/usr/bin/java -Xmx8000000000 -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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:54:15,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:54:15,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:54:15,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-09-16 11:54:15,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:54:15,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:54:15,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:54:15,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:54:15,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:54:15,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:54:15,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:54:15,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:54:15,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:54:15,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:54:15,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:54:15,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:54:15,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:54:15,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:54:15,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:54:15,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:54:15,412 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-PN-NoLbe.epf [2022-09-16 11:54:15,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:54:15,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:54:15,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:54:15,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:54:15,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:54:15,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:54:15,441 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:54:15,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:54:15,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:54:15,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:54:15,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:54:15,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:54:15,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:54:15,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:54:15,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:54:15,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:54:15,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:54:15,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:54:15,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:54:15,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:54:15,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:54:15,444 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:54:15,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:54:15,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:54:15,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:54:15,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:54:15,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:54:15,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:54:15,666 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:54:15,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-09-16 11:54:15,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97fbf9bc/a749ed57663e4a4fbd192f7068dd9778/FLAG577c3005c [2022-09-16 11:54:16,093 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:54:16,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-09-16 11:54:16,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97fbf9bc/a749ed57663e4a4fbd192f7068dd9778/FLAG577c3005c [2022-09-16 11:54:16,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c97fbf9bc/a749ed57663e4a4fbd192f7068dd9778 [2022-09-16 11:54:16,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:54:16,540 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:54:16,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:54:16,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:54:16,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:54:16,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4962b9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16, skipping insertion in model container [2022-09-16 11:54:16,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:54:16,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:54:16,715 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-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-09-16 11:54:16,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:54:16,737 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:54:16,759 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-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-09-16 11:54:16,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:54:16,771 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:54:16,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16 WrapperNode [2022-09-16 11:54:16,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:54:16,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:54:16,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:54:16,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:54:16,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,808 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 353 [2022-09-16 11:54:16,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:54:16,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:54:16,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:54:16,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:54:16,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:54:16,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:54:16,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:54:16,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:54:16,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (1/1) ... [2022-09-16 11:54:16,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:54:16,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:16,878 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) [2022-09-16 11:54:16,883 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 [2022-09-16 11:54:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:54:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:54:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:54:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:54:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:54:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:54:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:54:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:54:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:54:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:54:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:54:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:54:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:54:16,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:54:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:54:16,908 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:54:16,976 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:54:16,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:54:17,485 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:54:17,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:54:17,503 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:54:17,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:54:17 BoogieIcfgContainer [2022-09-16 11:54:17,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:54:17,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:54:17,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:54:17,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:54:17,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:54:16" (1/3) ... [2022-09-16 11:54:17,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5667b1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:54:17, skipping insertion in model container [2022-09-16 11:54:17,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:16" (2/3) ... [2022-09-16 11:54:17,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5667b1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:54:17, skipping insertion in model container [2022-09-16 11:54:17,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:54:17" (3/3) ... [2022-09-16 11:54:17,514 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2022-09-16 11:54:17,526 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:54:17,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-09-16 11:54:17,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:54:17,637 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:54:17,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 501 transitions, 1026 flow [2022-09-16 11:54:17,815 INFO L130 PetriNetUnfolder]: 39/498 cut-off events. [2022-09-16 11:54:17,815 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:54:17,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 39/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1047 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-09-16 11:54:17,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 472 places, 501 transitions, 1026 flow [2022-09-16 11:54:17,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 473 transitions, 964 flow [2022-09-16 11:54:17,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:54:17,854 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@399fac32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:54:17,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-09-16 11:54:17,864 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-09-16 11:54:17,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:54:17,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:17,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:17,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:54:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash -789370683, now seen corresponding path program 1 times [2022-09-16 11:54:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:17,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605242702] [2022-09-16 11:54:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:17,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:18,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605242702] [2022-09-16 11:54:18,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605242702] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:18,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:18,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:54:18,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986751038] [2022-09-16 11:54:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:18,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:54:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:54:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:54:18,139 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-09-16 11:54:18,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 473 transitions, 964 flow. Second operand has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:18,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:18,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-09-16 11:54:18,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:18,408 INFO L130 PetriNetUnfolder]: 31/810 cut-off events. [2022-09-16 11:54:18,408 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-09-16 11:54:18,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 810 events. 31/810 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3131 event pairs, 0 based on Foata normal form. 44/720 useless extension candidates. Maximal degree in co-relation 550. Up to 45 conditions per place. [2022-09-16 11:54:18,427 INFO L137 encePairwiseOnDemand]: 459/501 looper letters, 60 selfloop transitions, 14 changer transitions 8/483 dead transitions. [2022-09-16 11:54:18,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 483 transitions, 1150 flow [2022-09-16 11:54:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:54:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:54:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2293 transitions. [2022-09-16 11:54:18,447 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9153692614770459 [2022-09-16 11:54:18,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2293 transitions. [2022-09-16 11:54:18,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2293 transitions. [2022-09-16 11:54:18,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:18,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2293 transitions. [2022-09-16 11:54:18,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 458.6) internal successors, (2293), 5 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:18,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:18,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:18,473 INFO L175 Difference]: Start difference. First operand has 445 places, 473 transitions, 964 flow. Second operand 5 states and 2293 transitions. [2022-09-16 11:54:18,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 483 transitions, 1150 flow [2022-09-16 11:54:18,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 483 transitions, 1126 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:54:18,489 INFO L231 Difference]: Finished difference. Result has 446 places, 454 transitions, 996 flow [2022-09-16 11:54:18,491 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=996, PETRI_PLACES=446, PETRI_TRANSITIONS=454} [2022-09-16 11:54:18,494 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 1 predicate places. [2022-09-16 11:54:18,495 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 454 transitions, 996 flow [2022-09-16 11:54:18,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:18,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:18,496 INFO L208 CegarLoopForPetriNet]: 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] [2022-09-16 11:54:18,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:54:18,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:54:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash -955416257, now seen corresponding path program 1 times [2022-09-16 11:54:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:18,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295956669] [2022-09-16 11:54:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:18,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:18,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295956669] [2022-09-16 11:54:18,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295956669] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:18,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147818597] [2022-09-16 11:54:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:18,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:18,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:18,651 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) [2022-09-16 11:54:18,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:54:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:18,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:54:18,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:18,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:54:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:18,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147818597] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:54:18,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:54:18,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:54:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967398757] [2022-09-16 11:54:18,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:54:18,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:54:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:54:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:54:18,925 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-09-16 11:54:18,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 454 transitions, 996 flow. Second operand has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:18,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:18,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-09-16 11:54:18,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:19,576 INFO L130 PetriNetUnfolder]: 76/1877 cut-off events. [2022-09-16 11:54:19,576 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-09-16 11:54:19,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1877 events. 76/1877 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11480 event pairs, 0 based on Foata normal form. 9/1591 useless extension candidates. Maximal degree in co-relation 1368. Up to 36 conditions per place. [2022-09-16 11:54:19,606 INFO L137 encePairwiseOnDemand]: 478/501 looper letters, 114 selfloop transitions, 62 changer transitions 0/577 dead transitions. [2022-09-16 11:54:19,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 577 transitions, 1696 flow [2022-09-16 11:54:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:54:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:54:19,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 8015 transitions. [2022-09-16 11:54:19,618 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8887779995564427 [2022-09-16 11:54:19,618 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 8015 transitions. [2022-09-16 11:54:19,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 8015 transitions. [2022-09-16 11:54:19,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:19,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 8015 transitions. [2022-09-16 11:54:19,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 445.27777777777777) internal successors, (8015), 18 states have internal predecessors, (8015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:19,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:19,735 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:19,736 INFO L175 Difference]: Start difference. First operand has 446 places, 454 transitions, 996 flow. Second operand 18 states and 8015 transitions. [2022-09-16 11:54:19,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 577 transitions, 1696 flow [2022-09-16 11:54:19,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 577 transitions, 1688 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:54:19,746 INFO L231 Difference]: Finished difference. Result has 458 places, 496 transitions, 1358 flow [2022-09-16 11:54:19,747 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1358, PETRI_PLACES=458, PETRI_TRANSITIONS=496} [2022-09-16 11:54:19,747 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 13 predicate places. [2022-09-16 11:54:19,748 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 496 transitions, 1358 flow [2022-09-16 11:54:19,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:19,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:19,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-09-16 11:54:19,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:54:19,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:19,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:54:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash 446868092, now seen corresponding path program 1 times [2022-09-16 11:54:19,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:19,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355190775] [2022-09-16 11:54:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:19,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:20,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355190775] [2022-09-16 11:54:20,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355190775] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:20,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942416383] [2022-09-16 11:54:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:20,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:20,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:20,092 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) [2022-09-16 11:54:20,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:54:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:20,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:54:20,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:20,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:54:20,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942416383] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:20,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:54:20,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:54:20,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192101590] [2022-09-16 11:54:20,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:20,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:54:20,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:54:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:54:20,228 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-09-16 11:54:20,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 496 transitions, 1358 flow. Second operand has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:20,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-09-16 11:54:20,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:20,612 INFO L130 PetriNetUnfolder]: 76/1865 cut-off events. [2022-09-16 11:54:20,613 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-09-16 11:54:20,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1865 events. 76/1865 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11399 event pairs, 0 based on Foata normal form. 12/1582 useless extension candidates. Maximal degree in co-relation 1722. Up to 72 conditions per place. [2022-09-16 11:54:20,710 INFO L137 encePairwiseOnDemand]: 484/501 looper letters, 61 selfloop transitions, 43 changer transitions 0/505 dead transitions. [2022-09-16 11:54:20,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 505 transitions, 1539 flow [2022-09-16 11:54:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:54:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:54:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3119 transitions. [2022-09-16 11:54:20,715 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.889364128885087 [2022-09-16 11:54:20,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3119 transitions. [2022-09-16 11:54:20,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3119 transitions. [2022-09-16 11:54:20,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:20,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3119 transitions. [2022-09-16 11:54:20,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.57142857142856) internal successors, (3119), 7 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,726 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,726 INFO L175 Difference]: Start difference. First operand has 458 places, 496 transitions, 1358 flow. Second operand 7 states and 3119 transitions. [2022-09-16 11:54:20,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 505 transitions, 1539 flow [2022-09-16 11:54:20,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 505 transitions, 1423 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 11:54:20,739 INFO L231 Difference]: Finished difference. Result has 452 places, 484 transitions, 1247 flow [2022-09-16 11:54:20,739 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1247, PETRI_PLACES=452, PETRI_TRANSITIONS=484} [2022-09-16 11:54:20,741 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 7 predicate places. [2022-09-16 11:54:20,742 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 484 transitions, 1247 flow [2022-09-16 11:54:20,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:20,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:20,753 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:20,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:54:20,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:54:20,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:54:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:20,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1481190213, now seen corresponding path program 2 times [2022-09-16 11:54:20,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:20,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643859470] [2022-09-16 11:54:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:20,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:21,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:21,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643859470] [2022-09-16 11:54:21,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643859470] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:21,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594556299] [2022-09-16 11:54:21,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:54:21,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:21,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:21,096 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) [2022-09-16 11:54:21,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:54:21,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:54:21,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:54:21,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:54:21,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:54:21,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:54:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:54:21,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594556299] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:54:21,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:54:21,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:54:21,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937283489] [2022-09-16 11:54:21,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:54:21,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:54:21,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:21,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:54:21,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:54:21,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 501 [2022-09-16 11:54:21,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 484 transitions, 1247 flow. Second operand has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:21,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:21,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 501 [2022-09-16 11:54:21,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:23,564 INFO L130 PetriNetUnfolder]: 1086/11053 cut-off events. [2022-09-16 11:54:23,565 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2022-09-16 11:54:23,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 11053 events. 1086/11053 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 124503 event pairs, 392 based on Foata normal form. 6/8588 useless extension candidates. Maximal degree in co-relation 10285. Up to 189 conditions per place. [2022-09-16 11:54:23,758 INFO L137 encePairwiseOnDemand]: 474/501 looper letters, 203 selfloop transitions, 81 changer transitions 0/659 dead transitions. [2022-09-16 11:54:23,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 659 transitions, 2268 flow [2022-09-16 11:54:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:54:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:54:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10106 transitions. [2022-09-16 11:54:23,773 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8404856952761144 [2022-09-16 11:54:23,773 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10106 transitions. [2022-09-16 11:54:23,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10106 transitions. [2022-09-16 11:54:23,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:23,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10106 transitions. [2022-09-16 11:54:23,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 421.0833333333333) internal successors, (10106), 24 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:23,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:23,808 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:23,808 INFO L175 Difference]: Start difference. First operand has 452 places, 484 transitions, 1247 flow. Second operand 24 states and 10106 transitions. [2022-09-16 11:54:23,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 659 transitions, 2268 flow [2022-09-16 11:54:23,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 659 transitions, 2177 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 11:54:23,818 INFO L231 Difference]: Finished difference. Result has 464 places, 500 transitions, 1410 flow [2022-09-16 11:54:23,819 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1410, PETRI_PLACES=464, PETRI_TRANSITIONS=500} [2022-09-16 11:54:23,821 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 19 predicate places. [2022-09-16 11:54:23,821 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 500 transitions, 1410 flow [2022-09-16 11:54:23,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:23,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:23,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:23,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:54:24,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:24,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:54:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:24,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1744759366, now seen corresponding path program 1 times [2022-09-16 11:54:24,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:24,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524572332] [2022-09-16 11:54:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:24,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524572332] [2022-09-16 11:54:24,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524572332] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:24,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:24,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:54:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288784821] [2022-09-16 11:54:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:24,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:54:24,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:24,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:54:24,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:54:24,140 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-09-16 11:54:24,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 500 transitions, 1410 flow. Second operand has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:24,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:24,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-09-16 11:54:24,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:27,187 INFO L130 PetriNetUnfolder]: 2207/20708 cut-off events. [2022-09-16 11:54:27,187 INFO L131 PetriNetUnfolder]: For 628/718 co-relation queries the response was YES. [2022-09-16 11:54:27,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24065 conditions, 20708 events. 2207/20708 cut-off events. For 628/718 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 257241 event pairs, 912 based on Foata normal form. 0/16251 useless extension candidates. Maximal degree in co-relation 2664. Up to 1788 conditions per place. [2022-09-16 11:54:27,509 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 158 selfloop transitions, 43 changer transitions 0/602 dead transitions. [2022-09-16 11:54:27,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 602 transitions, 2210 flow [2022-09-16 11:54:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:54:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:54:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4796 transitions. [2022-09-16 11:54:27,520 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8702594810379242 [2022-09-16 11:54:27,521 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4796 transitions. [2022-09-16 11:54:27,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4796 transitions. [2022-09-16 11:54:27,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:27,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4796 transitions. [2022-09-16 11:54:27,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 436.0) internal successors, (4796), 11 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) [2022-09-16 11:54:27,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:27,543 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:27,543 INFO L175 Difference]: Start difference. First operand has 464 places, 500 transitions, 1410 flow. Second operand 11 states and 4796 transitions. [2022-09-16 11:54:27,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 602 transitions, 2210 flow [2022-09-16 11:54:27,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 602 transitions, 2030 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-09-16 11:54:27,555 INFO L231 Difference]: Finished difference. Result has 462 places, 517 transitions, 1467 flow [2022-09-16 11:54:27,556 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1467, PETRI_PLACES=462, PETRI_TRANSITIONS=517} [2022-09-16 11:54:27,559 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 17 predicate places. [2022-09-16 11:54:27,559 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 517 transitions, 1467 flow [2022-09-16 11:54:27,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:27,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:27,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:27,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:54:27,561 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:54:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1203227791, now seen corresponding path program 1 times [2022-09-16 11:54:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:27,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924732121] [2022-09-16 11:54:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:27,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:27,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924732121] [2022-09-16 11:54:27,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924732121] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:27,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:27,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:54:27,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496915612] [2022-09-16 11:54:27,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:27,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:54:27,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:27,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:54:27,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:54:27,681 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-09-16 11:54:27,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 517 transitions, 1467 flow. Second operand has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 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) [2022-09-16 11:54:27,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:27,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-09-16 11:54:27,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:29,774 INFO L130 PetriNetUnfolder]: 1944/13030 cut-off events. [2022-09-16 11:54:29,774 INFO L131 PetriNetUnfolder]: For 1772/1856 co-relation queries the response was YES. [2022-09-16 11:54:29,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16937 conditions, 13030 events. 1944/13030 cut-off events. For 1772/1856 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 143739 event pairs, 921 based on Foata normal form. 84/10466 useless extension candidates. Maximal degree in co-relation 10919. Up to 1980 conditions per place. [2022-09-16 11:54:30,102 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 154 selfloop transitions, 43 changer transitions 0/600 dead transitions. [2022-09-16 11:54:30,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 600 transitions, 2135 flow [2022-09-16 11:54:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:54:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:54:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4792 transitions. [2022-09-16 11:54:30,114 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8695336599528216 [2022-09-16 11:54:30,115 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4792 transitions. [2022-09-16 11:54:30,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4792 transitions. [2022-09-16 11:54:30,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:30,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4792 transitions. [2022-09-16 11:54:30,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 435.6363636363636) internal successors, (4792), 11 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:30,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:30,139 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:30,139 INFO L175 Difference]: Start difference. First operand has 462 places, 517 transitions, 1467 flow. Second operand 11 states and 4792 transitions. [2022-09-16 11:54:30,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 600 transitions, 2135 flow [2022-09-16 11:54:30,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 600 transitions, 2130 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:54:30,157 INFO L231 Difference]: Finished difference. Result has 472 places, 519 transitions, 1560 flow [2022-09-16 11:54:30,158 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1560, PETRI_PLACES=472, PETRI_TRANSITIONS=519} [2022-09-16 11:54:30,160 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 27 predicate places. [2022-09-16 11:54:30,160 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 519 transitions, 1560 flow [2022-09-16 11:54:30,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 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) [2022-09-16 11:54:30,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:30,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:30,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:54:30,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:54:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:30,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1859295929, now seen corresponding path program 1 times [2022-09-16 11:54:30,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:30,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227429149] [2022-09-16 11:54:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:30,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:30,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227429149] [2022-09-16 11:54:30,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227429149] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:30,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:30,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:54:30,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546301244] [2022-09-16 11:54:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:30,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:54:30,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:54:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:54:30,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 501 [2022-09-16 11:54:30,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 519 transitions, 1560 flow. Second operand has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:30,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:30,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 501 [2022-09-16 11:54:30,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:33,826 INFO L130 PetriNetUnfolder]: 2700/16604 cut-off events. [2022-09-16 11:54:33,827 INFO L131 PetriNetUnfolder]: For 3635/3761 co-relation queries the response was YES. [2022-09-16 11:54:33,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22361 conditions, 16604 events. 2700/16604 cut-off events. For 3635/3761 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 182611 event pairs, 1144 based on Foata normal form. 126/13497 useless extension candidates. Maximal degree in co-relation 15086. Up to 2934 conditions per place. [2022-09-16 11:54:34,046 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 153 selfloop transitions, 43 changer transitions 0/598 dead transitions. [2022-09-16 11:54:34,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 598 transitions, 2218 flow [2022-09-16 11:54:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:54:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:54:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4758 transitions. [2022-09-16 11:54:34,056 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8633641807294502 [2022-09-16 11:54:34,056 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4758 transitions. [2022-09-16 11:54:34,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4758 transitions. [2022-09-16 11:54:34,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:34,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4758 transitions. [2022-09-16 11:54:34,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 432.54545454545456) internal successors, (4758), 11 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:34,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:34,071 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:34,071 INFO L175 Difference]: Start difference. First operand has 472 places, 519 transitions, 1560 flow. Second operand 11 states and 4758 transitions. [2022-09-16 11:54:34,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 598 transitions, 2218 flow [2022-09-16 11:54:34,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 598 transitions, 2178 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:54:34,089 INFO L231 Difference]: Finished difference. Result has 479 places, 521 transitions, 1618 flow [2022-09-16 11:54:34,090 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1618, PETRI_PLACES=479, PETRI_TRANSITIONS=521} [2022-09-16 11:54:34,091 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 34 predicate places. [2022-09-16 11:54:34,091 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 521 transitions, 1618 flow [2022-09-16 11:54:34,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:34,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:34,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:34,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:54:34,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:54:34,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1842500036, now seen corresponding path program 1 times [2022-09-16 11:54:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:34,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948821898] [2022-09-16 11:54:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:34,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:34,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:34,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948821898] [2022-09-16 11:54:34,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948821898] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:34,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635950754] [2022-09-16 11:54:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:34,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:34,696 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) [2022-09-16 11:54:34,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:54:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:34,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 53 conjunts are in the unsatisfiable core [2022-09-16 11:54:34,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:35,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:54:35,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:54:35,710 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-16 11:54:35,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-09-16 11:54:35,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:54:36,012 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:54:36,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:54:36,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:54:36,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:54:36,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:54:36,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 11:54:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:36,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:54:36,568 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_189) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:54:36,627 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_188 (Array Int Int)) (v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_188) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_189) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:54:36,660 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_188 (Array Int Int)) (v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc27#1.base| v_ArrVal_188) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_189) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:54:37,751 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:54:37,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-09-16 11:54:37,765 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:54:37,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1106 treesize of output 1076 [2022-09-16 11:54:37,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1062 treesize of output 998 [2022-09-16 11:54:37,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 998 treesize of output 966 [2022-09-16 11:54:37,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 966 treesize of output 950 [2022-09-16 11:54:39,362 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:54:39,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2022-09-16 11:54:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:54:39,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635950754] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:54:39,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:54:39,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 26] total 69 [2022-09-16 11:54:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888087721] [2022-09-16 11:54:39,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:54:39,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-09-16 11:54:39,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-09-16 11:54:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=4088, Unknown=28, NotChecked=396, Total=4830 [2022-09-16 11:54:39,677 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 501 [2022-09-16 11:54:39,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 521 transitions, 1618 flow. Second operand has 70 states, 70 states have (on average 317.9) internal successors, (22253), 70 states have internal predecessors, (22253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:39,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:39,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 501 [2022-09-16 11:54:39,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:41,946 INFO L130 PetriNetUnfolder]: 93944/275153 cut-off events. [2022-09-16 11:55:41,946 INFO L131 PetriNetUnfolder]: For 75438/75661 co-relation queries the response was YES. [2022-09-16 11:55:46,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451435 conditions, 275153 events. 93944/275153 cut-off events. For 75438/75661 co-relation queries the response was YES. Maximal size of possible extension queue 4127. Compared 4074019 event pairs, 16233 based on Foata normal form. 236/223051 useless extension candidates. Maximal degree in co-relation 185408. Up to 32728 conditions per place. [2022-09-16 11:55:47,951 INFO L137 encePairwiseOnDemand]: 446/501 looper letters, 458 selfloop transitions, 120 changer transitions 0/891 dead transitions. [2022-09-16 11:55:47,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 891 transitions, 3855 flow [2022-09-16 11:55:47,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-09-16 11:55:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-09-16 11:55:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 14932 transitions. [2022-09-16 11:55:47,973 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6479215482079319 [2022-09-16 11:55:47,974 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 14932 transitions. [2022-09-16 11:55:47,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 14932 transitions. [2022-09-16 11:55:47,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:47,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 14932 transitions. [2022-09-16 11:55:47,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 324.60869565217394) internal successors, (14932), 46 states have internal predecessors, (14932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:48,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 501.0) internal successors, (23547), 47 states have internal predecessors, (23547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:48,025 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 501.0) internal successors, (23547), 47 states have internal predecessors, (23547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:48,025 INFO L175 Difference]: Start difference. First operand has 479 places, 521 transitions, 1618 flow. Second operand 46 states and 14932 transitions. [2022-09-16 11:55:48,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 891 transitions, 3855 flow [2022-09-16 11:55:49,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 891 transitions, 3799 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:49,267 INFO L231 Difference]: Finished difference. Result has 544 places, 595 transitions, 2260 flow [2022-09-16 11:55:49,268 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2260, PETRI_PLACES=544, PETRI_TRANSITIONS=595} [2022-09-16 11:55:49,269 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 99 predicate places. [2022-09-16 11:55:49,269 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 595 transitions, 2260 flow [2022-09-16 11:55:49,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 317.9) internal successors, (22253), 70 states have internal predecessors, (22253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:49,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:49,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:49,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:55:49,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:49,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:55:49,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:49,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1282927487, now seen corresponding path program 1 times [2022-09-16 11:55:49,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:49,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763417774] [2022-09-16 11:55:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:49,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:55:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:49,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763417774] [2022-09-16 11:55:49,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763417774] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:49,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:49,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:49,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117595154] [2022-09-16 11:55:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:49,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:49,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:49,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:49,548 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 501 [2022-09-16 11:55:49,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 595 transitions, 2260 flow. Second operand has 4 states, 4 states have (on average 449.75) internal successors, (1799), 4 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:49,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:49,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 501 [2022-09-16 11:55:49,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:54,178 INFO L130 PetriNetUnfolder]: 1499/18671 cut-off events. [2022-09-16 11:55:54,179 INFO L131 PetriNetUnfolder]: For 3231/3231 co-relation queries the response was YES. [2022-09-16 11:55:54,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25943 conditions, 18671 events. 1499/18671 cut-off events. For 3231/3231 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 231556 event pairs, 360 based on Foata normal form. 108/16000 useless extension candidates. Maximal degree in co-relation 23330. Up to 1469 conditions per place. [2022-09-16 11:55:54,485 INFO L137 encePairwiseOnDemand]: 494/501 looper letters, 49 selfloop transitions, 8 changer transitions 0/608 dead transitions. [2022-09-16 11:55:54,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 608 transitions, 2395 flow [2022-09-16 11:55:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:55:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:55:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1839 transitions. [2022-09-16 11:55:54,488 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9176646706586826 [2022-09-16 11:55:54,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1839 transitions. [2022-09-16 11:55:54,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1839 transitions. [2022-09-16 11:55:54,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:54,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1839 transitions. [2022-09-16 11:55:54,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 459.75) internal successors, (1839), 4 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 501.0) internal successors, (2505), 5 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,493 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 501.0) internal successors, (2505), 5 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,493 INFO L175 Difference]: Start difference. First operand has 544 places, 595 transitions, 2260 flow. Second operand 4 states and 1839 transitions. [2022-09-16 11:55:54,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 608 transitions, 2395 flow [2022-09-16 11:55:54,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 608 transitions, 2386 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:55:54,526 INFO L231 Difference]: Finished difference. Result has 545 places, 594 transitions, 2281 flow [2022-09-16 11:55:54,527 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2281, PETRI_PLACES=545, PETRI_TRANSITIONS=594} [2022-09-16 11:55:54,527 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 100 predicate places. [2022-09-16 11:55:54,527 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 594 transitions, 2281 flow [2022-09-16 11:55:54,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 449.75) internal successors, (1799), 4 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:54,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:54,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:55:54,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:55:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:54,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1973409853, now seen corresponding path program 1 times [2022-09-16 11:55:54,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:54,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177032505] [2022-09-16 11:55:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:54,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:54,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:54,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177032505] [2022-09-16 11:55:54,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177032505] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:54,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:54,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:55:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126346317] [2022-09-16 11:55:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:54,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:55:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:55:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:55:54,598 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 501 [2022-09-16 11:55:54,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 594 transitions, 2281 flow. Second operand has 5 states, 5 states have (on average 450.4) internal successors, (2252), 5 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:54,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 501 [2022-09-16 11:55:54,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:58,938 INFO L130 PetriNetUnfolder]: 935/18031 cut-off events. [2022-09-16 11:55:58,938 INFO L131 PetriNetUnfolder]: For 2445/2541 co-relation queries the response was YES. [2022-09-16 11:55:59,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23000 conditions, 18031 events. 935/18031 cut-off events. For 2445/2541 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 219639 event pairs, 48 based on Foata normal form. 6/15286 useless extension candidates. Maximal degree in co-relation 20883. Up to 895 conditions per place. [2022-09-16 11:55:59,312 INFO L137 encePairwiseOnDemand]: 493/501 looper letters, 43 selfloop transitions, 4 changer transitions 0/614 dead transitions. [2022-09-16 11:55:59,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 614 transitions, 2419 flow [2022-09-16 11:55:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2291 transitions. [2022-09-16 11:55:59,314 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9145708582834331 [2022-09-16 11:55:59,314 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2291 transitions. [2022-09-16 11:55:59,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2291 transitions. [2022-09-16 11:55:59,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:59,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2291 transitions. [2022-09-16 11:55:59,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 458.2) internal successors, (2291), 5 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:59,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:59,319 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:59,319 INFO L175 Difference]: Start difference. First operand has 545 places, 594 transitions, 2281 flow. Second operand 5 states and 2291 transitions. [2022-09-16 11:55:59,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 614 transitions, 2419 flow [2022-09-16 11:55:59,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 614 transitions, 2419 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:55:59,341 INFO L231 Difference]: Finished difference. Result has 552 places, 597 transitions, 2315 flow [2022-09-16 11:55:59,342 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2315, PETRI_PLACES=552, PETRI_TRANSITIONS=597} [2022-09-16 11:55:59,343 INFO L287 CegarLoopForPetriNet]: 445 programPoint places, 107 predicate places. [2022-09-16 11:55:59,343 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 597 transitions, 2315 flow [2022-09-16 11:55:59,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 450.4) internal successors, (2252), 5 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:59,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:59,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:59,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:55:59,344 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-09-16 11:55:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:59,344 INFO L85 PathProgramCache]: Analyzing trace with hash 432522827, now seen corresponding path program 1 times [2022-09-16 11:55:59,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:59,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135119185] [2022-09-16 11:55:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:59,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:59,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135119185] [2022-09-16 11:55:59,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135119185] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:59,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548278249] [2022-09-16 11:55:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:59,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:59,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:59,819 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) [2022-09-16 11:55:59,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:55:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:59,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 65 conjunts are in the unsatisfiable core [2022-09-16 11:55:59,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:59,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:55:59,967 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:55:59,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-16 11:56:00,369 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-16 11:56:00,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2022-09-16 11:56:00,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:56:01,606 INFO L356 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-09-16 11:56:01,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 59 [2022-09-16 11:56:01,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:56:02,224 INFO L356 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2022-09-16 11:56:02,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2022-09-16 11:56:02,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:56:02,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:56:02,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:56:02,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:56:02,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 11:56:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:02,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:02,704 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_281 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 9223372039002259456))) is different from false [2022-09-16 11:56:02,716 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_281 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:56:02,722 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_281 (Array Int Int)) (v_ArrVal_280 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_280) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:56:02,746 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_281 (Array Int Int)) (v_ArrVal_280 (Array Int Int)) (v_ArrVal_279 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_279) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_280) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:56:02,757 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_281 (Array Int Int)) (v_ArrVal_280 (Array Int Int)) (v_ArrVal_279 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc27#1.base| v_ArrVal_279) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_280) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:56:03,540 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:56:03,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-09-16 11:56:03,550 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:56:03,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2194 treesize of output 2164 [2022-09-16 11:56:03,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2150 treesize of output 2118 [2022-09-16 11:56:03,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2118 treesize of output 1990 [2022-09-16 11:56:03,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1990 treesize of output 1926 [2022-09-16 11:56:03,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 971 treesize of output 955 [2022-09-16 11:56:16,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:56:16,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:56:16,728 INFO L356 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-09-16 11:56:16,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 750 treesize of output 744 [2022-09-16 11:56:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:56:16,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548278249] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:16,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:16,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 31, 29] total 74 [2022-09-16 11:56:16,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915128758] [2022-09-16 11:56:16,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:16,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-09-16 11:56:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-09-16 11:56:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=4445, Unknown=35, NotChecked=700, Total=5550 [2022-09-16 11:56:16,948 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 501 [2022-09-16 11:56:16,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 597 transitions, 2315 flow. Second operand has 75 states, 75 states have (on average 316.6533333333333) internal successors, (23749), 75 states have internal predecessors, (23749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:16,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:16,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 501 [2022-09-16 11:56:16,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand