12,127 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:12,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:12:12,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856921034] [2022-01-18 02:12:12,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:12,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:12:12,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:12,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:12:12,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:12:12,128 INFO L87 Difference]: Start difference. First operand 2284 states and 6446 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:13,448 INFO L93 Difference]: Finished difference Result 3204 states and 8733 transitions. [2022-01-18 02:12:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 02:12:13,449 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:13,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:13,455 INFO L225 Difference]: With dead ends: 3204 [2022-01-18 02:12:13,455 INFO L226 Difference]: Without dead ends: 3153 [2022-01-18 02:12:13,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=743, Invalid=3547, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 02:12:13,456 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 437 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:13,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 2457 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:12:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-01-18 02:12:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2300. [2022-01-18 02:12:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 2.8247063940843846) internal successors, (6494), 2299 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:13,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 6494 transitions. [2022-01-18 02:12:13,490 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 6494 transitions. Word has length 72 [2022-01-18 02:12:13,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:13,490 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 6494 transitions. [2022-01-18 02:12:13,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 6494 transitions. [2022-01-18 02:12:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:13,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:13,492 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] [2022-01-18 02:12:13,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Ended with exit code 0 [2022-01-18 02:12:13,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-01-18 02:12:13,710 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:13,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash 959145669, now seen corresponding path program 167 times [2022-01-18 02:12:13,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:13,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432892634] [2022-01-18 02:12:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:13,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:13,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:13,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432892634] [2022-01-18 02:12:13,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432892634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:13,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135913792] [2022-01-18 02:12:13,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:12:13,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:13,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:13,916 INFO L229 MonitoredProcess]: Starting monitored process 220 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:13,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Waiting until timeout for monitored process [2022-01-18 02:12:14,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:12:14,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:14,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:14,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:15,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135913792] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:15,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:15,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:12:15,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512768067] [2022-01-18 02:12:15,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:15,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:12:15,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:12:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:12:15,039 INFO L87 Difference]: Start difference. First operand 2300 states and 6494 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:17,112 INFO L93 Difference]: Finished difference Result 3527 states and 9502 transitions. [2022-01-18 02:12:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 02:12:17,113 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:17,117 INFO L225 Difference]: With dead ends: 3527 [2022-01-18 02:12:17,118 INFO L226 Difference]: Without dead ends: 3476 [2022-01-18 02:12:17,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1381, Invalid=5591, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 02:12:17,118 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 757 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:17,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 2572 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:12:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-01-18 02:12:17,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 2316. [2022-01-18 02:12:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2315 states have (on average 2.8311015118790497) internal successors, (6554), 2315 states have internal predecessors, (6554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 6554 transitions. [2022-01-18 02:12:17,147 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 6554 transitions. Word has length 72 [2022-01-18 02:12:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:17,147 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 6554 transitions. [2022-01-18 02:12:17,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 6554 transitions. [2022-01-18 02:12:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:17,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:17,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:17,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:17,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,220 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:17,357 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1902373319, now seen corresponding path program 168 times [2022-01-18 02:12:17,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:17,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143661331] [2022-01-18 02:12:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:17,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:17,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:17,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143661331] [2022-01-18 02:12:17,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143661331] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:17,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572020138] [2022-01-18 02:12:17,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:12:17,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:17,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:17,529 INFO L229 MonitoredProcess]: Starting monitored process 221 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:17,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Waiting until timeout for monitored process [2022-01-18 02:12:17,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:12:17,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:17,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:17,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:17,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:18,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572020138] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:18,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:18,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:12:18,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44420673] [2022-01-18 02:12:18,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:18,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:12:18,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:12:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:12:18,222 INFO L87 Difference]: Start difference. First operand 2316 states and 6554 transitions. Second operand has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:19,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:19,248 INFO L93 Difference]: Finished difference Result 3341 states and 9088 transitions. [2022-01-18 02:12:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 02:12:19,248 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:19,252 INFO L225 Difference]: With dead ends: 3341 [2022-01-18 02:12:19,252 INFO L226 Difference]: Without dead ends: 3260 [2022-01-18 02:12:19,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=868, Invalid=3688, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 02:12:19,253 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 605 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:19,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 2138 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:12:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-01-18 02:12:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 2284. [2022-01-18 02:12:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2283 states have (on average 2.8217257993867717) internal successors, (6442), 2283 states have internal predecessors, (6442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 6442 transitions. [2022-01-18 02:12:19,280 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 6442 transitions. Word has length 72 [2022-01-18 02:12:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:19,280 INFO L470 AbstractCegarLoop]: Abstraction has 2284 states and 6442 transitions. [2022-01-18 02:12:19,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 