/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-difference-det.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:52:41,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:52:41,628 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 00:52:41,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:52:41,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:52:41,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:52:41,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:52:41,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:52:41,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:52:41,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:52:41,652 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:52:41,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:52:41,652 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:52:41,653 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:52:41,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:52:41,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:52:41,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:52:41,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:52:41,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:52:41,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:52:41,655 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:52:41,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:52:41,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:52:41,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:52:41,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:52:41,662 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:52:41,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:52:41,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:52:41,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:52:41,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:52:41,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:52:41,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:52:41,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:52:41,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:52:41,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:52:41,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:52:42,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:52:42,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:52:42,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:52:42,053 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:52:42,054 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:52:42,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2023-08-27 00:52:43,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:52:43,559 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:52:43,560 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2023-08-27 00:52:43,566 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe9ad0ce/f336e2f325b746dba409c28a074c9e35/FLAG495da677b [2023-08-27 00:52:43,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe9ad0ce/f336e2f325b746dba409c28a074c9e35 [2023-08-27 00:52:43,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:52:43,590 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:52:43,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:52:43,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:52:43,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:52:43,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b12d047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43, skipping insertion in model container [2023-08-27 00:52:43,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,620 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:52:43,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:52:43,807 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:52:43,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:52:43,848 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:52:43,850 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:52:43,856 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:52:43,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43 WrapperNode [2023-08-27 00:52:43,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:52:43,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:52:43,860 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:52:43,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:52:43,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,909 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-08-27 00:52:43,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:52:43,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:52:43,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:52:43,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:52:43,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:52:43,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:52:43,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:52:43,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:52:43,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (1/1) ... [2023-08-27 00:52:43,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:52:43,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:52:43,986 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 00:52:44,010 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 00:52:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:52:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:52:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:52:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:52:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:52:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:52:44,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:52:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 00:52:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 00:52:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:52:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:52:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:52:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:52:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:52:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:52:44,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:52:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:52:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:52:44,031 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 00:52:44,146 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:52:44,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:52:44,444 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:52:44,549 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:52:44,549 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 00:52:44,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:52:44 BoogieIcfgContainer [2023-08-27 00:52:44,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:52:44,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:52:44,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:52:44,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:52:44,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:52:43" (1/3) ... [2023-08-27 00:52:44,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b94d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:52:44, skipping insertion in model container [2023-08-27 00:52:44,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:52:43" (2/3) ... [2023-08-27 00:52:44,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b94d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:52:44, skipping insertion in model container [2023-08-27 00:52:44,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:52:44" (3/3) ... [2023-08-27 00:52:44,559 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2023-08-27 00:52:44,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:52:44,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-27 00:52:44,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:52:44,651 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 00:52:44,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 154 transitions, 340 flow [2023-08-27 00:52:44,741 INFO L124 PetriNetUnfolderBase]: 9/150 cut-off events. [2023-08-27 00:52:44,741 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:52:44,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 150 events. 9/150 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 222 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-08-27 00:52:44,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 154 transitions, 340 flow [2023-08-27 00:52:44,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 137 transitions, 298 flow [2023-08-27 00:52:44,757 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:52:44,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 137 transitions, 298 flow [2023-08-27 00:52:44,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 137 transitions, 298 flow [2023-08-27 00:52:44,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 137 transitions, 298 flow [2023-08-27 00:52:44,796 INFO L124 PetriNetUnfolderBase]: 9/137 cut-off events. [2023-08-27 00:52:44,796 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:52:44,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 9/137 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 221 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2023-08-27 00:52:44,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-08-27 00:52:48,837 INFO L134 LiptonReduction]: Checked pairs total: 6533 [2023-08-27 00:52:48,838 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-27 00:52:48,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:52:48,854 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@246af79e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:52:48,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 00:52:48,856 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:52:48,857 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 00:52:48,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:52:48,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:52:48,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:52:48,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:52:48,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:52:48,862 INFO L85 PathProgramCache]: Analyzing trace with hash 19847562, now seen corresponding path program 1 times [2023-08-27 00:52:48,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:52:48,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704181523] [2023-08-27 00:52:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:52:48,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:52:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:52:49,053 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 00:52:49,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:52:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704181523] [2023-08-27 00:52:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704181523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:52:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:52:49,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:52:49,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870214104] [2023-08-27 00:52:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:52:49,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:52:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:52:49,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:52:49,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:52:49,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 276 [2023-08-27 00:52:49,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 00:52:49,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:52:49,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 276 [2023-08-27 00:52:49,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:52:51,214 INFO L124 PetriNetUnfolderBase]: 24773/29661 cut-off events. [2023-08-27 00:52:51,214 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2023-08-27 00:52:51,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60385 conditions, 29661 events. 24773/29661 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 1993. Compared 127324 event pairs, 3059 based on Foata normal form. 0/8331 useless extension candidates. Maximal degree in co-relation 55402. Up to 26809 conditions per place. [2023-08-27 00:52:51,436 INFO L140 encePairwiseOnDemand]: 264/276 looper letters, 66 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-27 00:52:51,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 333 flow [2023-08-27 00:52:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:52:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:52:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-27 00:52:51,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531400966183575 [2023-08-27 00:52:51,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-27 00:52:51,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-27 00:52:51,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:52:51,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-27 00:52:51,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 00:52:51,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:52:51,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:52:51,474 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 114 flow. Second operand 3 states and 458 transitions. [2023-08-27 00:52:51,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 333 flow [2023-08-27 00:52:51,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 303 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 00:52:51,503 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 130 flow [2023-08-27 00:52:51,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-08-27 00:52:51,508 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-27 00:52:51,508 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 130 flow [2023-08-27 00:52:51,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 00:52:51,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:52:51,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:52:51,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:52:51,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:52:51,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:52:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash 19847635, now seen corresponding path program 1 times [2023-08-27 00:52:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:52:51,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023566978] [2023-08-27 00:52:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:52:51,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:52:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:52:51,604 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 00:52:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:52:51,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023566978] [2023-08-27 00:52:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023566978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:52:51,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:52:51,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:52:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364817366] [2023-08-27 00:52:51,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:52:51,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:52:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:52:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:52:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:52:51,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 276 [2023-08-27 00:52:51,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 00:52:51,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:52:51,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 276 [2023-08-27 00:52:51,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:52:53,454 INFO L124 PetriNetUnfolderBase]: 22636/27725 cut-off events. [2023-08-27 00:52:53,454 INFO L125 PetriNetUnfolderBase]: For 1875/1903 co-relation queries the response was YES. [2023-08-27 00:52:53,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63766 conditions, 27725 events. 22636/27725 cut-off events. For 1875/1903 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 132033 event pairs, 8316 based on Foata normal form. 0/10138 useless extension candidates. Maximal degree in co-relation 13541. Up to 26389 conditions per place. [2023-08-27 00:52:53,608 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 58 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-27 00:52:53,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 285 flow [2023-08-27 00:52:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:52:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:52:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-27 00:52:53,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2023-08-27 00:52:53,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-27 00:52:53,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-27 00:52:53,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:52:53,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-27 00:52:53,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 00:52:53,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:52:53,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:52:53,615 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 130 flow. Second operand 3 states and 429 transitions. [2023-08-27 00:52:53,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 285 flow [2023-08-27 00:52:53,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:52:53,621 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 131 flow [2023-08-27 00:52:53,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-27 00:52:53,622 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-27 00:52:53,622 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 131 flow [2023-08-27 00:52:53,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 00:52:53,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:52:53,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:52:53,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:52:53,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:52:53,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:52:53,624 INFO L85 PathProgramCache]: Analyzing trace with hash 615277717, now seen corresponding path program 1 times [2023-08-27 00:52:53,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:52:53,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042630436] [2023-08-27 00:52:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:52:53,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:52:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:52:53,702 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 00:52:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:52:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042630436] [2023-08-27 00:52:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042630436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:52:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900231228] [2023-08-27 00:52:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:52:53,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:52:53,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:52:53,713 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 00:52:53,762 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 00:52:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:52:53,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:52:53,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:52:53,850 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 00:52:53,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:52:53,872 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 00:52:53,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900231228] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:52:53,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:52:53,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 00:52:53,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041265243] [2023-08-27 00:52:53,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:52:53,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:52:53,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:52:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:52:53,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:52:53,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 276 [2023-08-27 00:52:53,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 123.42857142857143) internal successors, (864), 7 states have internal predecessors, (864), 0 states have call successors, (0), 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 00:52:53,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:52:53,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 276 [2023-08-27 00:52:53,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:52:57,415 INFO L124 PetriNetUnfolderBase]: 55489/65996 cut-off events. [2023-08-27 00:52:57,415 INFO L125 PetriNetUnfolderBase]: For 3179/3179 co-relation queries the response was YES. [2023-08-27 00:52:57,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158439 conditions, 65996 events. 55489/65996 cut-off events. For 3179/3179 co-relation queries the response was YES. Maximal size of possible extension queue 4051. Compared 308144 event pairs, 9357 based on Foata normal form. 0/23674 useless extension candidates. Maximal degree in co-relation 19760. Up to 25362 conditions per place. [2023-08-27 00:52:57,773 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 155 selfloop transitions, 13 changer transitions 0/171 dead transitions. [2023-08-27 00:52:57,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 171 transitions, 796 flow [2023-08-27 00:52:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:52:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:52:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1025 transitions. [2023-08-27 00:52:57,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305383022774327 [2023-08-27 00:52:57,777 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1025 transitions. [2023-08-27 00:52:57,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1025 transitions. [2023-08-27 00:52:57,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:52:57,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1025 transitions. [2023-08-27 00:52:57,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.42857142857142) internal successors, (1025), 7 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 00:52:57,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 276.0) internal successors, (2208), 8 states have internal predecessors, (2208), 0 states have call successors, (0), 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 00:52:57,785 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 276.0) internal successors, (2208), 8 states have internal predecessors, (2208), 0 states have call successors, (0), 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 00:52:57,785 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 131 flow. Second operand 7 states and 1025 transitions. [2023-08-27 00:52:57,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 171 transitions, 796 flow [2023-08-27 00:52:57,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 171 transitions, 789 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 00:52:57,801 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 208 flow [2023-08-27 00:52:57,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-08-27 00:52:57,802 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-08-27 00:52:57,802 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 208 flow [2023-08-27 00:52:57,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.42857142857143) internal successors, (864), 7 states have internal predecessors, (864), 0 states have call successors, (0), 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 00:52:57,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:52:57,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 00:52:57,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:52:58,009 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 00:52:58,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:52:58,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:52:58,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1893741064, now seen corresponding path program 1 times [2023-08-27 00:52:58,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:52:58,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085275661] [2023-08-27 00:52:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:52:58,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:52:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:52:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:52:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:52:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085275661] [2023-08-27 00:52:58,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085275661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:52:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011009517] [2023-08-27 00:52:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:52:58,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:52:58,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:52:58,120 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 00:52:58,125 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 00:52:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:52:58,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:52:58,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:52:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:52:58,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:52:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011009517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:52:58,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:52:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-27 00:52:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994411030] [2023-08-27 00:52:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:52:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:52:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:52:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:52:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:52:58,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 276 [2023-08-27 00:52:58,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 0 states have call successors, (0), 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 00:52:58,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:52:58,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 276 [2023-08-27 00:52:58,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:53:01,349 INFO L124 PetriNetUnfolderBase]: 52238/62143 cut-off events. [2023-08-27 00:53:01,349 INFO L125 PetriNetUnfolderBase]: For 5675/5675 co-relation queries the response was YES. [2023-08-27 00:53:01,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158401 conditions, 62143 events. 52238/62143 cut-off events. For 5675/5675 co-relation queries the response was YES. Maximal size of possible extension queue 3546. Compared 292760 event pairs, 1706 based on Foata normal form. 1204/27410 useless extension candidates. Maximal degree in co-relation 82996. Up to 38602 conditions per place. [2023-08-27 00:53:01,675 INFO L140 encePairwiseOnDemand]: 272/276 looper letters, 106 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2023-08-27 00:53:01,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 117 transitions, 572 flow [2023-08-27 00:53:01,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:53:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:53:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2023-08-27 00:53:01,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231884057971015 [2023-08-27 00:53:01,678 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2023-08-27 00:53:01,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2023-08-27 00:53:01,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:53:01,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2023-08-27 00:53:01,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 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 00:53:01,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 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 00:53:01,686 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 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 00:53:01,686 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 208 flow. Second operand 5 states and 722 transitions. [2023-08-27 00:53:01,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 117 transitions, 572 flow [2023-08-27 00:53:01,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 117 transitions, 558 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 00:53:01,795 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 183 flow [2023-08-27 00:53:01,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-08-27 00:53:01,796 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-08-27 00:53:01,800 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 183 flow [2023-08-27 00:53:01,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 0 states have call successors, (0), 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 00:53:01,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:53:01,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:53:01,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 00:53:02,002 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 00:53:02,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:53:02,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:53:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash 615277643, now seen corresponding path program 1 times [2023-08-27 00:53:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:53:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103117508] [2023-08-27 00:53:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:53:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:02,068 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 00:53:02,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:53:02,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103117508] [2023-08-27 00:53:02,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103117508] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:53:02,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672343588] [2023-08-27 00:53:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:02,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:02,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:53:02,070 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 00:53:02,074 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 00:53:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:02,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:53:02,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:53:02,149 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 00:53:02,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:53:02,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672343588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:53:02,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:53:02,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 00:53:02,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052539980] [2023-08-27 00:53:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:53:02,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:53:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:53:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:53:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:53:02,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 276 [2023-08-27 00:53:02,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 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 00:53:02,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:53:02,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 276 [2023-08-27 00:53:02,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:53:05,533 INFO L124 PetriNetUnfolderBase]: 56638/68068 cut-off events. [2023-08-27 00:53:05,534 INFO L125 PetriNetUnfolderBase]: For 24805/24805 co-relation queries the response was YES. [2023-08-27 00:53:05,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177355 conditions, 68068 events. 56638/68068 cut-off events. For 24805/24805 co-relation queries the response was YES. Maximal size of possible extension queue 4066. Compared 332321 event pairs, 11001 based on Foata normal form. 0/31373 useless extension candidates. Maximal degree in co-relation 88112. Up to 39065 conditions per place. [2023-08-27 00:53:05,863 INFO L140 encePairwiseOnDemand]: 267/276 looper letters, 74 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2023-08-27 00:53:05,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 500 flow [2023-08-27 00:53:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:53:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:53:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-08-27 00:53:05,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235507246376812 [2023-08-27 00:53:05,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-08-27 00:53:05,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-08-27 00:53:05,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:53:05,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-08-27 00:53:05,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 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 00:53:05,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 0 states have call successors, (0), 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 00:53:05,869 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 0 states have call successors, (0), 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 00:53:05,870 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 183 flow. Second operand 4 states and 578 transitions. [2023-08-27 00:53:05,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 500 flow [2023-08-27 00:53:06,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 90 transitions, 482 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:53:06,044 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 294 flow [2023-08-27 00:53:06,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-08-27 00:53:06,045 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-27 00:53:06,045 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 294 flow [2023-08-27 00:53:06,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 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 00:53:06,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:53:06,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:53:06,050 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 00:53:06,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:06,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:53:06,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:53:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 615277644, now seen corresponding path program 1 times [2023-08-27 00:53:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:53:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531226916] [2023-08-27 00:53:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:06,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:53:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:06,303 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 00:53:06,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:53:06,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531226916] [2023-08-27 00:53:06,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531226916] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:53:06,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642447697] [2023-08-27 00:53:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:06,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:06,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:53:06,305 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 00:53:06,331 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 00:53:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:06,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:53:06,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:53:06,387 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 00:53:06,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:53:06,407 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 00:53:06,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642447697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:53:06,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:53:06,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:53:06,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544093576] [2023-08-27 00:53:06,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:53:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:53:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:53:06,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:53:06,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:53:06,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 276 [2023-08-27 00:53:06,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 294 flow. Second operand has 7 states, 7 states have (on average 127.57142857142857) internal successors, (893), 7 states have internal predecessors, (893), 0 states have call successors, (0), 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 00:53:06,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:53:06,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 276 [2023-08-27 00:53:06,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:53:12,438 INFO L124 PetriNetUnfolderBase]: 89795/108347 cut-off events. [2023-08-27 00:53:12,439 INFO L125 PetriNetUnfolderBase]: For 70341/70341 co-relation queries the response was YES. [2023-08-27 00:53:12,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317506 conditions, 108347 events. 89795/108347 cut-off events. For 70341/70341 co-relation queries the response was YES. Maximal size of possible extension queue 5852. Compared 553984 event pairs, 8873 based on Foata normal form. 10399/62884 useless extension candidates. Maximal degree in co-relation 77568. Up to 31703 conditions per place. [2023-08-27 00:53:12,986 INFO L140 encePairwiseOnDemand]: 268/276 looper letters, 171 selfloop transitions, 29 changer transitions 0/204 dead transitions. [2023-08-27 00:53:12,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 204 transitions, 1242 flow [2023-08-27 00:53:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:53:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:53:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 933 transitions. [2023-08-27 00:53:12,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634057971014492 [2023-08-27 00:53:12,989 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 933 transitions. [2023-08-27 00:53:12,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 933 transitions. [2023-08-27 00:53:12,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:53:12,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 933 transitions. [2023-08-27 00:53:12,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 0 states have call successors, (0), 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 00:53:12,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 276.0) internal successors, (1932), 7 states have internal predecessors, (1932), 0 states have call successors, (0), 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 00:53:12,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 276.0) internal successors, (1932), 7 states have internal predecessors, (1932), 0 states have call successors, (0), 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 00:53:12,994 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 294 flow. Second operand 6 states and 933 transitions. [2023-08-27 00:53:12,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 204 transitions, 1242 flow [2023-08-27 00:53:13,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 204 transitions, 1163 flow, removed 39 selfloop flow, removed 1 redundant places. [2023-08-27 00:53:13,230 INFO L231 Difference]: Finished difference. Result has 65 places, 80 transitions, 586 flow [2023-08-27 00:53:13,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=586, PETRI_PLACES=65, PETRI_TRANSITIONS=80} [2023-08-27 00:53:13,231 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-08-27 00:53:13,231 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 80 transitions, 586 flow [2023-08-27 00:53:13,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.57142857142857) internal successors, (893), 7 states have internal predecessors, (893), 0 states have call successors, (0), 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 00:53:13,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:53:13,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:53:13,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 00:53:13,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:13,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:53:13,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:53:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash -552522556, now seen corresponding path program 1 times [2023-08-27 00:53:13,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:53:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757014369] [2023-08-27 00:53:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:53:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:13,497 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 00:53:13,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:53:13,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757014369] [2023-08-27 00:53:13,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757014369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:53:13,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:53:13,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:53:13,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876619715] [2023-08-27 00:53:13,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:53:13,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:53:13,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:53:13,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:53:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:53:13,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 276 [2023-08-27 00:53:13,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 80 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 00:53:13,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:53:13,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 276 [2023-08-27 00:53:13,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:53:19,854 INFO L124 PetriNetUnfolderBase]: 91989/112043 cut-off events. [2023-08-27 00:53:19,854 INFO L125 PetriNetUnfolderBase]: For 140164/140164 co-relation queries the response was YES. [2023-08-27 00:53:20,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340869 conditions, 112043 events. 91989/112043 cut-off events. For 140164/140164 co-relation queries the response was YES. Maximal size of possible extension queue 6042. Compared 591906 event pairs, 16988 based on Foata normal form. 0/55671 useless extension candidates. Maximal degree in co-relation 164732. Up to 100116 conditions per place. [2023-08-27 00:53:20,485 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 107 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-27 00:53:20,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 115 transitions, 988 flow [2023-08-27 00:53:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:53:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:53:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-27 00:53:20,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205314009661836 [2023-08-27 00:53:20,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-27 00:53:20,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-27 00:53:20,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:53:20,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-27 00:53:20,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 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 00:53:20,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:53:20,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:53:20,489 INFO L175 Difference]: Start difference. First operand has 65 places, 80 transitions, 586 flow. Second operand 3 states and 431 transitions. [2023-08-27 00:53:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 115 transitions, 988 flow [2023-08-27 00:53:28,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 940 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-08-27 00:53:28,031 INFO L231 Difference]: Finished difference. Result has 68 places, 84 transitions, 615 flow [2023-08-27 00:53:28,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=615, PETRI_PLACES=68, PETRI_TRANSITIONS=84} [2023-08-27 00:53:28,032 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2023-08-27 00:53:28,032 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 84 transitions, 615 flow [2023-08-27 00:53:28,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 00:53:28,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:53:28,032 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 00:53:28,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:53:28,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:53:28,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:53:28,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1180927405, now seen corresponding path program 2 times [2023-08-27 00:53:28,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:53:28,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133697975] [2023-08-27 00:53:28,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:28,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:53:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:28,105 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 00:53:28,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:53:28,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133697975] [2023-08-27 00:53:28,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133697975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:53:28,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287035296] [2023-08-27 00:53:28,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:53:28,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:28,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:53:28,109 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 00:53:28,111 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 00:53:28,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:53:28,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:53:28,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:53:28,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:53:28,187 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 00:53:28,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:53:28,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287035296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:53:28,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:53:28,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 00:53:28,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630429279] [2023-08-27 00:53:28,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:53:28,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:53:28,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:53:28,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:53:28,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:53:28,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 276 [2023-08-27 00:53:28,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 84 transitions, 615 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 00:53:28,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:53:28,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 276 [2023-08-27 00:53:28,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:53:32,347 INFO L124 PetriNetUnfolderBase]: 59879/73076 cut-off events. [2023-08-27 00:53:32,347 INFO L125 PetriNetUnfolderBase]: For 125810/128042 co-relation queries the response was YES. [2023-08-27 00:53:32,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228157 conditions, 73076 events. 59879/73076 cut-off events. For 125810/128042 co-relation queries the response was YES. Maximal size of possible extension queue 4158. Compared 374167 event pairs, 29340 based on Foata normal form. 4875/41970 useless extension candidates. Maximal degree in co-relation 125266. Up to 72882 conditions per place. [2023-08-27 00:53:32,793 INFO L140 encePairwiseOnDemand]: 273/276 looper letters, 71 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-08-27 00:53:32,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 676 flow [2023-08-27 00:53:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:53:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:53:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-08-27 00:53:32,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867149758454106 [2023-08-27 00:53:32,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-08-27 00:53:32,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-08-27 00:53:32,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:53:32,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-08-27 00:53:32,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 00:53:32,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:53:32,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:53:32,798 INFO L175 Difference]: Start difference. First operand has 68 places, 84 transitions, 615 flow. Second operand 3 states and 403 transitions. [2023-08-27 00:53:32,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 676 flow [2023-08-27 00:53:35,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 650 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:53:35,006 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 508 flow [2023-08-27 00:53:35,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-08-27 00:53:35,007 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-08-27 00:53:35,007 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 508 flow [2023-08-27 00:53:35,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 00:53:35,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:53:35,007 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 00:53:35,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 00:53:35,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:35,213 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:53:35,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:53:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1180927478, now seen corresponding path program 2 times [2023-08-27 00:53:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:53:35,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805736072] [2023-08-27 00:53:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:35,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:53:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:35,290 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 00:53:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:53:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805736072] [2023-08-27 00:53:35,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805736072] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:53:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594714528] [2023-08-27 00:53:35,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:53:35,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:35,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:53:35,292 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 00:53:35,294 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 00:53:35,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:53:35,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:53:35,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:53:35,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:53:35,378 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 00:53:35,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:53:35,429 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 00:53:35,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594714528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:53:35,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:53:35,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 00:53:35,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378707490] [2023-08-27 00:53:35,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:53:35,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:53:35,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:53:35,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:53:35,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:53:35,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 276 [2023-08-27 00:53:35,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 508 flow. Second operand has 13 states, 13 states have (on average 127.3076923076923) internal successors, (1655), 13 states have internal predecessors, (1655), 0 states have call successors, (0), 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 00:53:35,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:53:35,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 276 [2023-08-27 00:53:35,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:53:47,639 INFO L124 PetriNetUnfolderBase]: 170313/208245 cut-off events. [2023-08-27 00:53:47,639 INFO L125 PetriNetUnfolderBase]: For 308892/314170 co-relation queries the response was YES. [2023-08-27 00:53:48,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609929 conditions, 208245 events. 170313/208245 cut-off events. For 308892/314170 co-relation queries the response was YES. Maximal size of possible extension queue 9065. Compared 1164938 event pairs, 13027 based on Foata normal form. 17849/118972 useless extension candidates. Maximal degree in co-relation 609911. Up to 39067 conditions per place. [2023-08-27 00:53:48,962 INFO L140 encePairwiseOnDemand]: 269/276 looper letters, 339 selfloop transitions, 106 changer transitions 0/449 dead transitions. [2023-08-27 00:53:48,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 449 transitions, 3031 flow [2023-08-27 00:53:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:53:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:53:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1877 transitions. [2023-08-27 00:53:48,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5667270531400966 [2023-08-27 00:53:48,968 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1877 transitions. [2023-08-27 00:53:48,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1877 transitions. [2023-08-27 00:53:48,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:53:48,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1877 transitions. [2023-08-27 00:53:48,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 156.41666666666666) internal successors, (1877), 12 states have internal predecessors, (1877), 0 states have call successors, (0), 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 00:53:48,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 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 00:53:48,977 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 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 00:53:48,977 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 508 flow. Second operand 12 states and 1877 transitions. [2023-08-27 00:53:48,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 449 transitions, 3031 flow [2023-08-27 00:53:58,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 449 transitions, 3030 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:53:58,359 INFO L231 Difference]: Finished difference. Result has 84 places, 163 transitions, 1933 flow [2023-08-27 00:53:58,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1933, PETRI_PLACES=84, PETRI_TRANSITIONS=163} [2023-08-27 00:53:58,360 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2023-08-27 00:53:58,360 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 163 transitions, 1933 flow [2023-08-27 00:53:58,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 127.3076923076923) internal successors, (1655), 13 states have internal predecessors, (1655), 0 states have call successors, (0), 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 00:53:58,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:53:58,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:53:58,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 00:53:58,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:58,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:53:58,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:53:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash -547486176, now seen corresponding path program 1 times [2023-08-27 00:53:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:53:58,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001925289] [2023-08-27 00:53:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:53:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:58,606 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 00:53:58,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:53:58,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001925289] [2023-08-27 00:53:58,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001925289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:53:58,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:53:58,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:53:58,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417110873] [2023-08-27 00:53:58,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:53:58,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:53:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:53:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:53:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:53:58,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 276 [2023-08-27 00:53:58,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 163 transitions, 1933 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 00:53:58,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:53:58,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 276 [2023-08-27 00:53:58,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:54:11,594 INFO L124 PetriNetUnfolderBase]: 139801/176748 cut-off events. [2023-08-27 00:54:11,595 INFO L125 PetriNetUnfolderBase]: For 718082/723202 co-relation queries the response was YES. [2023-08-27 00:54:12,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627897 conditions, 176748 events. 139801/176748 cut-off events. For 718082/723202 co-relation queries the response was YES. Maximal size of possible extension queue 8123. Compared 1036024 event pairs, 20649 based on Foata normal form. 5113/101468 useless extension candidates. Maximal degree in co-relation 627868. Up to 157589 conditions per place. [2023-08-27 00:54:13,104 INFO L140 encePairwiseOnDemand]: 267/276 looper letters, 303 selfloop transitions, 3 changer transitions 0/310 dead transitions. [2023-08-27 00:54:13,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 310 transitions, 4429 flow [2023-08-27 00:54:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:54:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:54:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-27 00:54:13,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533816425120773 [2023-08-27 00:54:13,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-27 00:54:13,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-27 00:54:13,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:54:13,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-27 00:54:13,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 00:54:13,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:54:13,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:54:13,109 INFO L175 Difference]: Start difference. First operand has 84 places, 163 transitions, 1933 flow. Second operand 3 states and 442 transitions. [2023-08-27 00:54:13,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 310 transitions, 4429 flow [2023-08-27 00:54:17,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 310 transitions, 3937 flow, removed 246 selfloop flow, removed 0 redundant places. [2023-08-27 00:54:17,101 INFO L231 Difference]: Finished difference. Result has 87 places, 165 transitions, 1716 flow [2023-08-27 00:54:17,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1716, PETRI_PLACES=87, PETRI_TRANSITIONS=165} [2023-08-27 00:54:17,102 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2023-08-27 00:54:17,102 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 165 transitions, 1716 flow [2023-08-27 00:54:17,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 00:54:17,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:54:17,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:54:17,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 00:54:17,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:54:17,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:54:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash -547486132, now seen corresponding path program 1 times [2023-08-27 00:54:17,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:54:17,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428894157] [2023-08-27 00:54:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:54:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:54:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:54:17,134 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 00:54:17,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:54:17,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428894157] [2023-08-27 00:54:17,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428894157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:54:17,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:54:17,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:54:17,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132510521] [2023-08-27 00:54:17,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:54:17,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:54:17,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:54:17,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:54:17,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:54:17,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 276 [2023-08-27 00:54:17,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 165 transitions, 1716 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 00:54:17,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:54:17,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 276 [2023-08-27 00:54:17,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:54:31,297 INFO L124 PetriNetUnfolderBase]: 144197/183584 cut-off events. [2023-08-27 00:54:31,297 INFO L125 PetriNetUnfolderBase]: For 433990/439961 co-relation queries the response was YES. [2023-08-27 00:54:32,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687079 conditions, 183584 events. 144197/183584 cut-off events. For 433990/439961 co-relation queries the response was YES. Maximal size of possible extension queue 8234. Compared 1148981 event pairs, 82615 based on Foata normal form. 5439/127984 useless extension candidates. Maximal degree in co-relation 687047. Up to 173849 conditions per place. [2023-08-27 00:54:33,079 INFO L140 encePairwiseOnDemand]: 272/276 looper letters, 299 selfloop transitions, 3 changer transitions 0/305 dead transitions. [2023-08-27 00:54:33,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 305 transitions, 3939 flow [2023-08-27 00:54:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:54:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:54:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-08-27 00:54:33,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084541062801933 [2023-08-27 00:54:33,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-08-27 00:54:33,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-08-27 00:54:33,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:54:33,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-08-27 00:54:33,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 00:54:33,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:54:33,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 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 00:54:33,084 INFO L175 Difference]: Start difference. First operand has 87 places, 165 transitions, 1716 flow. Second operand 3 states and 421 transitions. [2023-08-27 00:54:33,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 305 transitions, 3939 flow [2023-08-27 00:54:48,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 305 transitions, 3917 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-27 00:54:48,984 INFO L231 Difference]: Finished difference. Result has 89 places, 165 transitions, 1712 flow [2023-08-27 00:54:48,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1712, PETRI_PLACES=89, PETRI_TRANSITIONS=165} [2023-08-27 00:54:48,984 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2023-08-27 00:54:48,984 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 165 transitions, 1712 flow [2023-08-27 00:54:48,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 00:54:48,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:54:48,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:54:48,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:54:48,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:54:48,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:54:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash 207800408, now seen corresponding path program 1 times [2023-08-27 00:54:48,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:54:48,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818028400] [2023-08-27 00:54:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:54:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:54:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:54:49,021 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 00:54:49,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:54:49,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818028400] [2023-08-27 00:54:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818028400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:54:49,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886313008] [2023-08-27 00:54:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:54:49,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:54:49,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:54:49,023 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 00:54:49,026 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 00:54:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:54:49,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:54:49,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:54:49,129 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 00:54:49,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:54:49,147 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 00:54:49,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886313008] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:54:49,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:54:49,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:54:49,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424899789] [2023-08-27 00:54:49,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:54:49,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:54:49,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:54:49,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:54:49,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:54:49,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 276 [2023-08-27 00:54:49,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 165 transitions, 1712 flow. Second operand has 7 states, 7 states have (on average 129.28571428571428) internal successors, (905), 7 states have internal predecessors, (905), 0 states have call successors, (0), 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 00:54:49,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:54:49,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 276 [2023-08-27 00:54:49,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand