/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:35:15,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:35:15,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 00:35:15,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:35:15,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:35:15,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:35:15,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:35:15,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:35:15,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:35:15,908 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:35:15,908 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:35:15,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:35:15,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:35:15,909 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:35:15,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:35:15,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:35:15,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:35:15,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:35:15,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:35:15,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:35:15,910 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:35:15,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:35:15,910 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:35:15,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:35:15,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:35:15,911 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:35:15,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:35:15,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:35:15,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:35:15,912 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:35:15,912 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:35:15,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:35:15,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:35:15,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:35:15,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:35:15,913 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:35:16,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:35:16,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:35:16,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:35:16,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:35:16,161 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:35:16,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-08-27 00:35:17,173 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:35:17,345 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:35:17,345 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-08-27 00:35:17,354 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1b68573/a05a5bf55cc1462eb5c97987e763fd1a/FLAG1002b493b [2023-08-27 00:35:17,366 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1b68573/a05a5bf55cc1462eb5c97987e763fd1a [2023-08-27 00:35:17,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:35:17,370 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:35:17,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:35:17,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:35:17,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:35:17,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e52807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17, skipping insertion in model container [2023-08-27 00:35:17,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,403 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:35:17,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:35:17,555 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:35:17,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:35:17,613 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:35:17,613 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:35:17,618 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:35:17,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17 WrapperNode [2023-08-27 00:35:17,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:35:17,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:35:17,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:35:17,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:35:17,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,675 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 516 [2023-08-27 00:35:17,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:35:17,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:35:17,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:35:17,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:35:17,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:35:17,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:35:17,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:35:17,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:35:17,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (1/1) ... [2023-08-27 00:35:17,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:35:17,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:17,758 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) [2023-08-27 00:35:17,777 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 [2023-08-27 00:35:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:35:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:35:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:35:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:35:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:35:17,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:35:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:35:17,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:35:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:35:17,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:35:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 00:35:17,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 00:35:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:35:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:35:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:35:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 00:35:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:35:17,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:35:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:35:17,791 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 00:35:17,916 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:35:17,918 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:35:18,461 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:35:18,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:35:18,656 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-27 00:35:18,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:35:18 BoogieIcfgContainer [2023-08-27 00:35:18,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:35:18,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:35:18,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:35:18,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:35:18,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:35:17" (1/3) ... [2023-08-27 00:35:18,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f83b050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:35:18, skipping insertion in model container [2023-08-27 00:35:18,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:17" (2/3) ... [2023-08-27 00:35:18,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f83b050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:35:18, skipping insertion in model container [2023-08-27 00:35:18,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:35:18" (3/3) ... [2023-08-27 00:35:18,666 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-08-27 00:35:18,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:35:18,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-27 00:35:18,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:35:18,785 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 00:35:18,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 394 transitions, 820 flow [2023-08-27 00:35:18,950 INFO L124 PetriNetUnfolderBase]: 37/390 cut-off events. [2023-08-27 00:35:18,951 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:35:18,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 390 events. 37/390 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 421 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 342. Up to 8 conditions per place. [2023-08-27 00:35:18,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 394 transitions, 820 flow [2023-08-27 00:35:18,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 353 places, 377 transitions, 778 flow [2023-08-27 00:35:18,969 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:35:18,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 377 transitions, 778 flow [2023-08-27 00:35:18,980 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 377 transitions, 778 flow [2023-08-27 00:35:18,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 377 transitions, 778 flow [2023-08-27 00:35:19,051 INFO L124 PetriNetUnfolderBase]: 37/377 cut-off events. [2023-08-27 00:35:19,051 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:35:19,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 377 events. 37/377 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 419 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 342. Up to 8 conditions per place. [2023-08-27 00:35:19,065 INFO L119 LiptonReduction]: Number of co-enabled transitions 9264 [2023-08-27 00:35:31,241 INFO L134 LiptonReduction]: Checked pairs total: 11507 [2023-08-27 00:35:31,241 INFO L136 LiptonReduction]: Total number of compositions: 455 [2023-08-27 00:35:31,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:35:31,256 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;@531904, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:35:31,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-27 00:35:31,259 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:35:31,259 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 00:35:31,259 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:35:31,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:31,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:35:31,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:31,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash 65068, now seen corresponding path program 1 times [2023-08-27 00:35:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131135060] [2023-08-27 00:35:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:31,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131135060] [2023-08-27 00:35:31,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131135060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:31,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:31,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:31,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108713256] [2023-08-27 00:35:31,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:31,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:31,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 849 [2023-08-27 00:35:31,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:31,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 849 [2023-08-27 00:35:31,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:32,445 INFO L124 PetriNetUnfolderBase]: 4961/6508 cut-off events. [2023-08-27 00:35:32,445 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2023-08-27 00:35:32,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13445 conditions, 6508 events. 4961/6508 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26234 event pairs, 3757 based on Foata normal form. 0/2224 useless extension candidates. Maximal degree in co-relation 12048. Up to 6502 conditions per place. [2023-08-27 00:35:32,478 INFO L140 encePairwiseOnDemand]: 820/849 looper letters, 52 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2023-08-27 00:35:32,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 268 flow [2023-08-27 00:35:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2023-08-27 00:35:32,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38515901060070673 [2023-08-27 00:35:32,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2023-08-27 00:35:32,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2023-08-27 00:35:32,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:32,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2023-08-27 00:35:32,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,510 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 154 flow. Second operand 3 states and 981 transitions. [2023-08-27 00:35:32,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 268 flow [2023-08-27 00:35:32,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 252 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 00:35:32,521 INFO L231 Difference]: Finished difference. Result has 54 places, 61 transitions, 198 flow [2023-08-27 00:35:32,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=61} [2023-08-27 00:35:32,525 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -16 predicate places. [2023-08-27 00:35:32,526 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 61 transitions, 198 flow [2023-08-27 00:35:32,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:32,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:35:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:35:32,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:32,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:32,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2020021, now seen corresponding path program 1 times [2023-08-27 00:35:32,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:32,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700104197] [2023-08-27 00:35:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:32,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:32,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:32,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700104197] [2023-08-27 00:35:32,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700104197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:32,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:32,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:35:32,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576896174] [2023-08-27 00:35:32,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:32,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:32,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:32,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:32,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 849 [2023-08-27 00:35:32,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:32,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 849 [2023-08-27 00:35:32,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:33,455 INFO L124 PetriNetUnfolderBase]: 4961/6504 cut-off events. [2023-08-27 00:35:33,455 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 00:35:33,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13211 conditions, 6504 events. 4961/6504 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26145 event pairs, 3757 based on Foata normal form. 0/2230 useless extension candidates. Maximal degree in co-relation 13135. Up to 6486 conditions per place. [2023-08-27 00:35:33,490 INFO L140 encePairwiseOnDemand]: 843/849 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-27 00:35:33,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 296 flow [2023-08-27 00:35:33,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2023-08-27 00:35:33,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37416568511974874 [2023-08-27 00:35:33,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2023-08-27 00:35:33,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2023-08-27 00:35:33,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:33,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2023-08-27 00:35:33,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,502 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 198 flow. Second operand 3 states and 953 transitions. [2023-08-27 00:35:33,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 296 flow [2023-08-27 00:35:33,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:33,505 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 170 flow [2023-08-27 00:35:33,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2023-08-27 00:35:33,516 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -20 predicate places. [2023-08-27 00:35:33,518 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 170 flow [2023-08-27 00:35:33,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:33,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:35:33,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:35:33,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:33,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:33,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2020052, now seen corresponding path program 1 times [2023-08-27 00:35:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:33,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471123615] [2023-08-27 00:35:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:33,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471123615] [2023-08-27 00:35:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471123615] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586306705] [2023-08-27 00:35:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:33,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:33,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:33,615 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) [2023-08-27 00:35:33,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 00:35:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:33,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:33,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:33,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:33,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586306705] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:33,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:33,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:35:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143922735] [2023-08-27 00:35:33,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:33,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:35:33,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:35:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:35:33,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 849 [2023-08-27 00:35:33,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 301.14285714285717) internal successors, (2108), 7 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:33,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 849 [2023-08-27 00:35:33,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:34,729 INFO L124 PetriNetUnfolderBase]: 4973/6528 cut-off events. [2023-08-27 00:35:34,729 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 00:35:34,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13280 conditions, 6528 events. 