6442 transitions. [2022-01-18 02:12:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:19,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:19,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:19,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:19,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 221 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2022-01-18 02:12:19,499 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2062827205, now seen corresponding path program 169 times [2022-01-18 02:12:19,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:19,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321551153] [2022-01-18 02:12:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:19,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:19,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:19,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321551153] [2022-01-18 02:12:19,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321551153] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:19,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301507470] [2022-01-18 02:12:19,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:12:19,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:19,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:19,668 INFO L229 MonitoredProcess]: Starting monitored process 222 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:19,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Waiting until timeout for monitored process [2022-01-18 02:12:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:19,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:19,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:20,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:20,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301507470] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:20,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:20,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:12:20,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682611853] [2022-01-18 02:12:20,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:20,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:12:20,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:20,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:12:20,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:12:20,363 INFO L87 Difference]: Start difference. First operand 2284 states and 6442 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:21,233 INFO L93 Difference]: Finished difference Result 3271 states and 8897 transitions. [2022-01-18 02:12:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 02:12:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:21,237 INFO L225 Difference]: With dead ends: 3271 [2022-01-18 02:12:21,237 INFO L226 Difference]: Without dead ends: 3220 [2022-01-18 02:12:21,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=605, Invalid=2587, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:12:21,237 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 664 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:21,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 2169 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:12:21,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2022-01-18 02:12:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2312. [2022-01-18 02:12:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2311 states have (on average 2.829511034184336) internal successors, (6539), 2311 states have internal predecessors, (6539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 6539 transitions. [2022-01-18 02:12:21,264 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 6539 transitions. Word has length 72 [2022-01-18 02:12:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:21,264 INFO L470 AbstractCegarLoop]: Abstraction has 2312 states and 6539 transitions. [2022-01-18 02:12:21,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 6539 transitions. [2022-01-18 02:12:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:21,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:21,266 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] [2022-01-18 02:12:21,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:21,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,222 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:21,470 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:21,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash -798691783, now seen corresponding path program 170 times [2022-01-18 02:12:21,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:21,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808708644] [2022-01-18 02:12:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:21,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:21,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:21,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808708644] [2022-01-18 02:12:21,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808708644] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:21,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803675336] [2022-01-18 02:12:21,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:12:21,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:21,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:21,608 INFO L229 MonitoredProcess]: Starting monitored process 223 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:21,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Waiting until timeout for monitored process [2022-01-18 02:12:21,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:12:21,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:21,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:21,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:22,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:22,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803675336] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:22,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:22,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:12:22,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16746310] [2022-01-18 02:12:22,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:22,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:12:22,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:22,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:12:22,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:12:22,300 INFO L87 Difference]: Start difference. First operand 2312 states and 6539 transitions. Second operand has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:23,231 INFO L93 Difference]: Finished difference Result 3396 states and 9316 transitions. [2022-01-18 02:12:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 02:12:23,232 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:23,236 INFO L225 Difference]: With dead ends: 3396 [2022-01-18 02:12:23,236 INFO L226 Difference]: Without dead ends: 3300 [2022-01-18 02:12:23,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=746, Invalid=3286, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 02:12:23,236 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 507 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:23,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 2838 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:12:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2022-01-18 02:12:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2280. [2022-01-18 02:12:23,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2279 states have (on average 2.8218516893374286) internal successors, (6431), 2279 states have internal predecessors, (6431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 6431 transitions. [2022-01-18 02:12:23,263 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 6431 transitions. Word has length 72 [2022-01-18 02:12:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:23,263 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 6431 transitions. [2022-01-18 02:12:23,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 6431 transitions. [2022-01-18 02:12:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:23,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:23,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:23,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:23,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 223 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2022-01-18 02:12:23,475 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1346819697, now seen corresponding path program 171 times [2022-01-18 02:12:23,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:23,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780710864] [2022-01-18 02:12:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:23,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:23,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:23,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780710864] [2022-01-18 02:12:23,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780710864] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:23,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103259640] [2022-01-18 02:12:23,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:12:23,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:23,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:23,715 INFO L229 MonitoredProcess]: Starting monitored process 224 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:23,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Waiting until timeout for monitored process [2022-01-18 02:12:23,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:12:23,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:23,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:23,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:24,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:24,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103259640] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:24,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:24,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:12:24,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847626185] [2022-01-18 02:12:24,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:24,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:12:24,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:12:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:12:24,732 INFO L87 Difference]: Start difference. First operand 2280 states and 6431 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:26,099 INFO L93 Difference]: Finished difference Result 3314 states and 9013 transitions. [2022-01-18 02:12:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:12:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:26,104 INFO L225 Difference]: With dead ends: 3314 [2022-01-18 02:12:26,105 INFO L226 Difference]: Without dead ends: 3263 [2022-01-18 02:12:26,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=669, Invalid=2991, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 02:12:26,105 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 576 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:26,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 2413 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:12:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2022-01-18 02:12:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 2312. [2022-01-18 02:12:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2311 states have (on average 2.8312418866291647) internal successors, (6543), 2311 states have internal predecessors, (6543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:26,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 6543 transitions. [2022-01-18 02:12:26,133 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 6543 transitions. Word has length 72 [2022-01-18 02:12:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:26,133 INFO L470 AbstractCegarLoop]: Abstraction has 2312 states and 6543 transitions. [2022-01-18 02:12:26,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 6543 transitions. [2022-01-18 02:12:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:26,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:26,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:26,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:26,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable229 [2022-01-18 02:12:26,379 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1514699291, now seen corresponding path program 172 times [2022-01-18 02:12:26,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:26,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107340110] [2022-01-18 02:12:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:26,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:26,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:26,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107340110] [2022-01-18 02:12:26,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107340110] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:26,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280704276] [2022-01-18 02:12:26,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:12:26,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:26,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:26,521 INFO L229 MonitoredProcess]: Starting monitored process 225 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:26,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Waiting until timeout for monitored process [2022-01-18 02:12:26,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:12:26,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:26,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:26,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:27,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:27,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280704276] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:27,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:27,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:12:27,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158949420] [2022-01-18 02:12:27,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:27,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:12:27,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:12:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:12:27,527 INFO L87 Difference]: Start difference. First operand 2312 states and 6543 transitions. Second operand has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:28,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:28,856 INFO L93 Difference]: Finished difference Result 3439 states and 9432 transitions. [2022-01-18 02:12:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 02:12:28,856 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:28,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:28,860 INFO L225 Difference]: With dead ends: 3439 [2022-01-18 02:12:28,860 INFO L226 Difference]: Without dead ends: 3328 [2022-01-18 02:12:28,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=847, Invalid=3575, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 02:12:28,861 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 547 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:28,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 2496 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:12:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2022-01-18 02:12:28,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 2268. [2022-01-18 02:12:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2267 states have (on average 2.8222320247022497) internal successors, (6398), 2267 states have internal predecessors, (6398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 6398 transitions. [2022-01-18 02:12:28,889 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 6398 transitions. Word has length 72 [2022-01-18 02:12:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:28,889 INFO L470 AbstractCegarLoop]: Abstraction has 2268 states and 6398 transitions. [2022-01-18 02:12:28,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.323529411764706) internal successors, (113), 34 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 6398 transitions. [2022-01-18 02:12:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:28,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:28,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:28,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:29,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,225 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:29,115 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1677775125, now seen corresponding path program 173 times [2022-01-18 02:12:29,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:29,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241850885] [2022-01-18 02:12:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:29,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:29,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:29,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241850885] [2022-01-18 02:12:29,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241850885] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:29,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962716544] [2022-01-18 02:12:29,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:12:29,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:29,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:29,318 INFO L229 MonitoredProcess]: Starting monitored process 226 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:29,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Waiting until timeout for monitored process [2022-01-18 02:12:29,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:12:29,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:29,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:29,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:29,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:30,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962716544] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:30,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:30,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:30,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360382037] [2022-01-18 02:12:30,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:30,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:30,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:30,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:30,041 INFO L87 Difference]: Start difference. First operand 2268 states and 6398 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:31,131 INFO L93 Difference]: Finished difference Result 3354 states and 9107 transitions. [2022-01-18 02:12:31,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 02:12:31,131 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:31,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:31,136 INFO L225 Difference]: With dead ends: 3354 [2022-01-18 02:12:31,136 INFO L226 Difference]: Without dead ends: 3252 [2022-01-18 02:12:31,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=696, Invalid=4134, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 02:12:31,137 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 538 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:31,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 2721 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:12:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2022-01-18 02:12:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 2328. [2022-01-18 02:12:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 2327 states have (on average 2.8255264288783843) internal successors, (6575), 2327 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 6575 transitions. [2022-01-18 02:12:31,164 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 6575 transitions. Word has length 72 [2022-01-18 02:12:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:31,164 INFO L470 AbstractCegarLoop]: Abstraction has 2328 states and 6575 transitions. [2022-01-18 02:12:31,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 6575 transitions. [2022-01-18 02:12:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:31,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:31,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:31,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:31,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,226 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:31,371 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:31,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1979048801, now seen corresponding path program 174 times [2022-01-18 02:12:31,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:31,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409609123] [2022-01-18 02:12:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:31,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:31,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:31,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409609123] [2022-01-18 02:12:31,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409609123] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:31,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802789511] [2022-01-18 02:12:31,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:12:31,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:31,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:31,522 INFO L229 MonitoredProcess]: Starting monitored process 227 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:31,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Waiting until timeout for monitored process [2022-01-18 02:12:31,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:12:31,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:31,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:31,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:32,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:32,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802789511] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:32,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:32,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:32,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863682413] [2022-01-18 02:12:32,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:32,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:32,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:32,624 INFO L87 Difference]: Start difference. First operand 2328 states and 6575 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:34,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:34,356 INFO L93 Difference]: Finished difference Result 3944 states and 10556 transitions. [2022-01-18 02:12:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:12:34,356 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:34,362 INFO L225 Difference]: With dead ends: 3944 [2022-01-18 02:12:34,362 INFO L226 Difference]: Without dead ends: 3842 [2022-01-18 02:12:34,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1287, Invalid=7269, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 02:12:34,363 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 881 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:34,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 3039 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:12:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-01-18 02:12:34,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 2344. [2022-01-18 02:12:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8301323090055486) internal successors, (6631), 2343 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6631 transitions. [2022-01-18 02:12:34,404 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6631 transitions. Word has length 72 [2022-01-18 02:12:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:34,405 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6631 transitions. [2022-01-18 02:12:34,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6631 transitions. [2022-01-18 02:12:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:34,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:34,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:34,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:34,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2022-01-18 02:12:34,623 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:34,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash -545600493, now seen corresponding path program 175 times [2022-01-18 02:12:34,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:34,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756146258] [2022-01-18 02:12:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:34,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:34,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:34,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756146258] [2022-01-18 02:12:34,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756146258] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:34,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230723010] [2022-01-18 02:12:34,849 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:12:34,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:34,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:34,850 INFO L229 MonitoredProcess]: Starting monitored process 228 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:34,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Waiting until timeout for monitored process [2022-01-18 02:12:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:35,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:35,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:35,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:35,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230723010] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:35,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:35,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:35,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33242353] [2022-01-18 02:12:35,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:35,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:35,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:35,791 INFO L87 Difference]: Start difference. First operand 2344 states and 6631 transitions. Second operand has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:37,875 INFO L93 Difference]: Finished difference Result 3725 states and 10107 transitions. [2022-01-18 02:12:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 02:12:37,875 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:37,880 INFO L225 Difference]: With dead ends: 3725 [2022-01-18 02:12:37,880 INFO L226 Difference]: Without dead ends: 3548 [2022-01-18 02:12:37,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1118, Invalid=6022, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 02:12:37,881 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 744 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:37,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 3059 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:12:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2022-01-18 02:12:37,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 2324. [2022-01-18 02:12:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2323 states have (on average 2.8222126560482135) internal successors, (6556), 2323 states have internal predecessors, (6556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:37,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6556 transitions. [2022-01-18 02:12:37,911 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 6556 transitions. Word has length 72 [2022-01-18 02:12:37,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:37,912 INFO L470 AbstractCegarLoop]: Abstraction has 2324 states and 6556 transitions. [2022-01-18 02:12:37,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:37,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 6556 transitions. [2022-01-18 02:12:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:37,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:37,914 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] [2022-01-18 02:12:37,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:38,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2022-01-18 02:12:38,128 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1253464659, now seen corresponding path program 176 times [2022-01-18 02:12:38,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:38,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491591768] [2022-01-18 02:12:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:38,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:38,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:38,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491591768] [2022-01-18 02:12:38,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491591768] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:38,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851377814] [2022-01-18 02:12:38,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:12:38,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:38,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:38,379 INFO L229 MonitoredProcess]: Starting monitored process 229 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:38,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Waiting until timeout for monitored process [2022-01-18 02:12:38,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:12:38,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:38,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:38,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:38,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:39,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851377814] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:39,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:39,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:39,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485163689] [2022-01-18 02:12:39,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:39,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:39,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:39,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:39,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:39,460 INFO L87 Difference]: Start difference. First operand 2324 states and 6556 transitions. Second operand has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:41,093 INFO L93 Difference]: Finished difference Result 3382 states and 9270 transitions. [2022-01-18 02:12:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:12:41,093 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:41,098 INFO L225 Difference]: With dead ends: 3382 [2022-01-18 02:12:41,098 INFO L226 Difference]: Without dead ends: 3235 [2022-01-18 02:12:41,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=753, Invalid=4503, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 02:12:41,099 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 710 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:41,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 2611 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:12:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-01-18 02:12:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2332. [2022-01-18 02:12:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 2.821964821964822) internal successors, (6578), 2331 states have internal predecessors, (6578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 6578 transitions. [2022-01-18 02:12:41,125 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 6578 transitions. Word has length 72 [2022-01-18 02:12:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:41,125 INFO L470 AbstractCegarLoop]: Abstraction has 2332 states and 6578 transitions. [2022-01-18 02:12:41,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 6578 transitions. [2022-01-18 02:12:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:41,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:41,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:41,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:41,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2022-01-18 02:12:41,340 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:41,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash -366107597, now seen corresponding path program 177 times [2022-01-18 02:12:41,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:41,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951628934] [2022-01-18 02:12:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:41,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:41,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:41,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951628934] [2022-01-18 02:12:41,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951628934] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:41,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65438382] [2022-01-18 02:12:41,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:12:41,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:41,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:41,564 INFO L229 MonitoredProcess]: Starting monitored process 230 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:41,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Waiting until timeout for monitored process [2022-01-18 02:12:41,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:12:41,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:41,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:41,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:42,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:42,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65438382] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:42,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:42,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:42,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342384218] [2022-01-18 02:12:42,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:42,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:42,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:42,643 INFO L87 Difference]: Start difference. First operand 2332 states and 6578 transitions. Second operand has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:44,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:44,541 INFO L93 Difference]: Finished difference Result 3954 states and 10689 transitions. [2022-01-18 02:12:44,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 02:12:44,541 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:44,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:44,549 INFO L225 Difference]: With dead ends: 3954 [2022-01-18 02:12:44,549 INFO L226 Difference]: Without dead ends: 3807 [2022-01-18 02:12:44,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1294, Invalid=7448, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 02:12:44,550 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 875 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:44,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 3014 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:12:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2022-01-18 02:12:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 2336. [2022-01-18 02:12:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2335 states have (on average 2.8235546038543897) internal successors, (6593), 2335 states have internal predecessors, (6593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 6593 transitions. [2022-01-18 02:12:44,597 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 6593 transitions. Word has length 72 [2022-01-18 02:12:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:44,597 INFO L470 AbstractCegarLoop]: Abstraction has 2336 states and 6593 transitions. [2022-01-18 02:12:44,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 6593 transitions. [2022-01-18 02:12:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:44,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:44,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:44,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:44,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235,230 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:44,803 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:44,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1392993443, now seen corresponding path program 178 times [2022-01-18 02:12:44,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:44,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083641870] [2022-01-18 02:12:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:44,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:45,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:45,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083641870] [2022-01-18 02:12:45,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083641870] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:45,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413435409] [2022-01-18 02:12:45,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:12:45,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:45,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:45,012 INFO L229 MonitoredProcess]: Starting monitored process 231 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:45,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Waiting until timeout for monitored process [2022-01-18 02:12:45,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:12:45,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:45,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:45,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:45,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:45,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413435409] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:45,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:45,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:45,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417979199] [2022-01-18 02:12:45,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:45,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:45,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:45,868 INFO L87 Difference]: Start difference. First operand 2336 states and 6593 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:47,758 INFO L93 Difference]: Finished difference Result 3594 states and 9760 transitions. [2022-01-18 02:12:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 02:12:47,759 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:47,763 INFO L225 Difference]: With dead ends: 3594 [2022-01-18 02:12:47,764 INFO L226 Difference]: Without dead ends: 3492 [2022-01-18 02:12:47,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=966, Invalid=5840, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 02:12:47,764 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 653 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:47,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 3162 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:12:47,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-01-18 02:12:47,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 2300. [2022-01-18 02:12:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 2.8229665071770333) internal successors, (6490), 2299 states have internal predecessors, (6490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 6490 transitions. [2022-01-18 02:12:47,792 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 6490 transitions. Word has length 72 [2022-01-18 02:12:47,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:47,792 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 6490 transitions. [2022-01-18 02:12:47,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:47,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 6490 transitions. [2022-01-18 02:12:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:47,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:47,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:47,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:48,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2022-01-18 02:12:48,001 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1525695739, now seen corresponding path program 179 times [2022-01-18 02:12:48,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:48,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648636433] [2022-01-18 02:12:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:48,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:48,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648636433] [2022-01-18 02:12:48,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648636433] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052608101] [2022-01-18 02:12:48,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:12:48,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:48,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:48,201 INFO L229 MonitoredProcess]: Starting monitored process 232 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:48,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Waiting until timeout for monitored process [2022-01-18 02:12:48,377 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:12:48,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:48,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:48,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:48,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:49,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052608101] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:49,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:49,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:49,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17135468] [2022-01-18 02:12:49,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:49,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:49,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:49,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:49,270 INFO L87 Difference]: Start difference. First operand 2300 states and 6490 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:50,574 INFO L93 Difference]: Finished difference Result 4271 states and 11640 transitions. [2022-01-18 02:12:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:12:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:50,582 INFO L225 Difference]: With dead ends: 4271 [2022-01-18 02:12:50,583 INFO L226 Difference]: Without dead ends: 4169 [2022-01-18 02:12:50,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=970, Invalid=5350, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 02:12:50,584 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 749 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:50,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2601 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:12:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2022-01-18 02:12:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 2332. [2022-01-18 02:12:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 2.8322608322608325) internal successors, (6602), 2331 states have internal predecessors, (6602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 6602 transitions. [2022-01-18 02:12:50,625 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 6602 transitions. Word has length 72 [2022-01-18 02:12:50,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:50,625 INFO L470 AbstractCegarLoop]: Abstraction has 2332 states and 6602 transitions. [2022-01-18 02:12:50,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 6602 transitions. [2022-01-18 02:12:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:50,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:50,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:50,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:50,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2022-01-18 02:12:50,843 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash -92247431, now seen corresponding path program 180 times [2022-01-18 02:12:50,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:50,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511222864] [2022-01-18 02:12:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:50,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:51,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511222864] [2022-01-18 02:12:51,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511222864] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570639736] [2022-01-18 02:12:51,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:12:51,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:51,060 INFO L229 MonitoredProcess]: Starting monitored process 233 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:51,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Waiting until timeout for monitored process [2022-01-18 02:12:51,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:12:51,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:51,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:51,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:51,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:51,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570639736] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:51,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:51,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:51,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77446879] [2022-01-18 02:12:51,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:51,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:51,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:51,872 INFO L87 Difference]: Start difference. First operand 2332 states and 6602 transitions. Second operand has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:54,696 INFO L93 Difference]: Finished difference Result 4224 states and 11466 transitions. [2022-01-18 02:12:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:12:54,696 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:54,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:54,702 INFO L225 Difference]: With dead ends: 4224 [2022-01-18 02:12:54,702 INFO L226 Difference]: Without dead ends: 4062 [2022-01-18 02:12:54,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3144 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1417, Invalid=8483, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:12:54,703 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 892 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:54,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 2754 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:12:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2022-01-18 02:12:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 2300. [2022-01-18 02:12:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 2.8229665071770333) internal successors, (6490), 2299 states have internal predecessors, (6490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 6490 transitions. [2022-01-18 02:12:54,733 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 6490 transitions. Word has length 72 [2022-01-18 02:12:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:54,733 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 6490 transitions. [2022-01-18 02:12:54,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 6490 transitions. [2022-01-18 02:12:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:54,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:54,736 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] [2022-01-18 02:12:54,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:54,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2022-01-18 02:12:54,947 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:54,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1881234477, now seen corresponding path program 181 times [2022-01-18 02:12:54,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:54,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608404960] [2022-01-18 02:12:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:54,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:55,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:55,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608404960] [2022-01-18 02:12:55,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608404960] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:55,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553369856] [2022-01-18 02:12:55,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:12:55,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:55,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:55,130 INFO L229 MonitoredProcess]: Starting monitored process 234 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:55,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Waiting until timeout for monitored process [2022-01-18 02:12:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:55,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:12:55,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:55,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:56,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553369856] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:56,100 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:56,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2022-01-18 02:12:56,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662169102] [2022-01-18 02:12:56,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:56,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:12:56,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:56,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:12:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:12:56,101 INFO L87 Difference]: Start difference. First operand 2300 states and 6490 transitions. Second operand has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:56,894 INFO L93 Difference]: Finished difference Result 3076 states and 8455 transitions. [2022-01-18 02:12:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:12:56,895 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:56,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:56,899 INFO L225 Difference]: With dead ends: 3076 [2022-01-18 02:12:56,899 INFO L226 Difference]: Without dead ends: 2899 [2022-01-18 02:12:56,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=466, Invalid=3074, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 02:12:56,900 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 465 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:56,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 2352 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:12:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2022-01-18 02:12:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2308. [2022-01-18 02:12:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 2.82271348071088) internal successors, (6512), 2307 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 6512 transitions. [2022-01-18 02:12:56,930 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 6512 transitions. Word has length 72 [2022-01-18 02:12:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:56,931 INFO L470 AbstractCegarLoop]: Abstraction has 2308 states and 6512 transitions. [2022-01-18 02:12:56,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.138888888888889) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 6512 transitions. [2022-01-18 02:12:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:56,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:56,934 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:56,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:57,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239,234 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:57,135 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:57,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1061268127, now seen corresponding path program 53 times [2022-01-18 02:12:57,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:57,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574511063] [2022-01-18 02:12:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:57,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:57,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:57,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574511063] [2022-01-18 02:12:57,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574511063] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:57,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510004687] [2022-01-18 02:12:57,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:12:57,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:57,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:57,407 INFO L229 MonitoredProcess]: Starting monitored process 235 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:57,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Waiting until timeout for monitored process [2022-01-18 02:12:57,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:12:57,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:12:57,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 02:12:57,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:12:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:57,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:12:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:58,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510004687] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:12:58,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:12:58,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-01-18 02:12:58,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100477718] [2022-01-18 02:12:58,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:12:58,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 02:12:58,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:12:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 02:12:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1758, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:12:58,314 INFO L87 Difference]: Start difference. First operand 2308 states and 6512 transitions. Second operand has 45 states, 45 states have (on average 3.2) internal successors, (144), 45 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:59,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:12:59,416 INFO L93 Difference]: Finished difference Result 3224 states and 8752 transitions. [2022-01-18 02:12:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 02:12:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.2) internal successors, (144), 45 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:12:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:12:59,420 INFO L225 Difference]: With dead ends: 3224 [2022-01-18 02:12:59,420 INFO L226 Difference]: Without dead ends: 3122 [2022-01-18 02:12:59,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=792, Invalid=5850, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:12:59,421 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 764 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:12:59,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 3078 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:12:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-01-18 02:12:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2308. [2022-01-18 02:12:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 2.82271348071088) internal successors, (6512), 2307 states have internal predecessors, (6512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 6512 transitions. [2022-01-18 02:12:59,447 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 6512 transitions. Word has length 72 [2022-01-18 02:12:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:12:59,447 INFO L470 AbstractCegarLoop]: Abstraction has 2308 states and 6512 transitions. [2022-01-18 02:12:59,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.2) internal successors, (144), 45 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:12:59,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 6512 transitions. [2022-01-18 02:12:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:12:59,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:12:59,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:12:59,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Forceful destruction successful, exit code 0 [2022-01-18 02:12:59,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,235 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:59,654 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:12:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:12:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1936378211, now seen corresponding path program 182 times [2022-01-18 02:12:59,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:12:59,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023675477] [2022-01-18 02:12:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:12:59,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:12:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:12:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:12:59,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:12:59,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023675477] [2022-01-18 02:12:59,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023675477] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:12:59,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225269862] [2022-01-18 02:12:59,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:12:59,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:12:59,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:12:59,888 INFO L229 MonitoredProcess]: Starting monitored process 236 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:12:59,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Waiting until timeout for monitored process [2022-01-18 02:13:00,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:13:00,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:13:00,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:13:00,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:13:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:13:00,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:13:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:13:00,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225269862] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:13:00,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:13:00,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:13:00,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548131303] [2022-01-18 02:13:00,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:13:00,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:13:00,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:00,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:13:00,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:13:00,602 INFO L87 Difference]: Start difference. First operand 2308 states and 6512 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:13:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:13:01,286 INFO L93 Difference]: Finished difference Result 2958 states and 8138 transitions. [2022-01-18 02:13:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 02:13:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:13:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:13:01,291 INFO L225 Difference]: With dead ends: 2958 [2022-01-18 02:13:01,291 INFO L226 Difference]: Without dead ends: 2907 [2022-01-18 02:13:01,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=399, Invalid=2051, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 02:13:01,291 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 280 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:01,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2302 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:13:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2022-01-18 02:13:01,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 2328. [2022-01-18 02:13:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 2327 states have (on average 2.8238074774387623) internal successors, (6571), 2327 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:13:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 6571 transitions. [2022-01-18 02:13:01,316 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 6571 transitions. Word has length 72 [2022-01-18 02:13:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:13:01,316 INFO L470 AbstractCegarLoop]: Abstraction has 2328 states and 6571 transitions. [2022-01-18 02:13:01,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:13:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 6571 transitions. [2022-01-18 02:13:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:13:01,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:01,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:01,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (236)] Forceful destruction successful, exit code 0 [2022-01-18 02:13:01,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,236 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:13:01,521 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:01,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1887397387, now seen corresponding path program 183 times [2022-01-18 02:13:01,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:01,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079757659] [2022-01-18 02:13:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:01,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:13:01,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:01,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079757659] [2022-01-18 02:13:01,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079757659] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:13:01,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506794404] [2022-01-18 02:13:01,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:13:01,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:13:01,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:13:01,738 INFO L229 MonitoredProcess]: Starting monitored process 237 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:13:01,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Waiting until timeout for monitored process [2022-01-18 02:13:01,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:13:01,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:13:01,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:13:01,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:13:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:13:02,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:13:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:13:02,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506794404] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:13:02,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:13:02,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 34 [2022-01-18 02:13:02,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870660039] [2022-01-18 02:13:02,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:13:02,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:13:02,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:02,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:13:02,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:13:02,851 INFO L87 Difference]: Start difference. First operand 2328 states and 6571 transitions. Second operand has 34 states, 34 states have (on average 3.3823529411764706) internal successors, (115), 34 states have internal predecessors, (115), 0 states have call successors, (0), 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 02:13:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:13:02,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:13:02,929 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 9 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:02,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 597 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:13:02,930 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 02:13:02,941 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:13:02,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (237)] Forceful destruction successful, exit code 0 [2022-01-18 02:13:02,966 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 02:13:03,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,237 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:13:03,131 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (2328states) and FLOYD_HOARE automaton (currently 5 states, 34 states before enhancement),while ReachableStatesComputation was computing reachable states (67 states constructed, input type IntersectNwa). [2022-01-18 02:13:03,132 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 02:13:03,132 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 02:13:03,134 INFO L732 BasicCegarLoop]: Path program histogram: [183, 53, 6, 1] [2022-01-18 02:13:03,135 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 02:13:03,135 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 02:13:03,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:13:03 BasicIcfg [2022-01-18 02:13:03,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 02:13:03,137 INFO L158 Benchmark]: Toolchain (without parser) took 904378.78ms. Allocated memory was 383.8MB in the beginning and 725.6MB in the end (delta: 341.8MB). Free memory was 329.9MB in the beginning and 511.4MB in the end (delta: -181.6MB). Peak memory consumption was 163.2MB. Max. memory is 16.0GB. [2022-01-18 02:13:03,137 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 383.8MB. Free memory is still 346.7MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:13:03,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.76ms. Allocated memory was 383.8MB in the beginning and 503.3MB in the end (delta: 119.5MB). Free memory was 329.7MB in the beginning and 475.7MB in the end (delta: -146.0MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. [2022-01-18 02:13:03,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.05ms. Allocated memory is still 503.3MB. Free memory was 475.7MB in the beginning and 474.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:13:03,137 INFO L158 Benchmark]: Boogie Preprocessor took 14.58ms. Allocated memory is still 503.3MB. Free memory was 474.7MB in the beginning and 473.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:13:03,137 INFO L158 Benchmark]: RCFGBuilder took 315.24ms. Allocated memory is still 503.3MB. Free memory was 473.6MB in the beginning and 457.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 02:13:03,137 INFO L158 Benchmark]: TraceAbstraction took 903760.29ms. Allocated memory was 503.3MB in the beginning and 725.6MB in the end (delta: 222.3MB). Free memory was 456.8MB in the beginning and 511.4MB in the end (delta: -54.6MB). Peak memory consumption was 169.8MB. Max. memory is 16.0GB. [2022-01-18 02:13:03,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 383.8MB. Free memory is still 346.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 260.76ms. Allocated memory was 383.8MB in the beginning and 503.3MB in the end (delta: 119.5MB). Free memory was 329.7MB in the beginning and 475.7MB in the end (delta: -146.0MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.05ms. Allocated memory is still 503.3MB. Free memory was 475.7MB in the beginning and 474.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 14.58ms. Allocated memory is still 503.3MB. Free memory was 474.7MB in the beginning and 473.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 315.24ms. Allocated memory is still 503.3MB. Free memory was 473.6MB in the beginning and 457.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 903760.29ms. Allocated memory was 503.3MB in the beginning and 725.6MB in the end (delta: 222.3MB). Free memory was 456.8MB in the beginning and 511.4MB in the end (delta: -54.6MB). Peak memory consumption was 169.8MB. 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: 76]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (2328states) and FLOYD_HOARE automaton (currently 5 states, 34 states before enhancement),while ReachableStatesComputation was computing reachable states (67 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 70]: 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 (2328states) and FLOYD_HOARE automaton (currently 5 states, 34 states before enhancement),while ReachableStatesComputation was computing reachable states (67 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 71]: 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 (2328states) and FLOYD_HOARE automaton (currently 5 states, 34 states before enhancement),while ReachableStatesComputation was computing reachable states (67 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 903.7s, OverallIterations: 243, TraceHistogramMax: 2, PathProgramHistogramMax: 183, EmptinessCheckTime: 0.6s, AutomataDifference: 568.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 213153 SdHoareTripleChecker+Valid, 130.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213153 mSDsluCounter, 819432 SdHoareTripleChecker+Invalid, 111.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 815086 mSDsCounter, 23628 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 386473 IncrementalHoareTripleChecker+Invalid, 410101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23628 mSolverCounterUnsat, 45181 mSDtfsCounter, 386473 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51182 GetRequests, 28142 SyntacticMatches, 707 SemanticMatches, 22333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867870 ImplicationChecksByTransitivity, 531.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2344occurred in iteration=233, InterpolantAutomatonStates: 16951, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 242 MinimizatonAttempts, 326203 StatesRemovedByMinimization, 241 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 245.8s InterpolantComputationTime, 34218 NumberOfCodeBlocks, 33984 NumberOfCodeBlocksAsserted, 701 NumberOfCheckSat, 50395 ConstructedInterpolants, 0 QuantifiedInterpolants, 457495 SizeOfPredicates, 2928 NumberOfNonLiveVariables, 37971 ConjunctsInSsa, 5618 ConjunctsInUnsatCore, 715 InterpolantComputations, 7 PerfectInterpolantSequences, 0/1851 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