4973/6528 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26219 event pairs, 3757 based on Foata normal form. 0/2241 useless extension candidates. Maximal degree in co-relation 13135. Up to 6501 conditions per place. [2023-08-27 00:35:34,748 INFO L140 encePairwiseOnDemand]: 836/849 looper letters, 48 selfloop transitions, 33 changer transitions 0/81 dead transitions. [2023-08-27 00:35:34,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 434 flow [2023-08-27 00:35:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:35:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:35:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1893 transitions. [2023-08-27 00:35:34,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37161366313309774 [2023-08-27 00:35:34,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1893 transitions. [2023-08-27 00:35:34,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1893 transitions. [2023-08-27 00:35:34,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:34,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1893 transitions. [2023-08-27 00:35:34,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:34,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:34,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:34,763 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 170 flow. Second operand 6 states and 1893 transitions. [2023-08-27 00:35:34,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 434 flow [2023-08-27 00:35:34,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:34,765 INFO L231 Difference]: Finished difference. Result has 56 places, 81 transitions, 396 flow [2023-08-27 00:35:34,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=56, PETRI_TRANSITIONS=81} [2023-08-27 00:35:34,766 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-08-27 00:35:34,766 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 81 transitions, 396 flow [2023-08-27 00:35:34,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 301.14285714285717) internal successors, (2108), 7 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:34,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:34,767 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 00:35:34,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 00:35:34,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:34,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:34,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:34,974 INFO L85 PathProgramCache]: Analyzing trace with hash 51796107, now seen corresponding path program 2 times [2023-08-27 00:35:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:34,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448511336] [2023-08-27 00:35:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:34,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:35,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:35,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448511336] [2023-08-27 00:35:35,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448511336] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:35,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608664599] [2023-08-27 00:35:35,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:35:35,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:35,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:35,078 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) [2023-08-27 00:35:35,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 00:35:35,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:35:35,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:35:35,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:35:35,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 00:35:35,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:35,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608664599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:35,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:35,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:35:35,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069901198] [2023-08-27 00:35:35,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:35,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:35,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:35:35,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 849 [2023-08-27 00:35:35,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 81 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:35,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:35,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 849 [2023-08-27 00:35:35,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:35,960 INFO L124 PetriNetUnfolderBase]: 4973/6524 cut-off events. [2023-08-27 00:35:35,960 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-27 00:35:35,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13327 conditions, 6524 events. 4973/6524 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26359 event pairs, 3757 based on Foata normal form. 4/2252 useless extension candidates. Maximal degree in co-relation 13228. Up to 6524 conditions per place. [2023-08-27 00:35:35,983 INFO L140 encePairwiseOnDemand]: 844/849 looper letters, 76 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-08-27 00:35:35,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 510 flow [2023-08-27 00:35:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2023-08-27 00:35:35,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773066352571653 [2023-08-27 00:35:35,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2023-08-27 00:35:35,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2023-08-27 00:35:35,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:35,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2023-08-27 00:35:35,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:35,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:35,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:35,992 INFO L175 Difference]: Start difference. First operand has 56 places, 81 transitions, 396 flow. Second operand 3 states and 961 transitions. [2023-08-27 00:35:35,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 510 flow [2023-08-27 00:35:35,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 398 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-08-27 00:35:35,998 INFO L231 Difference]: Finished difference. Result has 49 places, 77 transitions, 246 flow [2023-08-27 00:35:35,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=77} [2023-08-27 00:35:36,000 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -21 predicate places. [2023-08-27 00:35:36,001 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 77 transitions, 246 flow [2023-08-27 00:35:36,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:36,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:36,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:36,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:36,206 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,SelfDestructingSolverStorable3 [2023-08-27 00:35:36,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:36,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1003953431, now seen corresponding path program 1 times [2023-08-27 00:35:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:36,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178101830] [2023-08-27 00:35:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:36,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:36,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:36,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178101830] [2023-08-27 00:35:36,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178101830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:36,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:36,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:36,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216635798] [2023-08-27 00:35:36,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:36,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:36,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:36,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:36,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:36,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 849 [2023-08-27 00:35:36,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 77 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:36,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:36,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 849 [2023-08-27 00:35:36,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:37,479 INFO L124 PetriNetUnfolderBase]: 6723/8784 cut-off events. [2023-08-27 00:35:37,480 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 00:35:37,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 8784 events. 6723/8784 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 39806 event pairs, 1517 based on Foata normal form. 0/3130 useless extension candidates. Maximal degree in co-relation 17817. Up to 5921 conditions per place. [2023-08-27 00:35:37,512 INFO L140 encePairwiseOnDemand]: 841/849 looper letters, 104 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-08-27 00:35:37,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 107 transitions, 527 flow [2023-08-27 00:35:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2023-08-27 00:35:37,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071456615626227 [2023-08-27 00:35:37,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2023-08-27 00:35:37,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2023-08-27 00:35:37,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:37,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2023-08-27 00:35:37,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:37,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:37,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:37,522 INFO L175 Difference]: Start difference. First operand has 49 places, 77 transitions, 246 flow. Second operand 3 states and 1037 transitions. [2023-08-27 00:35:37,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 107 transitions, 527 flow [2023-08-27 00:35:37,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 107 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:37,524 INFO L231 Difference]: Finished difference. Result has 52 places, 79 transitions, 275 flow [2023-08-27 00:35:37,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=52, PETRI_TRANSITIONS=79} [2023-08-27 00:35:37,525 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -18 predicate places. [2023-08-27 00:35:37,525 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 79 transitions, 275 flow [2023-08-27 00:35:37,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:37,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:37,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:37,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 00:35:37,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:37,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1057780715, now seen corresponding path program 1 times [2023-08-27 00:35:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:37,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736708435] [2023-08-27 00:35:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:37,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:37,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736708435] [2023-08-27 00:35:37,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736708435] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:37,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898804128] [2023-08-27 00:35:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:37,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:37,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:37,707 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) [2023-08-27 00:35:37,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:35:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:37,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:37,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:37,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898804128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:37,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:37,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-27 00:35:37,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6366948] [2023-08-27 00:35:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:37,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:35:37,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 849 [2023-08-27 00:35:37,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 79 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:37,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:37,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 849 [2023-08-27 00:35:37,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:39,029 INFO L124 PetriNetUnfolderBase]: 8111/10662 cut-off events. [2023-08-27 00:35:39,030 INFO L125 PetriNetUnfolderBase]: For 2013/2013 co-relation queries the response was YES. [2023-08-27 00:35:39,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23464 conditions, 10662 events. 8111/10662 cut-off events. For 2013/2013 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 50249 event pairs, 2173 based on Foata normal form. 340/5012 useless extension candidates. Maximal degree in co-relation 23453. Up to 9043 conditions per place. [2023-08-27 00:35:39,063 INFO L140 encePairwiseOnDemand]: 843/849 looper letters, 101 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2023-08-27 00:35:39,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 543 flow [2023-08-27 00:35:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-08-27 00:35:39,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39968590498625833 [2023-08-27 00:35:39,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-08-27 00:35:39,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-08-27 00:35:39,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:39,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-08-27 00:35:39,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:39,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:39,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:39,070 INFO L175 Difference]: Start difference. First operand has 52 places, 79 transitions, 275 flow. Second operand 3 states and 1018 transitions. [2023-08-27 00:35:39,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 543 flow [2023-08-27 00:35:39,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 105 transitions, 537 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:39,075 INFO L231 Difference]: Finished difference. Result has 53 places, 82 transitions, 297 flow [2023-08-27 00:35:39,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=53, PETRI_TRANSITIONS=82} [2023-08-27 00:35:39,076 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -17 predicate places. [2023-08-27 00:35:39,076 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 82 transitions, 297 flow [2023-08-27 00:35:39,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:39,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:39,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:39,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 00:35:39,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:39,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:39,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1568392373, now seen corresponding path program 1 times [2023-08-27 00:35:39,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:39,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322625348] [2023-08-27 00:35:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:39,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:39,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:39,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322625348] [2023-08-27 00:35:39,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322625348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:39,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:39,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:39,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026976163] [2023-08-27 00:35:39,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:39,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:39,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:39,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 849 [2023-08-27 00:35:39,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 82 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:39,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:39,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 849 [2023-08-27 00:35:39,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:41,132 INFO L124 PetriNetUnfolderBase]: 11569/15016 cut-off events. [2023-08-27 00:35:41,132 INFO L125 PetriNetUnfolderBase]: For 3168/3168 co-relation queries the response was YES. [2023-08-27 00:35:41,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35995 conditions, 15016 events. 11569/15016 cut-off events. For 3168/3168 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 69327 event pairs, 4801 based on Foata normal form. 0/8676 useless extension candidates. Maximal degree in co-relation 35983. Up to 7854 conditions per place. [2023-08-27 00:35:41,181 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 112 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2023-08-27 00:35:41,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 631 flow [2023-08-27 00:35:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1059 transitions. [2023-08-27 00:35:41,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578327444051827 [2023-08-27 00:35:41,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1059 transitions. [2023-08-27 00:35:41,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1059 transitions. [2023-08-27 00:35:41,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:41,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1059 transitions. [2023-08-27 00:35:41,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:41,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:41,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:41,188 INFO L175 Difference]: Start difference. First operand has 53 places, 82 transitions, 297 flow. Second operand 3 states and 1059 transitions. [2023-08-27 00:35:41,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 631 flow [2023-08-27 00:35:41,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 116 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:41,190 INFO L231 Difference]: Finished difference. Result has 56 places, 84 transitions, 321 flow [2023-08-27 00:35:41,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=56, PETRI_TRANSITIONS=84} [2023-08-27 00:35:41,191 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-08-27 00:35:41,191 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 84 transitions, 321 flow [2023-08-27 00:35:41,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:41,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:41,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:41,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:35:41,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:41,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1568392374, now seen corresponding path program 1 times [2023-08-27 00:35:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152024148] [2023-08-27 00:35:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:41,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:41,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152024148] [2023-08-27 00:35:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152024148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:41,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:41,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:35:41,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007330178] [2023-08-27 00:35:41,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:41,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:41,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:41,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:41,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:41,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 849 [2023-08-27 00:35:41,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 84 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:41,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:41,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 849 [2023-08-27 00:35:41,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:42,982 INFO L124 PetriNetUnfolderBase]: 11191/14612 cut-off events. [2023-08-27 00:35:42,982 INFO L125 PetriNetUnfolderBase]: For 9856/9856 co-relation queries the response was YES. [2023-08-27 00:35:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38183 conditions, 14612 events. 11191/14612 cut-off events. For 9856/9856 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 69602 event pairs, 2809 based on Foata normal form. 426/10316 useless extension candidates. Maximal degree in co-relation 38168. Up to 10195 conditions per place. [2023-08-27 00:35:43,037 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 108 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-08-27 00:35:43,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 110 transitions, 615 flow [2023-08-27 00:35:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1048 transitions. [2023-08-27 00:35:43,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114644680015705 [2023-08-27 00:35:43,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1048 transitions. [2023-08-27 00:35:43,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1048 transitions. [2023-08-27 00:35:43,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:43,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1048 transitions. [2023-08-27 00:35:43,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:43,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:43,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:43,047 INFO L175 Difference]: Start difference. First operand has 56 places, 84 transitions, 321 flow. Second operand 3 states and 1048 transitions. [2023-08-27 00:35:43,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 110 transitions, 615 flow [2023-08-27 00:35:43,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 110 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:43,052 INFO L231 Difference]: Finished difference. Result has 57 places, 84 transitions, 323 flow [2023-08-27 00:35:43,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=84} [2023-08-27 00:35:43,052 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-27 00:35:43,053 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 84 transitions, 323 flow [2023-08-27 00:35:43,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:43,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:43,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:43,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 00:35:43,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:43,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:43,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1375525184, now seen corresponding path program 1 times [2023-08-27 00:35:43,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:43,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38497851] [2023-08-27 00:35:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:43,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:43,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38497851] [2023-08-27 00:35:43,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38497851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:43,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:43,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:35:43,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564863703] [2023-08-27 00:35:43,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:43,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:35:43,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:43,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:35:43,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:35:43,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 849 [2023-08-27 00:35:43,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 84 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:43,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:43,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 849 [2023-08-27 00:35:43,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:44,914 INFO L124 PetriNetUnfolderBase]: 10007/13200 cut-off events. [2023-08-27 00:35:44,914 INFO L125 PetriNetUnfolderBase]: For 4958/4958 co-relation queries the response was YES. [2023-08-27 00:35:44,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33769 conditions, 13200 events. 10007/13200 cut-off events. For 4958/4958 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 62460 event pairs, 1571 based on Foata normal form. 268/8896 useless extension candidates. Maximal degree in co-relation 33753. Up to 6611 conditions per place. [2023-08-27 00:35:44,959 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 129 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2023-08-27 00:35:44,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 132 transitions, 711 flow [2023-08-27 00:35:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:44,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1375 transitions. [2023-08-27 00:35:44,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048881036513545 [2023-08-27 00:35:44,963 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1375 transitions. [2023-08-27 00:35:44,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1375 transitions. [2023-08-27 00:35:44,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:44,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1375 transitions. [2023-08-27 00:35:44,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 343.75) internal successors, (1375), 4 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:44,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:44,969 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:44,969 INFO L175 Difference]: Start difference. First operand has 57 places, 84 transitions, 323 flow. Second operand 4 states and 1375 transitions. [2023-08-27 00:35:44,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 132 transitions, 711 flow [2023-08-27 00:35:44,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 132 transitions, 707 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:44,976 INFO L231 Difference]: Finished difference. Result has 59 places, 83 transitions, 319 flow [2023-08-27 00:35:44,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=83} [2023-08-27 00:35:44,976 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-08-27 00:35:44,977 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 83 transitions, 319 flow [2023-08-27 00:35:44,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:44,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:44,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:44,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 00:35:44,977 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:44,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash -308457241, now seen corresponding path program 1 times [2023-08-27 00:35:44,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:44,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138188034] [2023-08-27 00:35:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:44,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:45,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:45,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138188034] [2023-08-27 00:35:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138188034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:45,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:45,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:35:45,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468343285] [2023-08-27 00:35:45,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:45,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:45,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:45,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:45,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:45,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 849 [2023-08-27 00:35:45,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 83 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:45,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:45,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 849 [2023-08-27 00:35:45,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:46,426 INFO L124 PetriNetUnfolderBase]: 9625/12670 cut-off events. [2023-08-27 00:35:46,426 INFO L125 PetriNetUnfolderBase]: For 5720/5720 co-relation queries the response was YES. [2023-08-27 00:35:46,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32548 conditions, 12670 events. 9625/12670 cut-off events. For 5720/5720 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 59513 event pairs, 3101 based on Foata normal form. 0/7958 useless extension candidates. Maximal degree in co-relation 32531. Up to 11041 conditions per place. [2023-08-27 00:35:46,485 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 101 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-27 00:35:46,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 574 flow [2023-08-27 00:35:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-08-27 00:35:46,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095013741656851 [2023-08-27 00:35:46,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-08-27 00:35:46,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-08-27 00:35:46,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:46,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-08-27 00:35:46,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:46,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:46,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:46,493 INFO L175 Difference]: Start difference. First operand has 59 places, 83 transitions, 319 flow. Second operand 3 states and 1043 transitions. [2023-08-27 00:35:46,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 574 flow [2023-08-27 00:35:46,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:46,496 INFO L231 Difference]: Finished difference. Result has 60 places, 83 transitions, 323 flow [2023-08-27 00:35:46,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=60, PETRI_TRANSITIONS=83} [2023-08-27 00:35:46,497 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-08-27 00:35:46,497 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 83 transitions, 323 flow [2023-08-27 00:35:46,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:46,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:46,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:46,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 00:35:46,498 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:46,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash -308457255, now seen corresponding path program 1 times [2023-08-27 00:35:46,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:46,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303966489] [2023-08-27 00:35:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:46,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:46,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303966489] [2023-08-27 00:35:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303966489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:46,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069387991] [2023-08-27 00:35:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:46,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:46,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:46,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:46,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 849 [2023-08-27 00:35:46,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 83 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:46,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:46,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 849 [2023-08-27 00:35:46,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:48,528 INFO L124 PetriNetUnfolderBase]: 13953/18148 cut-off events. [2023-08-27 00:35:48,528 INFO L125 PetriNetUnfolderBase]: For 9069/9069 co-relation queries the response was YES. [2023-08-27 00:35:48,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47493 conditions, 18148 events. 13953/18148 cut-off events. For 9069/9069 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 88406 event pairs, 6375 based on Foata normal form. 0/12740 useless extension candidates. Maximal degree in co-relation 47475. Up to 9861 conditions per place. [2023-08-27 00:35:48,589 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 113 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-27 00:35:48,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 681 flow [2023-08-27 00:35:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2023-08-27 00:35:48,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149980369061641 [2023-08-27 00:35:48,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2023-08-27 00:35:48,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2023-08-27 00:35:48,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:48,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2023-08-27 00:35:48,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:48,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:48,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:48,624 INFO L175 Difference]: Start difference. First operand has 60 places, 83 transitions, 323 flow. Second operand 3 states and 1057 transitions. [2023-08-27 00:35:48,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 117 transitions, 681 flow [2023-08-27 00:35:48,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 117 transitions, 675 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:48,627 INFO L231 Difference]: Finished difference. Result has 62 places, 85 transitions, 349 flow [2023-08-27 00:35:48,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=62, PETRI_TRANSITIONS=85} [2023-08-27 00:35:48,628 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2023-08-27 00:35:48,628 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 85 transitions, 349 flow [2023-08-27 00:35:48,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:48,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:48,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:48,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:35:48,629 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:48,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:48,629 INFO L85 PathProgramCache]: Analyzing trace with hash -972237134, now seen corresponding path program 1 times [2023-08-27 00:35:48,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:48,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582199071] [2023-08-27 00:35:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:48,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:48,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:48,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582199071] [2023-08-27 00:35:48,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582199071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:48,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:48,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:35:48,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469160907] [2023-08-27 00:35:48,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:48,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:48,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:35:48,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 849 [2023-08-27 00:35:48,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 85 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:48,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:48,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 849 [2023-08-27 00:35:48,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:50,706 INFO L124 PetriNetUnfolderBase]: 11775/15260 cut-off events. [2023-08-27 00:35:50,706 INFO L125 PetriNetUnfolderBase]: For 11182/11182 co-relation queries the response was YES. [2023-08-27 00:35:50,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43201 conditions, 15260 events. 11775/15260 cut-off events. For 11182/11182 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 69996 event pairs, 1989 based on Foata normal form. 136/11216 useless extension candidates. Maximal degree in co-relation 43181. Up to 7421 conditions per place. [2023-08-27 00:35:50,755 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 124 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2023-08-27 00:35:50,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 128 transitions, 728 flow [2023-08-27 00:35:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1384 transitions. [2023-08-27 00:35:50,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075382803297998 [2023-08-27 00:35:50,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1384 transitions. [2023-08-27 00:35:50,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1384 transitions. [2023-08-27 00:35:50,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:50,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1384 transitions. [2023-08-27 00:35:50,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:50,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:50,764 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:50,764 INFO L175 Difference]: Start difference. First operand has 62 places, 85 transitions, 349 flow. Second operand 4 states and 1384 transitions. [2023-08-27 00:35:50,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 128 transitions, 728 flow [2023-08-27 00:35:50,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 128 transitions, 720 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:50,792 INFO L231 Difference]: Finished difference. Result has 63 places, 84 transitions, 341 flow [2023-08-27 00:35:50,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=63, PETRI_TRANSITIONS=84} [2023-08-27 00:35:50,794 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-27 00:35:50,794 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 84 transitions, 341 flow [2023-08-27 00:35:50,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:50,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:50,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:50,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 00:35:50,796 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:50,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash -74613258, now seen corresponding path program 1 times [2023-08-27 00:35:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:50,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235904104] [2023-08-27 00:35:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:50,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235904104] [2023-08-27 00:35:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235904104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:50,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:50,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:35:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128437120] [2023-08-27 00:35:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:50,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:35:50,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 849 [2023-08-27 00:35:50,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 84 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:50,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:50,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 849 [2023-08-27 00:35:50,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:53,340 INFO L124 PetriNetUnfolderBase]: 16246/21131 cut-off events. [2023-08-27 00:35:53,340 INFO L125 PetriNetUnfolderBase]: For 16795/16795 co-relation queries the response was YES. [2023-08-27 00:35:53,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59124 conditions, 21131 events. 16246/21131 cut-off events. For 16795/16795 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 102163 event pairs, 12344 based on Foata normal form. 252/16200 useless extension candidates. Maximal degree in co-relation 59104. Up to 15259 conditions per place. [2023-08-27 00:35:53,408 INFO L140 encePairwiseOnDemand]: 840/849 looper letters, 147 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2023-08-27 00:35:53,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 150 transitions, 896 flow [2023-08-27 00:35:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1213 transitions. [2023-08-27 00:35:53,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3571849234393404 [2023-08-27 00:35:53,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1213 transitions. [2023-08-27 00:35:53,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1213 transitions. [2023-08-27 00:35:53,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:53,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1213 transitions. [2023-08-27 00:35:53,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:53,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:53,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:53,416 INFO L175 Difference]: Start difference. First operand has 63 places, 84 transitions, 341 flow. Second operand 4 states and 1213 transitions. [2023-08-27 00:35:53,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 150 transitions, 896 flow [2023-08-27 00:35:53,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 150 transitions, 888 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:53,422 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 357 flow [2023-08-27 00:35:53,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-08-27 00:35:53,423 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2023-08-27 00:35:53,423 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 357 flow [2023-08-27 00:35:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:53,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:53,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:53,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 00:35:53,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:53,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -74613254, now seen corresponding path program 1 times [2023-08-27 00:35:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865296251] [2023-08-27 00:35:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:53,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:53,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865296251] [2023-08-27 00:35:53,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865296251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:53,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:53,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289960623] [2023-08-27 00:35:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:53,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:53,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:53,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:53,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 849 [2023-08-27 00:35:53,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:53,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:53,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 849 [2023-08-27 00:35:53,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:55,786 INFO L124 PetriNetUnfolderBase]: 16134/20959 cut-off events. [2023-08-27 00:35:55,786 INFO L125 PetriNetUnfolderBase]: For 19808/19808 co-relation queries the response was YES. [2023-08-27 00:35:55,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60883 conditions, 20959 events. 16134/20959 cut-off events. For 19808/19808 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 100976 event pairs, 7570 based on Foata normal form. 0/17461 useless extension candidates. Maximal degree in co-relation 60862. Up to 16689 conditions per place. [2023-08-27 00:35:55,882 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 114 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-08-27 00:35:55,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 117 transitions, 737 flow [2023-08-27 00:35:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1055 transitions. [2023-08-27 00:35:55,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41421279937181 [2023-08-27 00:35:55,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1055 transitions. [2023-08-27 00:35:55,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1055 transitions. [2023-08-27 00:35:55,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:55,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1055 transitions. [2023-08-27 00:35:55,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:55,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:55,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:55,888 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 357 flow. Second operand 3 states and 1055 transitions. [2023-08-27 00:35:55,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 117 transitions, 737 flow [2023-08-27 00:35:55,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 117 transitions, 731 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:55,895 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 371 flow [2023-08-27 00:35:55,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2023-08-27 00:35:55,896 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2023-08-27 00:35:55,896 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 371 flow [2023-08-27 00:35:55,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:55,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:55,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:55,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 00:35:55,896 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:55,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:55,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1981958249, now seen corresponding path program 1 times [2023-08-27 00:35:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:55,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843619085] [2023-08-27 00:35:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:56,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843619085] [2023-08-27 00:35:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843619085] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688070912] [2023-08-27 00:35:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:56,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:56,024 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) [2023-08-27 00:35:56,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:35:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:56,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:35:56,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:56,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688070912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:56,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:56,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 00:35:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032004373] [2023-08-27 00:35:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:56,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:56,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:56,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:56,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:56,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 849 [2023-08-27 00:35:56,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:56,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:56,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 849 [2023-08-27 00:35:56,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:58,212 INFO L124 PetriNetUnfolderBase]: 11850/15411 cut-off events. [2023-08-27 00:35:58,212 INFO L125 PetriNetUnfolderBase]: For 20409/20409 co-relation queries the response was YES. [2023-08-27 00:35:58,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47959 conditions, 15411 events. 11850/15411 cut-off events. For 20409/20409 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 70688 event pairs, 9182 based on Foata normal form. 30/13727 useless extension candidates. Maximal degree in co-relation 47935. Up to 15173 conditions per place. [2023-08-27 00:35:58,267 INFO L140 encePairwiseOnDemand]: 839/849 looper letters, 120 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2023-08-27 00:35:58,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 135 transitions, 809 flow [2023-08-27 00:35:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:35:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:35:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1460 transitions. [2023-08-27 00:35:58,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34393404004711425 [2023-08-27 00:35:58,270 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1460 transitions. [2023-08-27 00:35:58,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1460 transitions. [2023-08-27 00:35:58,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:58,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1460 transitions. [2023-08-27 00:35:58,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:58,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:58,275 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:58,275 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 371 flow. Second operand 5 states and 1460 transitions. [2023-08-27 00:35:58,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 135 transitions, 809 flow [2023-08-27 00:35:58,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 135 transitions, 803 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:58,281 INFO L231 Difference]: Finished difference. Result has 72 places, 97 transitions, 494 flow [2023-08-27 00:35:58,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=72, PETRI_TRANSITIONS=97} [2023-08-27 00:35:58,282 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-08-27 00:35:58,282 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 97 transitions, 494 flow [2023-08-27 00:35:58,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:58,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:58,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:58,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 00:35:58,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 00:35:58,486 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:58,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash -229332531, now seen corresponding path program 1 times [2023-08-27 00:35:58,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:58,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334285149] [2023-08-27 00:35:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:58,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:58,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:58,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334285149] [2023-08-27 00:35:58,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334285149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:58,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5801639] [2023-08-27 00:35:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:58,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:58,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:58,601 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) [2023-08-27 00:35:58,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:35:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:58,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:58,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:58,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:58,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5801639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:58,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:58,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 00:35:58,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543040916] [2023-08-27 00:35:58,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:58,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:58,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:58,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:58,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:58,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 00:35:58,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 97 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:58,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:58,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 00:35:58,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:59,468 INFO L124 PetriNetUnfolderBase]: 4552/6033 cut-off events. [2023-08-27 00:35:59,469 INFO L125 PetriNetUnfolderBase]: For 8606/8606 co-relation queries the response was YES. [2023-08-27 00:35:59,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17101 conditions, 6033 events. 4552/6033 cut-off events. For 8606/8606 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 24351 event pairs, 3284 based on Foata normal form. 1060/6539 useless extension candidates. Maximal degree in co-relation 17075. Up to 6033 conditions per place. [2023-08-27 00:35:59,495 INFO L140 encePairwiseOnDemand]: 842/849 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-27 00:35:59,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 622 flow [2023-08-27 00:35:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1032 transitions. [2023-08-27 00:35:59,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40518256772673733 [2023-08-27 00:35:59,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1032 transitions. [2023-08-27 00:35:59,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1032 transitions. [2023-08-27 00:35:59,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:59,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1032 transitions. [2023-08-27 00:35:59,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:59,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:59,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:59,502 INFO L175 Difference]: Start difference. First operand has 72 places, 97 transitions, 494 flow. Second operand 3 states and 1032 transitions. [2023-08-27 00:35:59,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 622 flow [2023-08-27 00:35:59,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 00:35:59,506 INFO L231 Difference]: Finished difference. Result has 63 places, 89 transitions, 436 flow [2023-08-27 00:35:59,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=63, PETRI_TRANSITIONS=89} [2023-08-27 00:35:59,506 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-27 00:35:59,506 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 89 transitions, 436 flow [2023-08-27 00:35:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:59,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:59,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:59,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 00:35:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 00:35:59,711 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:59,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1480628082, now seen corresponding path program 1 times [2023-08-27 00:35:59,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:59,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852326364] [2023-08-27 00:35:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:59,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852326364] [2023-08-27 00:35:59,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852326364] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801783510] [2023-08-27 00:35:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:59,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:59,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:59,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:59,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:35:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:59,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:35:59,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:59,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:35:59,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:59,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801783510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:59,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:59,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2023-08-27 00:35:59,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325230229] [2023-08-27 00:35:59,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:59,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:59,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:59,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:59,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:35:59,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 849 [2023-08-27 00:35:59,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 89 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:59,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:59,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 849 [2023-08-27 00:35:59,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:00,506 INFO L124 PetriNetUnfolderBase]: 3134/4197 cut-off events. [2023-08-27 00:36:00,507 INFO L125 PetriNetUnfolderBase]: For 3638/3638 co-relation queries the response was YES. [2023-08-27 00:36:00,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11691 conditions, 4197 events. 3134/4197 cut-off events. For 3638/3638 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 16173 event pairs, 2138 based on Foata normal form. 418/4241 useless extension candidates. Maximal degree in co-relation 11668. Up to 4197 conditions per place. [2023-08-27 00:36:00,521 INFO L140 encePairwiseOnDemand]: 847/849 looper letters, 87 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-08-27 00:36:00,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 608 flow [2023-08-27 00:36:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1029 transitions. [2023-08-27 00:36:00,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040047114252061 [2023-08-27 00:36:00,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1029 transitions. [2023-08-27 00:36:00,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1029 transitions. [2023-08-27 00:36:00,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:00,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1029 transitions. [2023-08-27 00:36:00,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:00,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:00,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:00,528 INFO L175 Difference]: Start difference. First operand has 63 places, 89 transitions, 436 flow. Second operand 3 states and 1029 transitions. [2023-08-27 00:36:00,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 608 flow [2023-08-27 00:36:00,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:36:00,531 INFO L231 Difference]: Finished difference. Result has 62 places, 88 transitions, 431 flow [2023-08-27 00:36:00,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=62, PETRI_TRANSITIONS=88} [2023-08-27 00:36:00,532 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2023-08-27 00:36:00,532 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 88 transitions, 431 flow [2023-08-27 00:36:00,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:00,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:00,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:00,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 00:36:00,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 00:36:00,737 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:00,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:00,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1345164519, now seen corresponding path program 1 times [2023-08-27 00:36:00,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:00,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488158037] [2023-08-27 00:36:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488158037] [2023-08-27 00:36:00,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488158037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:00,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:00,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:36:00,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219885504] [2023-08-27 00:36:00,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:00,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:36:00,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:36:00,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:36:00,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 849 [2023-08-27 00:36:00,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 88 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:00,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:00,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 849 [2023-08-27 00:36:00,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:01,770 INFO L124 PetriNetUnfolderBase]: 5078/6859 cut-off events. [2023-08-27 00:36:01,770 INFO L125 PetriNetUnfolderBase]: For 5390/5390 co-relation queries the response was YES. [2023-08-27 00:36:01,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18799 conditions, 6859 events. 5078/6859 cut-off events. For 5390/5390 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 28818 event pairs, 3460 based on Foata normal form. 200/6515 useless extension candidates. Maximal degree in co-relation 18776. Up to 4165 conditions per place. [2023-08-27 00:36:01,794 INFO L140 encePairwiseOnDemand]: 838/849 looper letters, 108 selfloop transitions, 24 changer transitions 0/132 dead transitions. [2023-08-27 00:36:01,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 132 transitions, 872 flow [2023-08-27 00:36:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:36:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:36:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1482 transitions. [2023-08-27 00:36:01,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491166077738516 [2023-08-27 00:36:01,797 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1482 transitions. [2023-08-27 00:36:01,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1482 transitions. [2023-08-27 00:36:01,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:01,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1482 transitions. [2023-08-27 00:36:01,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.4) internal successors, (1482), 5 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:01,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:01,802 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:01,802 INFO L175 Difference]: Start difference. First operand has 62 places, 88 transitions, 431 flow. Second operand 5 states and 1482 transitions. [2023-08-27 00:36:01,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 132 transitions, 872 flow [2023-08-27 00:36:01,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 132 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:01,806 INFO L231 Difference]: Finished difference. Result has 67 places, 92 transitions, 553 flow [2023-08-27 00:36:01,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=553, PETRI_PLACES=67, PETRI_TRANSITIONS=92} [2023-08-27 00:36:01,807 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2023-08-27 00:36:01,807 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 92 transitions, 553 flow [2023-08-27 00:36:01,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:01,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:01,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:01,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 00:36:01,821 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:01,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1345164453, now seen corresponding path program 1 times [2023-08-27 00:36:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349999375] [2023-08-27 00:36:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:01,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:01,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349999375] [2023-08-27 00:36:01,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349999375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:01,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003036856] [2023-08-27 00:36:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:01,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:01,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:01,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:01,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:36:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:02,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:36:02,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:02,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:36:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003036856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:02,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:36:02,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-27 00:36:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595350928] [2023-08-27 00:36:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:02,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:36:02,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:36:02,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:36:02,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 849 [2023-08-27 00:36:02,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 92 transitions, 553 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:02,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:02,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 849 [2023-08-27 00:36:02,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:03,787 INFO L124 PetriNetUnfolderBase]: 9400/12747 cut-off events. [2023-08-27 00:36:03,788 INFO L125 PetriNetUnfolderBase]: For 10775/10775 co-relation queries the response was YES. [2023-08-27 00:36:03,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35499 conditions, 12747 events. 9400/12747 cut-off events. For 10775/10775 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 59166 event pairs, 6400 based on Foata normal form. 0/12107 useless extension candidates. Maximal degree in co-relation 35473. Up to 6847 conditions per place. [2023-08-27 00:36:03,859 INFO L140 encePairwiseOnDemand]: 839/849 looper letters, 129 selfloop transitions, 28 changer transitions 0/157 dead transitions. [2023-08-27 00:36:03,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 157 transitions, 1209 flow [2023-08-27 00:36:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:36:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:36:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1484 transitions. [2023-08-27 00:36:03,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3495877502944641 [2023-08-27 00:36:03,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1484 transitions. [2023-08-27 00:36:03,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1484 transitions. [2023-08-27 00:36:03,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:03,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1484 transitions. [2023-08-27 00:36:03,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.8) internal successors, (1484), 5 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:03,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:03,867 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:03,867 INFO L175 Difference]: Start difference. First operand has 67 places, 92 transitions, 553 flow. Second operand 5 states and 1484 transitions. [2023-08-27 00:36:03,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 157 transitions, 1209 flow [2023-08-27 00:36:03,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 157 transitions, 1190 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:03,897 INFO L231 Difference]: Finished difference. Result has 72 places, 110 transitions, 829 flow [2023-08-27 00:36:03,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=829, PETRI_PLACES=72, PETRI_TRANSITIONS=110} [2023-08-27 00:36:03,898 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-08-27 00:36:03,898 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 110 transitions, 829 flow [2023-08-27 00:36:03,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:03,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:03,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:03,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:04,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:04,100 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:04,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1345164521, now seen corresponding path program 1 times [2023-08-27 00:36:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:04,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152559744] [2023-08-27 00:36:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:04,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152559744] [2023-08-27 00:36:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152559744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753040037] [2023-08-27 00:36:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:04,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:04,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:04,246 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:04,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:36:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:04,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:36:04,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:04,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:36:04,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753040037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:04,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:36:04,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-27 00:36:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990348405] [2023-08-27 00:36:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:04,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:36:04,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:36:04,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:36:04,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 849 [2023-08-27 00:36:04,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 110 transitions, 829 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:04,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:04,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 849 [2023-08-27 00:36:04,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:07,315 INFO L124 PetriNetUnfolderBase]: 15712/21571 cut-off events. [2023-08-27 00:36:07,315 INFO L125 PetriNetUnfolderBase]: For 20032/20032 co-relation queries the response was YES. [2023-08-27 00:36:07,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59230 conditions, 21571 events. 15712/21571 cut-off events. For 20032/20032 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 111185 event pairs, 10912 based on Foata normal form. 720/21851 useless extension candidates. Maximal degree in co-relation 59201. Up to 12669 conditions per place. [2023-08-27 00:36:07,399 INFO L140 encePairwiseOnDemand]: 838/849 looper letters, 89 selfloop transitions, 53 changer transitions 0/142 dead transitions. [2023-08-27 00:36:07,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1237 flow [2023-08-27 00:36:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:36:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:36:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1480 transitions. [2023-08-27 00:36:07,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486454652532391 [2023-08-27 00:36:07,402 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1480 transitions. [2023-08-27 00:36:07,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1480 transitions. [2023-08-27 00:36:07,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:07,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1480 transitions. [2023-08-27 00:36:07,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:07,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:07,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:07,406 INFO L175 Difference]: Start difference. First operand has 72 places, 110 transitions, 829 flow. Second operand 5 states and 1480 transitions. [2023-08-27 00:36:07,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1237 flow [2023-08-27 00:36:07,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 142 transitions, 1230 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:07,416 INFO L231 Difference]: Finished difference. Result has 76 places, 110 transitions, 977 flow [2023-08-27 00:36:07,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=977, PETRI_PLACES=76, PETRI_TRANSITIONS=110} [2023-08-27 00:36:07,417 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-27 00:36:07,417 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 110 transitions, 977 flow [2023-08-27 00:36:07,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:07,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:07,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:07,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:07,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:07,622 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:07,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2099101663, now seen corresponding path program 1 times [2023-08-27 00:36:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:07,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825275210] [2023-08-27 00:36:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:07,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:07,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825275210] [2023-08-27 00:36:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825275210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924807907] [2023-08-27 00:36:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:07,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:07,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:07,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:36:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:07,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:36:07,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:07,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:36:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924807907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:07,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:36:07,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 00:36:07,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465428128] [2023-08-27 00:36:07,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:07,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:07,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:36:07,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 00:36:07,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 110 transitions, 977 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:07,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:07,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 00:36:07,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:10,302 INFO L124 PetriNetUnfolderBase]: 12700/17799 cut-off events. [2023-08-27 00:36:10,302 INFO L125 PetriNetUnfolderBase]: For 18546/18546 co-relation queries the response was YES. [2023-08-27 00:36:10,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47695 conditions, 17799 events. 12700/17799 cut-off events. For 18546/18546 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 93181 event pairs, 9024 based on Foata normal form. 1040/18807 useless extension candidates. Maximal degree in co-relation 47664. Up to 17799 conditions per place. [2023-08-27 00:36:10,407 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 106 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-08-27 00:36:10,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 1170 flow [2023-08-27 00:36:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2023-08-27 00:36:10,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40243423635649783 [2023-08-27 00:36:10,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1025 transitions. [2023-08-27 00:36:10,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1025 transitions. [2023-08-27 00:36:10,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:10,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1025 transitions. [2023-08-27 00:36:10,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:10,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:10,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:10,417 INFO L175 Difference]: Start difference. First operand has 76 places, 110 transitions, 977 flow. Second operand 3 states and 1025 transitions. [2023-08-27 00:36:10,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 1170 flow [2023-08-27 00:36:10,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 107 transitions, 1025 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 00:36:10,441 INFO L231 Difference]: Finished difference. Result has 70 places, 107 transitions, 813 flow [2023-08-27 00:36:10,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=813, PETRI_PLACES=70, PETRI_TRANSITIONS=107} [2023-08-27 00:36:10,441 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 0 predicate places. [2023-08-27 00:36:10,441 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 107 transitions, 813 flow [2023-08-27 00:36:10,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:10,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:10,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:10,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:10,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:10,646 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:10,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1126140800, now seen corresponding path program 1 times [2023-08-27 00:36:10,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:10,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799676025] [2023-08-27 00:36:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:10,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:10,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799676025] [2023-08-27 00:36:10,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799676025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:10,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553804662] [2023-08-27 00:36:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:10,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:10,769 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:10,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:36:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:10,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:36:10,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:10,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:36:10,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553804662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:10,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:36:10,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 00:36:10,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267973850] [2023-08-27 00:36:10,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:10,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:10,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:36:10,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 00:36:10,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 107 transitions, 813 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:10,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:10,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 00:36:10,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:12,894 INFO L124 PetriNetUnfolderBase]: 9852/14119 cut-off events. [2023-08-27 00:36:12,894 INFO L125 PetriNetUnfolderBase]: For 10067/10067 co-relation queries the response was YES. [2023-08-27 00:36:12,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36151 conditions, 14119 events. 9852/14119 cut-off events. For 10067/10067 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 74261 event pairs, 6992 based on Foata normal form. 704/14791 useless extension candidates. Maximal degree in co-relation 36124. Up to 14119 conditions per place. [2023-08-27 00:36:12,946 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 103 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2023-08-27 00:36:12,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 1001 flow [2023-08-27 00:36:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-08-27 00:36:12,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4016489988221437 [2023-08-27 00:36:12,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-08-27 00:36:12,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-08-27 00:36:12,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:12,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-08-27 00:36:12,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:12,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:12,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:12,951 INFO L175 Difference]: Start difference. First operand has 70 places, 107 transitions, 813 flow. Second operand 3 states and 1023 transitions. [2023-08-27 00:36:12,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 1001 flow [2023-08-27 00:36:12,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 104 transitions, 973 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:36:12,964 INFO L231 Difference]: Finished difference. Result has 66 places, 104 transitions, 767 flow [2023-08-27 00:36:12,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=767, PETRI_PLACES=66, PETRI_TRANSITIONS=104} [2023-08-27 00:36:12,965 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-27 00:36:12,965 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 104 transitions, 767 flow [2023-08-27 00:36:12,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:12,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:12,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:12,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:13,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 00:36:13,170 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:13,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash -525648621, now seen corresponding path program 1 times [2023-08-27 00:36:13,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:13,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174553357] [2023-08-27 00:36:13,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:13,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174553357] [2023-08-27 00:36:13,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174553357] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108243572] [2023-08-27 00:36:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:13,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:13,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:13,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:36:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:13,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:36:13,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:13,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:36:13,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108243572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:13,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:36:13,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 00:36:13,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516305243] [2023-08-27 00:36:13,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:13,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:36:13,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 00:36:13,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 104 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:13,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:13,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 00:36:13,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:15,132 INFO L124 PetriNetUnfolderBase]: 8956/12967 cut-off events. [2023-08-27 00:36:15,132 INFO L125 PetriNetUnfolderBase]: For 5384/5384 co-relation queries the response was YES. [2023-08-27 00:36:15,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32553 conditions, 12967 events. 8956/12967 cut-off events. For 5384/5384 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 68421 event pairs, 6352 based on Foata normal form. 256/13191 useless extension candidates. Maximal degree in co-relation 32528. Up to 12967 conditions per place. [2023-08-27 00:36:15,181 INFO L140 encePairwiseOnDemand]: 847/849 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-08-27 00:36:15,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 967 flow [2023-08-27 00:36:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1021 transitions. [2023-08-27 00:36:15,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40086376128778956 [2023-08-27 00:36:15,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1021 transitions. [2023-08-27 00:36:15,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1021 transitions. [2023-08-27 00:36:15,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:15,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1021 transitions. [2023-08-27 00:36:15,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:15,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:15,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:15,187 INFO L175 Difference]: Start difference. First operand has 66 places, 104 transitions, 767 flow. Second operand 3 states and 1021 transitions. [2023-08-27 00:36:15,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 967 flow [2023-08-27 00:36:15,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 966 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:15,190 INFO L231 Difference]: Finished difference. Result has 66 places, 103 transitions, 762 flow [2023-08-27 00:36:15,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=762, PETRI_PLACES=66, PETRI_TRANSITIONS=103} [2023-08-27 00:36:15,197 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-27 00:36:15,197 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 103 transitions, 762 flow [2023-08-27 00:36:15,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:15,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:15,197 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] [2023-08-27 00:36:15,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 00:36:15,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 00:36:15,402 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:15,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:15,402 INFO L85 PathProgramCache]: Analyzing trace with hash -338672043, now seen corresponding path program 1 times [2023-08-27 00:36:15,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:15,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146858422] [2023-08-27 00:36:15,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:15,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:15,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:15,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146858422] [2023-08-27 00:36:15,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146858422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:15,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:15,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:36:15,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283974671] [2023-08-27 00:36:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:15,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:15,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:36:15,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 00:36:15,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 103 transitions, 762 flow. Second operand has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:15,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:15,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 00:36:15,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:17,190 INFO L124 PetriNetUnfolderBase]: 8956/12951 cut-off events. [2023-08-27 00:36:17,190 INFO L125 PetriNetUnfolderBase]: For 5544/5544 co-relation queries the response was YES. [2023-08-27 00:36:17,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32522 conditions, 12951 events. 8956/12951 cut-off events. For 5544/5544 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 67784 event pairs, 4112 based on Foata normal form. 16/12935 useless extension candidates. Maximal degree in co-relation 32496. Up to 9505 conditions per place. [2023-08-27 00:36:17,231 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 87 selfloop transitions, 2 changer transitions 26/115 dead transitions. [2023-08-27 00:36:17,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 115 transitions, 1020 flow [2023-08-27 00:36:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:17,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-27 00:36:17,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059678052610915 [2023-08-27 00:36:17,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-27 00:36:17,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-27 00:36:17,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:17,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-27 00:36:17,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:17,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:17,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:17,237 INFO L175 Difference]: Start difference. First operand has 66 places, 103 transitions, 762 flow. Second operand 3 states and 1034 transitions. [2023-08-27 00:36:17,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 115 transitions, 1020 flow [2023-08-27 00:36:17,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 1019 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:17,240 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 490 flow [2023-08-27 00:36:17,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2023-08-27 00:36:17,241 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2023-08-27 00:36:17,241 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 490 flow [2023-08-27 00:36:17,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:17,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:17,241 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] [2023-08-27 00:36:17,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 00:36:17,241 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:17,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:17,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1028676549, now seen corresponding path program 1 times [2023-08-27 00:36:17,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:17,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309657652] [2023-08-27 00:36:17,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:17,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:17,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:17,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309657652] [2023-08-27 00:36:17,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309657652] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:17,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164676624] [2023-08-27 00:36:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:17,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:17,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:17,398 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:17,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 00:36:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:17,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:36:17,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:17,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:17,853 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:17,854 INFO L351 Elim1Store]: Elim1 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 216 treesize of output 204 [2023-08-27 00:36:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164676624] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:18,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:18,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:36:18,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945540794] [2023-08-27 00:36:18,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:18,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:36:18,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:36:18,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:36:18,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 849 [2023-08-27 00:36:18,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 490 flow. Second operand has 7 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:18,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:18,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 849 [2023-08-27 00:36:18,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:19,853 INFO L124 PetriNetUnfolderBase]: 9016/12744 cut-off events. [2023-08-27 00:36:19,854 INFO L125 PetriNetUnfolderBase]: For 6445/6445 co-relation queries the response was YES. [2023-08-27 00:36:19,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33097 conditions, 12744 events. 9016/12744 cut-off events. For 6445/6445 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 65111 event pairs, 2216 based on Foata normal form. 8/12736 useless extension candidates. Maximal degree in co-relation 33069. Up to 9633 conditions per place. [2023-08-27 00:36:19,902 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 98 selfloop transitions, 4 changer transitions 3/105 dead transitions. [2023-08-27 00:36:19,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 768 flow [2023-08-27 00:36:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:36:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:36:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1357 transitions. [2023-08-27 00:36:19,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995877502944641 [2023-08-27 00:36:19,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1357 transitions. [2023-08-27 00:36:19,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1357 transitions. [2023-08-27 00:36:19,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:19,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1357 transitions. [2023-08-27 00:36:19,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 339.25) internal successors, (1357), 4 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:19,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:19,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:19,908 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 490 flow. Second operand 4 states and 1357 transitions. [2023-08-27 00:36:19,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 768 flow [2023-08-27 00:36:19,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 716 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-27 00:36:19,918 INFO L231 Difference]: Finished difference. Result has 65 places, 81 transitions, 467 flow [2023-08-27 00:36:19,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=467, PETRI_PLACES=65, PETRI_TRANSITIONS=81} [2023-08-27 00:36:19,918 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2023-08-27 00:36:19,918 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 81 transitions, 467 flow [2023-08-27 00:36:19,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:19,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:19,919 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-27 00:36:19,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 00:36:20,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 00:36:20,124 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:20,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1825250090, now seen corresponding path program 2 times [2023-08-27 00:36:20,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:20,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142570308] [2023-08-27 00:36:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:20,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:20,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:20,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142570308] [2023-08-27 00:36:20,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142570308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:20,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950749216] [2023-08-27 00:36:20,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:20,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:20,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:20,471 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:20,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 00:36:20,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:20,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:20,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:36:20,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:20,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:21,036 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:21,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 268 treesize of output 274 [2023-08-27 00:36:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:21,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950749216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:21,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 00:36:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940990983] [2023-08-27 00:36:21,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:21,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:36:21,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:36:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:36:21,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 849 [2023-08-27 00:36:21,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 81 transitions, 467 flow. Second operand has 13 states, 13 states have (on average 258.84615384615387) internal successors, (3365), 13 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:21,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:21,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 849 [2023-08-27 00:36:21,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:23,078 INFO L124 PetriNetUnfolderBase]: 7272/10504 cut-off events. [2023-08-27 00:36:23,078 INFO L125 PetriNetUnfolderBase]: For 7670/7670 co-relation queries the response was YES. [2023-08-27 00:36:23,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27641 conditions, 10504 events. 7272/10504 cut-off events. For 7670/7670 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 54248 event pairs, 1824 based on Foata normal form. 720/11208 useless extension candidates. Maximal degree in co-relation 27614. Up to 3936 conditions per place. [2023-08-27 00:36:23,127 INFO L140 encePairwiseOnDemand]: 836/849 looper letters, 123 selfloop transitions, 22 changer transitions 26/171 dead transitions. [2023-08-27 00:36:23,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 171 transitions, 1079 flow [2023-08-27 00:36:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:36:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:36:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2655 transitions. [2023-08-27 00:36:23,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3127208480565371 [2023-08-27 00:36:23,131 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2655 transitions. [2023-08-27 00:36:23,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2655 transitions. [2023-08-27 00:36:23,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:23,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2655 transitions. [2023-08-27 00:36:23,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 265.5) internal successors, (2655), 10 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:23,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 849.0) internal successors, (9339), 11 states have internal predecessors, (9339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:23,155 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 849.0) internal successors, (9339), 11 states have internal predecessors, (9339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:23,155 INFO L175 Difference]: Start difference. First operand has 65 places, 81 transitions, 467 flow. Second operand 10 states and 2655 transitions. [2023-08-27 00:36:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 171 transitions, 1079 flow [2023-08-27 00:36:23,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 171 transitions, 1066 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:23,164 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 529 flow [2023-08-27 00:36:23,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=529, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-27 00:36:23,164 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2023-08-27 00:36:23,165 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 529 flow [2023-08-27 00:36:23,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 258.84615384615387) internal successors, (3365), 13 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:23,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:23,165 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] [2023-08-27 00:36:23,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:23,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 00:36:23,371 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:23,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash 792841724, now seen corresponding path program 1 times [2023-08-27 00:36:23,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:23,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440548103] [2023-08-27 00:36:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:24,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440548103] [2023-08-27 00:36:24,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440548103] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:24,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929054795] [2023-08-27 00:36:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:24,128 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:24,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 00:36:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:24,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 00:36:24,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:24,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:25,965 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:25,965 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 421 treesize of output 610 [2023-08-27 00:36:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:31,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929054795] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:31,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:31,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-27 00:36:31,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087857188] [2023-08-27 00:36:31,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:31,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 00:36:31,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 00:36:31,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-27 00:36:31,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 849 [2023-08-27 00:36:31,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 529 flow. Second operand has 16 states, 16 states have (on average 229.625) internal successors, (3674), 16 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:31,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:31,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 849 [2023-08-27 00:36:31,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:34,983 INFO L124 PetriNetUnfolderBase]: 13369/19402 cut-off events. [2023-08-27 00:36:34,983 INFO L125 PetriNetUnfolderBase]: For 26437/26437 co-relation queries the response was YES. [2023-08-27 00:36:35,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55883 conditions, 19402 events. 13369/19402 cut-off events. For 26437/26437 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 112833 event pairs, 2291 based on Foata normal form. 24/19393 useless extension candidates. Maximal degree in co-relation 55854. Up to 9129 conditions per place. [2023-08-27 00:36:35,064 INFO L140 encePairwiseOnDemand]: 835/849 looper letters, 175 selfloop transitions, 44 changer transitions 46/265 dead transitions. [2023-08-27 00:36:35,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 265 transitions, 1841 flow [2023-08-27 00:36:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 00:36:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 00:36:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3336 transitions. [2023-08-27 00:36:35,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28066633013629483 [2023-08-27 00:36:35,069 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3336 transitions. [2023-08-27 00:36:35,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3336 transitions. [2023-08-27 00:36:35,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:35,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3336 transitions. [2023-08-27 00:36:35,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 238.28571428571428) internal successors, (3336), 14 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:35,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 849.0) internal successors, (12735), 15 states have internal predecessors, (12735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:35,078 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 849.0) internal successors, (12735), 15 states have internal predecessors, (12735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:35,078 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 529 flow. Second operand 14 states and 3336 transitions. [2023-08-27 00:36:35,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 265 transitions, 1841 flow [2023-08-27 00:36:35,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 265 transitions, 1765 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-27 00:36:35,174 INFO L231 Difference]: Finished difference. Result has 87 places, 117 transitions, 908 flow [2023-08-27 00:36:35,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=908, PETRI_PLACES=87, PETRI_TRANSITIONS=117} [2023-08-27 00:36:35,174 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2023-08-27 00:36:35,174 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 117 transitions, 908 flow [2023-08-27 00:36:35,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 229.625) internal successors, (3674), 16 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:35,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:35,175 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] [2023-08-27 00:36:35,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-27 00:36:35,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:35,380 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:35,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:35,381 INFO L85 PathProgramCache]: Analyzing trace with hash -287779524, now seen corresponding path program 1 times [2023-08-27 00:36:35,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:35,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912482516] [2023-08-27 00:36:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:35,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:35,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:35,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912482516] [2023-08-27 00:36:35,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912482516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:35,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:35,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:36:35,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812373868] [2023-08-27 00:36:35,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:35,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:36:35,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:35,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:36:35,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:36:35,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 849 [2023-08-27 00:36:35,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 117 transitions, 908 flow. Second operand has 5 states, 5 states have (on average 281.8) internal successors, (1409), 5 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:35,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:35,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 849 [2023-08-27 00:36:35,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:38,068 INFO L124 PetriNetUnfolderBase]: 11489/17026 cut-off events. [2023-08-27 00:36:38,068 INFO L125 PetriNetUnfolderBase]: For 30501/30501 co-relation queries the response was YES. [2023-08-27 00:36:38,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52537 conditions, 17026 events. 11489/17026 cut-off events. For 30501/30501 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 101040 event pairs, 7869 based on Foata normal form. 560/17562 useless extension candidates. Maximal degree in co-relation 52504. Up to 7439 conditions per place. [2023-08-27 00:36:38,149 INFO L140 encePairwiseOnDemand]: 839/849 looper letters, 134 selfloop transitions, 45 changer transitions 0/179 dead transitions. [2023-08-27 00:36:38,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 179 transitions, 1663 flow [2023-08-27 00:36:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:36:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:36:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1737 transitions. [2023-08-27 00:36:38,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409893992932862 [2023-08-27 00:36:38,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1737 transitions. [2023-08-27 00:36:38,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1737 transitions. [2023-08-27 00:36:38,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:38,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1737 transitions. [2023-08-27 00:36:38,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.5) internal successors, (1737), 6 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:38,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:38,155 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:38,155 INFO L175 Difference]: Start difference. First operand has 87 places, 117 transitions, 908 flow. Second operand 6 states and 1737 transitions. [2023-08-27 00:36:38,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 179 transitions, 1663 flow [2023-08-27 00:36:38,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 179 transitions, 1551 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:38,263 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 932 flow [2023-08-27 00:36:38,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=932, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2023-08-27 00:36:38,264 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2023-08-27 00:36:38,264 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 932 flow [2023-08-27 00:36:38,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.8) internal successors, (1409), 5 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:38,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:38,264 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] [2023-08-27 00:36:38,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 00:36:38,264 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:38,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:38,265 INFO L85 PathProgramCache]: Analyzing trace with hash -311715649, now seen corresponding path program 1 times [2023-08-27 00:36:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:38,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746623289] [2023-08-27 00:36:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:38,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:38,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746623289] [2023-08-27 00:36:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746623289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855228955] [2023-08-27 00:36:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:38,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:38,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:38,620 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:38,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 00:36:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:38,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:36:38,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:38,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:39,827 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:39,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 788 treesize of output 863 [2023-08-27 00:36:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:40,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855228955] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:40,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:40,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-27 00:36:40,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072287762] [2023-08-27 00:36:40,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:40,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:36:40,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:36:40,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:36:40,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 849 [2023-08-27 00:36:40,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 932 flow. Second operand has 11 states, 11 states have (on average 241.1818181818182) internal successors, (2653), 11 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:40,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:40,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 849 [2023-08-27 00:36:40,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:43,638 INFO L124 PetriNetUnfolderBase]: 12237/18270 cut-off events. [2023-08-27 00:36:43,638 INFO L125 PetriNetUnfolderBase]: For 28144/28144 co-relation queries the response was YES. [2023-08-27 00:36:43,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52413 conditions, 18270 events. 12237/18270 cut-off events. For 28144/28144 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 109735 event pairs, 4453 based on Foata normal form. 576/18822 useless extension candidates. Maximal degree in co-relation 52380. Up to 7305 conditions per place. [2023-08-27 00:36:43,695 INFO L140 encePairwiseOnDemand]: 836/849 looper letters, 131 selfloop transitions, 41 changer transitions 17/189 dead transitions. [2023-08-27 00:36:43,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 189 transitions, 1562 flow [2023-08-27 00:36:43,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:36:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:36:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1990 transitions. [2023-08-27 00:36:43,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29299175500588925 [2023-08-27 00:36:43,698 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1990 transitions. [2023-08-27 00:36:43,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1990 transitions. [2023-08-27 00:36:43,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:43,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1990 transitions. [2023-08-27 00:36:43,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 248.75) internal successors, (1990), 8 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:43,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 849.0) internal successors, (7641), 9 states have internal predecessors, (7641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:43,703 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 849.0) internal successors, (7641), 9 states have internal predecessors, (7641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:43,703 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 932 flow. Second operand 8 states and 1990 transitions. [2023-08-27 00:36:43,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 189 transitions, 1562 flow [2023-08-27 00:36:43,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 189 transitions, 1484 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:36:43,751 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 954 flow [2023-08-27 00:36:43,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=954, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2023-08-27 00:36:43,751 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 23 predicate places. [2023-08-27 00:36:43,751 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 954 flow [2023-08-27 00:36:43,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.1818181818182) internal successors, (2653), 11 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:43,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:43,752 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] [2023-08-27 00:36:43,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 00:36:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 00:36:43,958 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:43,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1311814404, now seen corresponding path program 1 times [2023-08-27 00:36:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752797585] [2023-08-27 00:36:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:44,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:44,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752797585] [2023-08-27 00:36:44,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752797585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:44,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174191619] [2023-08-27 00:36:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:44,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:44,302 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:44,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 00:36:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:44,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:36:44,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:44,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:45,602 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:45,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 785 treesize of output 860 [2023-08-27 00:36:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:47,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174191619] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:47,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:47,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-27 00:36:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021534352] [2023-08-27 00:36:47,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:47,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:36:47,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:36:47,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:36:47,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 849 [2023-08-27 00:36:47,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 954 flow. Second operand has 9 states, 9 states have (on average 285.8888888888889) internal successors, (2573), 9 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:47,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:47,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 849 [2023-08-27 00:36:47,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:49,971 INFO L124 PetriNetUnfolderBase]: 13473/20250 cut-off events. [2023-08-27 00:36:49,971 INFO L125 PetriNetUnfolderBase]: For 37988/37988 co-relation queries the response was YES. [2023-08-27 00:36:50,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57894 conditions, 20250 events. 13473/20250 cut-off events. For 37988/37988 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 124046 event pairs, 4581 based on Foata normal form. 616/20842 useless extension candidates. Maximal degree in co-relation 57860. Up to 6458 conditions per place. [2023-08-27 00:36:50,052 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 143 selfloop transitions, 16 changer transitions 9/168 dead transitions. [2023-08-27 00:36:50,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 168 transitions, 1406 flow [2023-08-27 00:36:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:36:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:36:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1769 transitions. [2023-08-27 00:36:50,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34727129956811936 [2023-08-27 00:36:50,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1769 transitions. [2023-08-27 00:36:50,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1769 transitions. [2023-08-27 00:36:50,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:50,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1769 transitions. [2023-08-27 00:36:50,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.8333333333333) internal successors, (1769), 6 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:50,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:50,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:50,059 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 954 flow. Second operand 6 states and 1769 transitions. [2023-08-27 00:36:50,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 168 transitions, 1406 flow [2023-08-27 00:36:50,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 168 transitions, 1346 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 00:36:50,145 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 870 flow [2023-08-27 00:36:50,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=870, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2023-08-27 00:36:50,146 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2023-08-27 00:36:50,146 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 870 flow [2023-08-27 00:36:50,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 285.8888888888889) internal successors, (2573), 9 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:50,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:50,146 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-27 00:36:50,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:50,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:50,352 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:50,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1277055728, now seen corresponding path program 2 times [2023-08-27 00:36:50,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:50,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286383924] [2023-08-27 00:36:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:50,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:50,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:50,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286383924] [2023-08-27 00:36:50,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286383924] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:50,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742952365] [2023-08-27 00:36:50,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:50,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:50,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:50,734 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:50,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 00:36:50,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:50,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:50,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 00:36:50,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:36:51,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:52,294 INFO L322 Elim1Store]: treesize reduction 114, result has 68.9 percent of original size [2023-08-27 00:36:52,295 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 888 treesize of output 1020 [2023-08-27 00:37:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:37:11,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742952365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:11,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:11,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-08-27 00:37:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357130082] [2023-08-27 00:37:11,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 00:37:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 00:37:11,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:37:11,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 849 [2023-08-27 00:37:11,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 870 flow. Second operand has 14 states, 14 states have (on average 223.85714285714286) internal successors, (3134), 14 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:11,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:11,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 849 [2023-08-27 00:37:11,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:13,491 INFO L124 PetriNetUnfolderBase]: 9801/15094 cut-off events. [2023-08-27 00:37:13,491 INFO L125 PetriNetUnfolderBase]: For 23048/23048 co-relation queries the response was YES. [2023-08-27 00:37:13,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42882 conditions, 15094 events. 9801/15094 cut-off events. For 23048/23048 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 93019 event pairs, 2637 based on Foata normal form. 160/15230 useless extension candidates. Maximal degree in co-relation 42846. Up to 5157 conditions per place. [2023-08-27 00:37:13,558 INFO L140 encePairwiseOnDemand]: 838/849 looper letters, 139 selfloop transitions, 40 changer transitions 43/222 dead transitions. [2023-08-27 00:37:13,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 222 transitions, 1674 flow [2023-08-27 00:37:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:37:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:37:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2554 transitions. [2023-08-27 00:37:13,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27347681764642895 [2023-08-27 00:37:13,561 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2554 transitions. [2023-08-27 00:37:13,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2554 transitions. [2023-08-27 00:37:13,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:13,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2554 transitions. [2023-08-27 00:37:13,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.1818181818182) internal successors, (2554), 11 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:13,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 849.0) internal successors, (10188), 12 states have internal predecessors, (10188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:13,568 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 849.0) internal successors, (10188), 12 states have internal predecessors, (10188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:13,568 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 870 flow. Second operand 11 states and 2554 transitions. [2023-08-27 00:37:13,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 222 transitions, 1674 flow [2023-08-27 00:37:13,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 222 transitions, 1643 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:37:13,682 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 927 flow [2023-08-27 00:37:13,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=927, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2023-08-27 00:37:13,683 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 32 predicate places. [2023-08-27 00:37:13,683 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 927 flow [2023-08-27 00:37:13,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 223.85714285714286) internal successors, (3134), 14 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:13,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:13,684 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-27 00:37:13,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:13,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:13,889 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:37:13,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash -840974029, now seen corresponding path program 1 times [2023-08-27 00:37:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:13,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559412967] [2023-08-27 00:37:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:37:14,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:14,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559412967] [2023-08-27 00:37:14,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559412967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:14,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712308177] [2023-08-27 00:37:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:14,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:14,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:14,167 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:14,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 00:37:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:14,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:37:14,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:37:14,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:16,301 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:16,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 504 treesize of output 693 [2023-08-27 00:37:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:37:35,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712308177] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:35,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:35,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 00:37:35,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742576842] [2023-08-27 00:37:35,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:35,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:37:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:35,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:37:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:37:35,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 849 [2023-08-27 00:37:35,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 927 flow. Second operand has 12 states, 12 states have (on average 282.5833333333333) internal successors, (3391), 12 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:35,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:35,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 849 [2023-08-27 00:37:35,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:38,239 INFO L124 PetriNetUnfolderBase]: 9453/14386 cut-off events. [2023-08-27 00:37:38,239 INFO L125 PetriNetUnfolderBase]: For 26890/26890 co-relation queries the response was YES. [2023-08-27 00:37:38,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41496 conditions, 14386 events. 9453/14386 cut-off events. For 26890/26890 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 85358 event pairs, 1921 based on Foata normal form. 420/14788 useless extension candidates. Maximal degree in co-relation 41459. Up to 2985 conditions per place. [2023-08-27 00:37:38,290 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 131 selfloop transitions, 16 changer transitions 33/180 dead transitions. [2023-08-27 00:37:38,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 180 transitions, 1493 flow [2023-08-27 00:37:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:37:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:37:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2045 transitions. [2023-08-27 00:37:38,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3441023052330473 [2023-08-27 00:37:38,292 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2045 transitions. [2023-08-27 00:37:38,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2045 transitions. [2023-08-27 00:37:38,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:38,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2045 transitions. [2023-08-27 00:37:38,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 292.14285714285717) internal successors, (2045), 7 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:38,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 849.0) internal successors, (6792), 8 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:38,296 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 849.0) internal successors, (6792), 8 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:38,297 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 927 flow. Second operand 7 states and 2045 transitions. [2023-08-27 00:37:38,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 180 transitions, 1493 flow [2023-08-27 00:37:38,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 1423 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-27 00:37:38,353 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 776 flow [2023-08-27 00:37:38,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=776, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2023-08-27 00:37:38,353 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2023-08-27 00:37:38,353 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 776 flow [2023-08-27 00:37:38,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 282.5833333333333) internal successors, (3391), 12 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:38,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:38,354 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-27 00:37:38,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:38,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:38,560 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:37:38,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1778485275, now seen corresponding path program 1 times [2023-08-27 00:37:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:38,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686221046] [2023-08-27 00:37:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:39,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:39,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686221046] [2023-08-27 00:37:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686221046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:39,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115683795] [2023-08-27 00:37:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:39,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:39,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:39,557 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:39,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 00:37:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:39,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 00:37:39,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:37:39,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:42,831 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:42,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 503 treesize of output 885 [2023-08-27 00:37:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:37:56,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115683795] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:56,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:56,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 4] total 15 [2023-08-27 00:37:56,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049234692] [2023-08-27 00:37:56,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:56,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:37:56,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:56,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:37:56,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:37:56,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 849 [2023-08-27 00:37:56,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 776 flow. Second operand has 17 states, 17 states have (on average 215.88235294117646) internal successors, (3670), 17 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:56,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:56,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 849 [2023-08-27 00:37:56,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:59,393 INFO L124 PetriNetUnfolderBase]: 10131/15313 cut-off events. [2023-08-27 00:37:59,393 INFO L125 PetriNetUnfolderBase]: For 31688/31688 co-relation queries the response was YES. [2023-08-27 00:37:59,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46162 conditions, 15313 events. 10131/15313 cut-off events. For 31688/31688 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 91574 event pairs, 2077 based on Foata normal form. 12/15307 useless extension candidates. Maximal degree in co-relation 46126. Up to 5789 conditions per place. [2023-08-27 00:37:59,503 INFO L140 encePairwiseOnDemand]: 835/849 looper letters, 129 selfloop transitions, 86 changer transitions 57/272 dead transitions. [2023-08-27 00:37:59,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 272 transitions, 2065 flow [2023-08-27 00:37:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 00:37:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 00:37:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3564 transitions. [2023-08-27 00:37:59,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2623674911660777 [2023-08-27 00:37:59,507 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3564 transitions. [2023-08-27 00:37:59,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3564 transitions. [2023-08-27 00:37:59,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:59,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3564 transitions. [2023-08-27 00:37:59,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 222.75) internal successors, (3564), 16 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:59,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 849.0) internal successors, (14433), 17 states have internal predecessors, (14433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:59,517 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 849.0) internal successors, (14433), 17 states have internal predecessors, (14433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:59,517 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 776 flow. Second operand 16 states and 3564 transitions. [2023-08-27 00:37:59,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 272 transitions, 2065 flow [2023-08-27 00:37:59,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 272 transitions, 1958 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-27 00:37:59,587 INFO L231 Difference]: Finished difference. Result has 107 places, 140 transitions, 1286 flow [2023-08-27 00:37:59,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1286, PETRI_PLACES=107, PETRI_TRANSITIONS=140} [2023-08-27 00:37:59,588 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 37 predicate places. [2023-08-27 00:37:59,588 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 140 transitions, 1286 flow [2023-08-27 00:37:59,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 215.88235294117646) internal successors, (3670), 17 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:59,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:59,588 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-27 00:37:59,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:59,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:59,795 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:37:59,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:59,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2015604043, now seen corresponding path program 1 times [2023-08-27 00:37:59,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:59,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744510059] [2023-08-27 00:37:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:59,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:01,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:01,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744510059] [2023-08-27 00:38:01,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744510059] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:01,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245782928] [2023-08-27 00:38:01,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:01,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:01,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:01,807 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:01,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 00:38:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:02,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 00:38:02,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:38:02,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:06,145 INFO L322 Elim1Store]: treesize reduction 236, result has 69.3 percent of original size [2023-08-27 00:38:06,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1412 treesize of output 1687 Received shutdown request... [2023-08-27 00:49:29,895 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 00:49:29,897 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (60 of 61 remaining) [2023-08-27 00:49:29,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-27 00:49:29,928 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:49:29,928 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:49:30,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-27 00:49:30,101 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. [2023-08-27 00:49:30,113 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 61 remaining) [2023-08-27 00:49:30,113 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 61 remaining) [2023-08-27 00:49:30,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 61 remaining) [2023-08-27 00:49:30,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 61 remaining) [2023-08-27 00:49:30,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 61 remaining) [2023-08-27 00:49:30,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 61 remaining) [2023-08-27 00:49:30,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 61 remaining) [2023-08-27 00:49:30,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 61 remaining) [2023-08-27 00:49:30,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 61 remaining) [2023-08-27 00:49:30,115 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 61 remaining) [2023-08-27 00:49:30,116 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 61 remaining) [2023-08-27 00:49:30,116 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 61 remaining) [2023-08-27 00:49:30,117 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 61 remaining) [2023-08-27 00:49:30,117 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 61 remaining) [2023-08-27 00:49:30,117 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 61 remaining) [2023-08-27 00:49:30,117 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 61 remaining) [2023-08-27 00:49:30,117 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 61 remaining) [2023-08-27 00:49:30,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 61 remaining) [2023-08-27 00:49:30,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 61 remaining) [2023-08-27 00:49:30,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 61 remaining) [2023-08-27 00:49:30,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 61 remaining) [2023-08-27 00:49:30,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 61 remaining) [2023-08-27 00:49:30,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 61 remaining) [2023-08-27 00:49:30,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 61 remaining) [2023-08-27 00:49:30,120 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 61 remaining) [2023-08-27 00:49:30,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 61 remaining) [2023-08-27 00:49:30,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 61 remaining) [2023-08-27 00:49:30,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 61 remaining) [2023-08-27 00:49:30,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 61 remaining) [2023-08-27 00:49:30,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 61 remaining) [2023-08-27 00:49:30,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 61 remaining) [2023-08-27 00:49:30,121 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-08-27 00:49:30,140 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:49:30,141 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:49:30,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:49:30 BasicIcfg [2023-08-27 00:49:30,143 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:49:30,143 INFO L158 Benchmark]: Toolchain (without parser) took 852773.01ms. Allocated memory was 356.5MB in the beginning and 4.6GB in the end (delta: 4.3GB). Free memory was 310.5MB in the beginning and 2.6GB in the end (delta: -2.3GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-27 00:49:30,143 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 332.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:49:30,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.65ms. Allocated memory is still 356.5MB. Free memory was 309.4MB in the beginning and 294.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 00:49:30,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.58ms. Allocated memory is still 356.5MB. Free memory was 294.7MB in the beginning and 291.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:49:30,147 INFO L158 Benchmark]: Boogie Preprocessor took 43.13ms. Allocated memory is still 356.5MB. Free memory was 291.6MB in the beginning and 288.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 00:49:30,147 INFO L158 Benchmark]: RCFGBuilder took 938.88ms. Allocated memory is still 356.5MB. Free memory was 288.4MB in the beginning and 197.2MB in the end (delta: 91.2MB). Peak memory consumption was 90.2MB. Max. memory is 16.0GB. [2023-08-27 00:49:30,147 INFO L158 Benchmark]: TraceAbstraction took 851481.49ms. Allocated memory was 356.5MB in the beginning and 4.6GB in the end (delta: 4.3GB). Free memory was 196.2MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 2.7GB. Max. memory is 16.0GB. [2023-08-27 00:49:30,148 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 332.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 248.65ms. Allocated memory is still 356.5MB. Free memory was 309.4MB in the beginning and 294.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.58ms. Allocated memory is still 356.5MB. Free memory was 294.7MB in the beginning and 291.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 43.13ms. Allocated memory is still 356.5MB. Free memory was 291.6MB in the beginning and 288.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 938.88ms. Allocated memory is still 356.5MB. Free memory was 288.4MB in the beginning and 197.2MB in the end (delta: 91.2MB). Peak memory consumption was 90.2MB. Max. memory is 16.0GB. * TraceAbstraction took 851481.49ms. Allocated memory was 356.5MB in the beginning and 4.6GB in the end (delta: 4.3GB). Free memory was 196.2MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 2.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.3s, 353 PlacesBefore, 70 PlacesAfterwards, 377 TransitionsBefore, 65 TransitionsAfterwards, 9264 CoEnabledTransitionPairs, 7 FixpointIterations, 243 TrivialSequentialCompositions, 128 ConcurrentSequentialCompositions, 42 TrivialYvCompositions, 13 ConcurrentYvCompositions, 29 ChoiceCompositions, 455 TotalNumberOfCompositions, 11507 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10992, independent: 10972, independent conditional: 0, independent unconditional: 10972, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4444, independent: 4434, independent conditional: 0, independent unconditional: 4434, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10992, independent: 6538, independent conditional: 0, independent unconditional: 6538, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 4444, unknown conditional: 0, unknown unconditional: 4444] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 235, Positive conditional cache size: 0, Positive unconditional cache size: 235, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 37ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 438 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 851.3s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 62.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1890 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1890 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 253 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4467 IncrementalHoareTripleChecker+Invalid, 4720 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 253 mSolverCounterUnsat, 0 mSDtfsCounter, 4467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 725 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1286occurred in iteration=33, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 77.1s InterpolantComputationTime, 922 NumberOfCodeBlocks, 918 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 1097 ConstructedInterpolants, 21 QuantifiedInterpolants, 17524 SizeOfPredicates, 365 NumberOfNonLiveVariables, 6819 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 61 InterpolantComputations, 24 PerfectInterpolantSequences, 113/183 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown