/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/chl-array-int-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:23:10,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:23:10,563 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 [2023-08-26 23:23:10,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:23:10,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:23:10,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:23:10,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:23:10,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:23:10,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:23:10,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:23:10,601 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:23:10,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:23:10,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:23:10,602 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:23:10,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:23:10,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:23:10,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:23:10,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:23:10,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:23:10,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:23:10,604 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:23:10,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:23:10,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:23:10,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:23:10,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:23:10,606 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:23:10,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:23:10,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:23:10,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:23:10,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:23:10,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:23:10,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:23:10,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:23:10,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:23:10,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:23:10,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:23:10,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:23:10,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:23:10,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:23:10,953 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:23:10,953 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:23:10,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-26 23:23:12,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:23:12,342 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:23:12,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-26 23:23:12,349 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37a0d38a/aeba99d2095a4f72a017b51eb0c71e21/FLAGcbd573cad [2023-08-26 23:23:12,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37a0d38a/aeba99d2095a4f72a017b51eb0c71e21 [2023-08-26 23:23:12,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:23:12,362 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:23:12,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:23:12,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:23:12,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:23:12,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243624f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12, skipping insertion in model container [2023-08-26 23:23:12,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,387 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:23:12,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:23:12,585 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:23:12,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:23:12,631 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:23:12,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12 WrapperNode [2023-08-26 23:23:12,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:23:12,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:23:12,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:23:12,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:23:12,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,700 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 352 [2023-08-26 23:23:12,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:23:12,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:23:12,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:23:12,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:23:12,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:23:12,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:23:12,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:23:12,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:23:12,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (1/1) ... [2023-08-26 23:23:12,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:23:12,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:23:12,814 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) [2023-08-26 23:23:12,840 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 [2023-08-26 23:23:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:23:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:23:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:23:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 23:23:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 23:23:12,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 23:23:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 23:23:12,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 23:23:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 23:23:12,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 23:23:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:23:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 23:23:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:23:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:23:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:23:12,858 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 23:23:12,998 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:23:13,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:23:13,450 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:23:13,462 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:23:13,462 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-26 23:23:13,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:23:13 BoogieIcfgContainer [2023-08-26 23:23:13,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:23:13,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:23:13,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:23:13,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:23:13,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:23:12" (1/3) ... [2023-08-26 23:23:13,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e390d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:23:13, skipping insertion in model container [2023-08-26 23:23:13,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:23:12" (2/3) ... [2023-08-26 23:23:13,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e390d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:23:13, skipping insertion in model container [2023-08-26 23:23:13,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:23:13" (3/3) ... [2023-08-26 23:23:13,476 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-08-26 23:23:13,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:23:13,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2023-08-26 23:23:13,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:23:13,622 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 23:23:13,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 430 transitions, 884 flow [2023-08-26 23:23:13,802 INFO L124 PetriNetUnfolderBase]: 35/427 cut-off events. [2023-08-26 23:23:13,803 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:23:13,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 427 events. 35/427 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1006 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 320. Up to 3 conditions per place. [2023-08-26 23:23:13,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 405 places, 430 transitions, 884 flow [2023-08-26 23:23:13,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 391 places, 416 transitions, 850 flow [2023-08-26 23:23:13,834 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:23:13,842 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 416 transitions, 850 flow [2023-08-26 23:23:13,844 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 416 transitions, 850 flow [2023-08-26 23:23:13,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 416 transitions, 850 flow [2023-08-26 23:23:13,945 INFO L124 PetriNetUnfolderBase]: 35/416 cut-off events. [2023-08-26 23:23:13,945 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:23:13,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 416 events. 35/416 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1002 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 320. Up to 3 conditions per place. [2023-08-26 23:23:13,985 INFO L119 LiptonReduction]: Number of co-enabled transitions 38184 [2023-08-26 23:23:30,614 INFO L134 LiptonReduction]: Checked pairs total: 50865 [2023-08-26 23:23:30,614 INFO L136 LiptonReduction]: Total number of compositions: 526 [2023-08-26 23:23:30,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:23:30,634 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;@43945c8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:23:30,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2023-08-26 23:23:30,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:23:30,636 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 23:23:30,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:23:30,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:30,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 23:23:30,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:30,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:30,641 INFO L85 PathProgramCache]: Analyzing trace with hash 57205, now seen corresponding path program 1 times [2023-08-26 23:23:30,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:30,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255016821] [2023-08-26 23:23:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:30,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:30,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:30,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255016821] [2023-08-26 23:23:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255016821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:23:30,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:23:30,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:23:30,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870816117] [2023-08-26 23:23:30,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:23:30,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:23:30,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:23:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:23:30,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 956 [2023-08-26 23:23:30,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 379.6666666666667) internal successors, (1139), 3 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:30,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:30,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 956 [2023-08-26 23:23:30,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:33,015 INFO L124 PetriNetUnfolderBase]: 12933/18010 cut-off events. [2023-08-26 23:23:33,016 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2023-08-26 23:23:33,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36613 conditions, 18010 events. 12933/18010 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 97894 event pairs, 11113 based on Foata normal form. 0/7240 useless extension candidates. Maximal degree in co-relation 34416. Up to 18006 conditions per place. [2023-08-26 23:23:33,135 INFO L140 encePairwiseOnDemand]: 937/956 looper letters, 65 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2023-08-26 23:23:33,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 306 flow [2023-08-26 23:23:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:23:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:23:33,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1221 transitions. [2023-08-26 23:23:33,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42573221757322177 [2023-08-26 23:23:33,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1221 transitions. [2023-08-26 23:23:33,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1221 transitions. [2023-08-26 23:23:33,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:33,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1221 transitions. [2023-08-26 23:23:33,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:33,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:33,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:33,177 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 162 flow. Second operand 3 states and 1221 transitions. [2023-08-26 23:23:33,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 306 flow [2023-08-26 23:23:33,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 23:23:33,203 INFO L231 Difference]: Finished difference. Result has 66 places, 72 transitions, 202 flow [2023-08-26 23:23:33,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=66, PETRI_TRANSITIONS=72} [2023-08-26 23:23:33,208 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-08-26 23:23:33,209 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 72 transitions, 202 flow [2023-08-26 23:23:33,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.6666666666667) internal successors, (1139), 3 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:33,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:33,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:23:33,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:23:33,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:33,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:33,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1776403, now seen corresponding path program 1 times [2023-08-26 23:23:33,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:33,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968157889] [2023-08-26 23:23:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:33,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:33,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968157889] [2023-08-26 23:23:33,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968157889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:23:33,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322869370] [2023-08-26 23:23:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:33,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:33,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:23:33,301 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) [2023-08-26 23:23:33,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 23:23:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:33,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:23:33,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:23:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:33,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:23:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322869370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:23:33,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:23:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 23:23:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053823494] [2023-08-26 23:23:33,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:23:33,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:23:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:23:33,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:23:33,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 956 [2023-08-26 23:23:33,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 380.14285714285717) internal successors, (2661), 7 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:33,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:33,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 956 [2023-08-26 23:23:33,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:35,419 INFO L124 PetriNetUnfolderBase]: 12951/18037 cut-off events. [2023-08-26 23:23:35,419 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-08-26 23:23:35,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36348 conditions, 18037 events. 12951/18037 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 97718 event pairs, 11113 based on Foata normal form. 0/7259 useless extension candidates. Maximal degree in co-relation 36193. Up to 18006 conditions per place. [2023-08-26 23:23:35,515 INFO L140 encePairwiseOnDemand]: 943/956 looper letters, 62 selfloop transitions, 37 changer transitions 0/99 dead transitions. [2023-08-26 23:23:35,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 99 transitions, 520 flow [2023-08-26 23:23:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:23:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:23:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2761 transitions. [2023-08-26 23:23:35,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125821876867902 [2023-08-26 23:23:35,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2761 transitions. [2023-08-26 23:23:35,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2761 transitions. [2023-08-26 23:23:35,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:35,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2761 transitions. [2023-08-26 23:23:35,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 394.42857142857144) internal successors, (2761), 7 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:35,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 956.0) internal successors, (7648), 8 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:35,548 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 956.0) internal successors, (7648), 8 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:35,548 INFO L175 Difference]: Start difference. First operand has 66 places, 72 transitions, 202 flow. Second operand 7 states and 2761 transitions. [2023-08-26 23:23:35,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 99 transitions, 520 flow [2023-08-26 23:23:35,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 99 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:23:35,551 INFO L231 Difference]: Finished difference. Result has 73 places, 99 transitions, 432 flow [2023-08-26 23:23:35,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=73, PETRI_TRANSITIONS=99} [2023-08-26 23:23:35,552 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -1 predicate places. [2023-08-26 23:23:35,552 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 99 transitions, 432 flow [2023-08-26 23:23:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 380.14285714285717) internal successors, (2661), 7 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:35,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:35,555 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-26 23:23:35,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 23:23:35,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:35,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:35,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:35,762 INFO L85 PathProgramCache]: Analyzing trace with hash 55071540, now seen corresponding path program 1 times [2023-08-26 23:23:35,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:35,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651323620] [2023-08-26 23:23:35,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:35,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:35,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651323620] [2023-08-26 23:23:35,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651323620] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:23:35,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904984150] [2023-08-26 23:23:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:35,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:35,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:23:35,848 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) [2023-08-26 23:23:35,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 23:23:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:35,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:23:35,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:23:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:35,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:23:35,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904984150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:23:35,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:23:35,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-26 23:23:35,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195102588] [2023-08-26 23:23:35,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:23:35,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:23:35,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:35,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:23:35,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:23:35,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 956 [2023-08-26 23:23:35,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 99 transitions, 432 flow. Second operand has 5 states, 5 states have (on average 379.8) internal successors, (1899), 5 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:35,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:35,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 956 [2023-08-26 23:23:35,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:37,626 INFO L124 PetriNetUnfolderBase]: 12942/18025 cut-off events. [2023-08-26 23:23:37,627 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-08-26 23:23:37,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36358 conditions, 18025 events. 12942/18025 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 97719 event pairs, 11113 based on Foata normal form. 0/7261 useless extension candidates. Maximal degree in co-relation 36264. Up to 17997 conditions per place. [2023-08-26 23:23:37,723 INFO L140 encePairwiseOnDemand]: 946/956 looper letters, 67 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2023-08-26 23:23:37,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 525 flow [2023-08-26 23:23:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:23:37,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:23:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1976 transitions. [2023-08-26 23:23:37,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41338912133891215 [2023-08-26 23:23:37,730 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1976 transitions. [2023-08-26 23:23:37,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1976 transitions. [2023-08-26 23:23:37,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:37,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1976 transitions. [2023-08-26 23:23:37,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 395.2) internal successors, (1976), 5 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:37,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 956.0) internal successors, (5736), 6 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:37,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 956.0) internal successors, (5736), 6 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:37,746 INFO L175 Difference]: Start difference. First operand has 73 places, 99 transitions, 432 flow. Second operand 5 states and 1976 transitions. [2023-08-26 23:23:37,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 525 flow [2023-08-26 23:23:37,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 488 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 23:23:37,749 INFO L231 Difference]: Finished difference. Result has 72 places, 87 transitions, 354 flow [2023-08-26 23:23:37,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=72, PETRI_TRANSITIONS=87} [2023-08-26 23:23:37,750 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-26 23:23:37,750 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 87 transitions, 354 flow [2023-08-26 23:23:37,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 379.8) internal successors, (1899), 5 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:37,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:37,751 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-26 23:23:37,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 23:23:37,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-26 23:23:37,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:37,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1384240885, now seen corresponding path program 2 times [2023-08-26 23:23:37,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:37,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109175970] [2023-08-26 23:23:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:37,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109175970] [2023-08-26 23:23:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109175970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:23:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835295258] [2023-08-26 23:23:38,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:23:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:38,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:23:38,068 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) [2023-08-26 23:23:38,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 23:23:38,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:23:38,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:23:38,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 23:23:38,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:23:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:23:38,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:23:38,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835295258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:23:38,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:23:38,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-26 23:23:38,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689748451] [2023-08-26 23:23:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:23:38,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:23:38,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:38,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:23:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:23:38,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 956 [2023-08-26 23:23:38,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 87 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 383.0) internal successors, (1149), 3 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:38,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:38,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 956 [2023-08-26 23:23:38,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:39,825 INFO L124 PetriNetUnfolderBase]: 12942/18024 cut-off events. [2023-08-26 23:23:39,825 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-08-26 23:23:39,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36352 conditions, 18024 events. 12942/18024 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 97949 event pairs, 11113 based on Foata normal form. 1/7267 useless extension candidates. Maximal degree in co-relation 36268. Up to 18019 conditions per place. [2023-08-26 23:23:40,032 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 80 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2023-08-26 23:23:40,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 516 flow [2023-08-26 23:23:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:23:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:23:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1209 transitions. [2023-08-26 23:23:40,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215481171548117 [2023-08-26 23:23:40,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1209 transitions. [2023-08-26 23:23:40,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1209 transitions. [2023-08-26 23:23:40,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:40,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1209 transitions. [2023-08-26 23:23:40,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:40,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:40,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:40,047 INFO L175 Difference]: Start difference. First operand has 72 places, 87 transitions, 354 flow. Second operand 3 states and 1209 transitions. [2023-08-26 23:23:40,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 516 flow [2023-08-26 23:23:40,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 488 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 23:23:40,051 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 328 flow [2023-08-26 23:23:40,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2023-08-26 23:23:40,052 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-08-26 23:23:40,052 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 328 flow [2023-08-26 23:23:40,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 383.0) internal successors, (1149), 3 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:40,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:40,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 23:23:40,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-26 23:23:40,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:40,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:40,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:40,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1436059712, now seen corresponding path program 1 times [2023-08-26 23:23:40,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:40,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454812553] [2023-08-26 23:23:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:40,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454812553] [2023-08-26 23:23:40,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454812553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:23:40,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:23:40,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:23:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499174325] [2023-08-26 23:23:40,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:23:40,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:23:40,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:40,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:23:40,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:23:40,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-26 23:23:40,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 341.2) internal successors, (1706), 5 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:40,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:40,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-26 23:23:40,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:42,980 INFO L124 PetriNetUnfolderBase]: 24512/33995 cut-off events. [2023-08-26 23:23:42,980 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2023-08-26 23:23:43,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68512 conditions, 33995 events. 24512/33995 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 1478. Compared 199482 event pairs, 20674 based on Foata normal form. 0/13801 useless extension candidates. Maximal degree in co-relation 68381. Up to 17155 conditions per place. [2023-08-26 23:23:43,152 INFO L140 encePairwiseOnDemand]: 950/956 looper letters, 151 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2023-08-26 23:23:43,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 160 transitions, 897 flow [2023-08-26 23:23:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:23:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:23:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1823 transitions. [2023-08-26 23:23:43,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813807531380753 [2023-08-26 23:23:43,157 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1823 transitions. [2023-08-26 23:23:43,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1823 transitions. [2023-08-26 23:23:43,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:43,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1823 transitions. [2023-08-26 23:23:43,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 364.6) internal successors, (1823), 5 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:43,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 956.0) internal successors, (5736), 6 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:43,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 956.0) internal successors, (5736), 6 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:43,172 INFO L175 Difference]: Start difference. First operand has 70 places, 86 transitions, 328 flow. Second operand 5 states and 1823 transitions. [2023-08-26 23:23:43,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 160 transitions, 897 flow [2023-08-26 23:23:43,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 160 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:23:43,176 INFO L231 Difference]: Finished difference. Result has 75 places, 92 transitions, 395 flow [2023-08-26 23:23:43,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=75, PETRI_TRANSITIONS=92} [2023-08-26 23:23:43,177 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2023-08-26 23:23:43,177 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 92 transitions, 395 flow [2023-08-26 23:23:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 341.2) internal successors, (1706), 5 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:43,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:43,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:23:43,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 23:23:43,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:43,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash 13616277, now seen corresponding path program 1 times [2023-08-26 23:23:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683341728] [2023-08-26 23:23:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:43,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:43,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683341728] [2023-08-26 23:23:43,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683341728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:23:43,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298262257] [2023-08-26 23:23:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:43,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:23:43,325 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) [2023-08-26 23:23:43,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 23:23:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:43,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 23:23:43,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:23:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:43,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:23:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:43,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298262257] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 23:23:43,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 23:23:43,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2023-08-26 23:23:43,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932892220] [2023-08-26 23:23:43,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:23:43,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:23:43,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:23:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-26 23:23:43,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-26 23:23:43,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 92 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:43,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:43,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-26 23:23:43,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:45,710 INFO L124 PetriNetUnfolderBase]: 23322/32467 cut-off events. [2023-08-26 23:23:45,710 INFO L125 PetriNetUnfolderBase]: For 2015/2015 co-relation queries the response was YES. [2023-08-26 23:23:45,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65794 conditions, 32467 events. 23322/32467 cut-off events. For 2015/2015 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 190412 event pairs, 19898 based on Foata normal form. 676/14455 useless extension candidates. Maximal degree in co-relation 65657. Up to 32467 conditions per place. [2023-08-26 23:23:45,885 INFO L140 encePairwiseOnDemand]: 954/956 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-26 23:23:45,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 565 flow [2023-08-26 23:23:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:23:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:23:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2023-08-26 23:23:45,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3772663877266388 [2023-08-26 23:23:45,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2023-08-26 23:23:45,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2023-08-26 23:23:45,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:45,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2023-08-26 23:23:45,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:45,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:45,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:45,895 INFO L175 Difference]: Start difference. First operand has 75 places, 92 transitions, 395 flow. Second operand 3 states and 1082 transitions. [2023-08-26 23:23:45,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 565 flow [2023-08-26 23:23:45,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 557 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 23:23:45,899 INFO L231 Difference]: Finished difference. Result has 74 places, 90 transitions, 379 flow [2023-08-26 23:23:45,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=74, PETRI_TRANSITIONS=90} [2023-08-26 23:23:45,900 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-08-26 23:23:45,900 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 90 transitions, 379 flow [2023-08-26 23:23:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:45,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:45,901 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-26 23:23:45,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 23:23:46,112 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 [2023-08-26 23:23:46,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:46,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:46,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1495365757, now seen corresponding path program 1 times [2023-08-26 23:23:46,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:46,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171339057] [2023-08-26 23:23:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:46,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:46,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171339057] [2023-08-26 23:23:46,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171339057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:23:46,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024614908] [2023-08-26 23:23:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:46,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:46,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:23:46,213 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) [2023-08-26 23:23:46,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 23:23:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:46,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 23:23:46,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:23:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:46,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:23:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:46,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024614908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:23:46,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:23:46,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 23:23:46,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414367860] [2023-08-26 23:23:46,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:23:46,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 23:23:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:46,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 23:23:46,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 23:23:46,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 956 [2023-08-26 23:23:46,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 90 transitions, 379 flow. Second operand has 13 states, 13 states have (on average 380.15384615384613) internal successors, (4942), 13 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:46,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:46,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 956 [2023-08-26 23:23:46,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:48,609 INFO L124 PetriNetUnfolderBase]: 23352/32527 cut-off events. [2023-08-26 23:23:48,609 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2023-08-26 23:23:48,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66031 conditions, 32527 events. 23352/32527 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 191794 event pairs, 19898 based on Foata normal form. 24/13863 useless extension candidates. Maximal degree in co-relation 66016. Up to 32449 conditions per place. [2023-08-26 23:23:48,784 INFO L140 encePairwiseOnDemand]: 947/956 looper letters, 61 selfloop transitions, 71 changer transitions 0/132 dead transitions. [2023-08-26 23:23:48,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 937 flow [2023-08-26 23:23:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 23:23:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 23:23:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4681 transitions. [2023-08-26 23:23:48,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40803695955369595 [2023-08-26 23:23:48,794 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4681 transitions. [2023-08-26 23:23:48,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4681 transitions. [2023-08-26 23:23:48,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:48,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4681 transitions. [2023-08-26 23:23:48,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 390.0833333333333) internal successors, (4681), 12 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:48,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 956.0) internal successors, (12428), 13 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:48,820 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 956.0) internal successors, (12428), 13 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:48,820 INFO L175 Difference]: Start difference. First operand has 74 places, 90 transitions, 379 flow. Second operand 12 states and 4681 transitions. [2023-08-26 23:23:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 937 flow [2023-08-26 23:23:48,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 936 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:23:48,826 INFO L231 Difference]: Finished difference. Result has 90 places, 132 transitions, 906 flow [2023-08-26 23:23:48,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=906, PETRI_PLACES=90, PETRI_TRANSITIONS=132} [2023-08-26 23:23:48,827 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-08-26 23:23:48,827 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 132 transitions, 906 flow [2023-08-26 23:23:48,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 380.15384615384613) internal successors, (4942), 13 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:48,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:48,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:23:48,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 23:23:49,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:49,038 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:49,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:49,038 INFO L85 PathProgramCache]: Analyzing trace with hash 13616350, now seen corresponding path program 1 times [2023-08-26 23:23:49,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:49,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458823347] [2023-08-26 23:23:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:49,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458823347] [2023-08-26 23:23:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458823347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:23:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922440052] [2023-08-26 23:23:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:49,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:23:49,139 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) [2023-08-26 23:23:49,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 23:23:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:49,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:23:49,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:23:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:23:49,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:23:49,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922440052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:23:49,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:23:49,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-26 23:23:49,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835327949] [2023-08-26 23:23:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:23:49,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:23:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:23:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:23:49,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 956 [2023-08-26 23:23:49,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 132 transitions, 906 flow. Second operand has 4 states, 4 states have (on average 377.75) internal successors, (1511), 4 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:49,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:49,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 956 [2023-08-26 23:23:49,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:51,593 INFO L124 PetriNetUnfolderBase]: 22500/31337 cut-off events. [2023-08-26 23:23:51,593 INFO L125 PetriNetUnfolderBase]: For 802/802 co-relation queries the response was YES. [2023-08-26 23:23:51,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63496 conditions, 31337 events. 22500/31337 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 183978 event pairs, 19122 based on Foata normal form. 338/13479 useless extension candidates. Maximal degree in co-relation 63474. Up to 31325 conditions per place. [2023-08-26 23:23:51,779 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 119 selfloop transitions, 12 changer transitions 0/131 dead transitions. [2023-08-26 23:23:51,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1164 flow [2023-08-26 23:23:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:23:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:23:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1565 transitions. [2023-08-26 23:23:51,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40925732217573224 [2023-08-26 23:23:51,782 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1565 transitions. [2023-08-26 23:23:51,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1565 transitions. [2023-08-26 23:23:51,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:51,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1565 transitions. [2023-08-26 23:23:51,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 391.25) internal successors, (1565), 4 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:51,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 956.0) internal successors, (4780), 5 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:51,791 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 956.0) internal successors, (4780), 5 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:51,791 INFO L175 Difference]: Start difference. First operand has 90 places, 132 transitions, 906 flow. Second operand 4 states and 1565 transitions. [2023-08-26 23:23:51,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1164 flow [2023-08-26 23:23:51,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 955 flow, removed 52 selfloop flow, removed 6 redundant places. [2023-08-26 23:23:51,801 INFO L231 Difference]: Finished difference. Result has 86 places, 131 transitions, 717 flow [2023-08-26 23:23:51,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=717, PETRI_PLACES=86, PETRI_TRANSITIONS=131} [2023-08-26 23:23:51,804 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2023-08-26 23:23:51,804 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 131 transitions, 717 flow [2023-08-26 23:23:51,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 377.75) internal successors, (1511), 4 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:51,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:51,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:23:51,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 23:23:52,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:23:52,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:52,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:52,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1369028772, now seen corresponding path program 1 times [2023-08-26 23:23:52,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:52,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437762124] [2023-08-26 23:23:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:52,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:52,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:52,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437762124] [2023-08-26 23:23:52,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437762124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:23:52,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:23:52,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:23:52,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907558222] [2023-08-26 23:23:52,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:23:52,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:23:52,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:52,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:23:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:23:52,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 956 [2023-08-26 23:23:52,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 131 transitions, 717 flow. Second operand has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:52,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:52,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 956 [2023-08-26 23:23:52,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:23:56,757 INFO L124 PetriNetUnfolderBase]: 39832/55417 cut-off events. [2023-08-26 23:23:56,757 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2023-08-26 23:23:56,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111787 conditions, 55417 events. 39832/55417 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 2236. Compared 360268 event pairs, 19122 based on Foata normal form. 0/23329 useless extension candidates. Maximal degree in co-relation 111766. Up to 31338 conditions per place. [2023-08-26 23:23:57,112 INFO L140 encePairwiseOnDemand]: 952/956 looper letters, 176 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2023-08-26 23:23:57,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 178 transitions, 1172 flow [2023-08-26 23:23:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:23:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:23:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1291 transitions. [2023-08-26 23:23:57,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450139470013947 [2023-08-26 23:23:57,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1291 transitions. [2023-08-26 23:23:57,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1291 transitions. [2023-08-26 23:23:57,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:23:57,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1291 transitions. [2023-08-26 23:23:57,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:57,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:57,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:57,120 INFO L175 Difference]: Start difference. First operand has 86 places, 131 transitions, 717 flow. Second operand 3 states and 1291 transitions. [2023-08-26 23:23:57,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 178 transitions, 1172 flow [2023-08-26 23:23:57,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 178 transitions, 1159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:23:57,126 INFO L231 Difference]: Finished difference. Result has 87 places, 132 transitions, 718 flow [2023-08-26 23:23:57,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=718, PETRI_PLACES=87, PETRI_TRANSITIONS=132} [2023-08-26 23:23:57,126 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2023-08-26 23:23:57,127 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 132 transitions, 718 flow [2023-08-26 23:23:57,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:57,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:23:57,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:23:57,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 23:23:57,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:23:57,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:23:57,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1368998826, now seen corresponding path program 1 times [2023-08-26 23:23:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:23:57,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800258179] [2023-08-26 23:23:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:23:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:23:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:23:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:23:57,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:23:57,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800258179] [2023-08-26 23:23:57,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800258179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:23:57,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:23:57,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:23:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272573922] [2023-08-26 23:23:57,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:23:57,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:23:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:23:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:23:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:23:57,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-26 23:23:57,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 132 transitions, 718 flow. Second operand has 5 states, 5 states have (on average 341.6) internal successors, (1708), 5 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:23:57,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:23:57,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-26 23:23:57,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:24:01,916 INFO L124 PetriNetUnfolderBase]: 38457/53494 cut-off events. [2023-08-26 23:24:01,917 INFO L125 PetriNetUnfolderBase]: For 4014/4014 co-relation queries the response was YES. [2023-08-26 23:24:02,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111832 conditions, 53494 events. 38457/53494 cut-off events. For 4014/4014 co-relation queries the response was YES. Maximal size of possible extension queue 2179. Compared 334870 event pairs, 31748 based on Foata normal form. 0/24008 useless extension candidates. Maximal degree in co-relation 111811. Up to 25796 conditions per place. [2023-08-26 23:24:02,245 INFO L140 encePairwiseOnDemand]: 950/956 looper letters, 233 selfloop transitions, 15 changer transitions 0/248 dead transitions. [2023-08-26 23:24:02,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 248 transitions, 1649 flow [2023-08-26 23:24:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:24:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:24:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2188 transitions. [2023-08-26 23:24:02,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38145048814504884 [2023-08-26 23:24:02,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2188 transitions. [2023-08-26 23:24:02,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2188 transitions. [2023-08-26 23:24:02,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:24:02,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2188 transitions. [2023-08-26 23:24:02,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 364.6666666666667) internal successors, (2188), 6 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:02,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 956.0) internal successors, (6692), 7 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:02,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 956.0) internal successors, (6692), 7 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:02,259 INFO L175 Difference]: Start difference. First operand has 87 places, 132 transitions, 718 flow. Second operand 6 states and 2188 transitions. [2023-08-26 23:24:02,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 248 transitions, 1649 flow [2023-08-26 23:24:02,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 248 transitions, 1643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:24:02,267 INFO L231 Difference]: Finished difference. Result has 93 places, 133 transitions, 766 flow [2023-08-26 23:24:02,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=93, PETRI_TRANSITIONS=133} [2023-08-26 23:24:02,268 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2023-08-26 23:24:02,268 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 133 transitions, 766 flow [2023-08-26 23:24:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 341.6) internal successors, (1708), 5 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:02,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:24:02,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:24:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 23:24:02,269 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:24:02,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:24:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1368998633, now seen corresponding path program 1 times [2023-08-26 23:24:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:24:02,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657126992] [2023-08-26 23:24:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:24:02,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:24:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:24:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:24:02,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:24:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657126992] [2023-08-26 23:24:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657126992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:24:02,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:24:02,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:24:02,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540493511] [2023-08-26 23:24:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:24:02,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:24:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:24:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:24:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:24:02,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-26 23:24:02,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 133 transitions, 766 flow. Second operand has 6 states, 6 states have (on average 341.3333333333333) internal successors, (2048), 6 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:02,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:24:02,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-26 23:24:02,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:24:11,155 INFO L124 PetriNetUnfolderBase]: 73281/101652 cut-off events. [2023-08-26 23:24:11,156 INFO L125 PetriNetUnfolderBase]: For 8261/8261 co-relation queries the response was YES. [2023-08-26 23:24:11,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213700 conditions, 101652 events. 73281/101652 cut-off events. For 8261/8261 co-relation queries the response was YES. Maximal size of possible extension queue 3983. Compared 681105 event pairs, 62239 based on Foata normal form. 1096/49170 useless extension candidates. Maximal degree in co-relation 213676. Up to 51535 conditions per place. [2023-08-26 23:24:11,874 INFO L140 encePairwiseOnDemand]: 949/956 looper letters, 147 selfloop transitions, 37 changer transitions 0/184 dead transitions. [2023-08-26 23:24:11,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 184 transitions, 1254 flow [2023-08-26 23:24:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:24:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:24:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2153 transitions. [2023-08-26 23:24:11,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3753486750348675 [2023-08-26 23:24:11,878 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2153 transitions. [2023-08-26 23:24:11,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2153 transitions. [2023-08-26 23:24:11,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:24:11,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2153 transitions. [2023-08-26 23:24:11,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 358.8333333333333) internal successors, (2153), 6 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:11,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 956.0) internal successors, (6692), 7 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:11,889 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 956.0) internal successors, (6692), 7 states have internal predecessors, (6692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:11,889 INFO L175 Difference]: Start difference. First operand has 93 places, 133 transitions, 766 flow. Second operand 6 states and 2153 transitions. [2023-08-26 23:24:11,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 184 transitions, 1254 flow [2023-08-26 23:24:11,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 184 transitions, 1239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:24:11,906 INFO L231 Difference]: Finished difference. Result has 98 places, 134 transitions, 872 flow [2023-08-26 23:24:11,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=872, PETRI_PLACES=98, PETRI_TRANSITIONS=134} [2023-08-26 23:24:11,906 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2023-08-26 23:24:11,907 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 134 transitions, 872 flow [2023-08-26 23:24:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 341.3333333333333) internal successors, (2048), 6 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:11,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:24:11,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:24:11,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:24:11,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:24:11,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:24:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash 200528072, now seen corresponding path program 1 times [2023-08-26 23:24:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:24:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6138261] [2023-08-26 23:24:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:24:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:24:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:24:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:24:12,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:24:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6138261] [2023-08-26 23:24:12,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6138261] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:24:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756932839] [2023-08-26 23:24:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:24:12,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:24:12,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:24:12,026 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) [2023-08-26 23:24:12,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 23:24:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:24:12,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:24:12,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:24:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:24:12,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:24:12,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756932839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:24:12,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:24:12,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-26 23:24:12,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293612813] [2023-08-26 23:24:12,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:24:12,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:24:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:24:12,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:24:12,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-26 23:24:12,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 956 [2023-08-26 23:24:12,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 134 transitions, 872 flow. Second operand has 4 states, 4 states have (on average 378.25) internal successors, (1513), 4 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:12,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:24:12,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 956 [2023-08-26 23:24:12,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:24:21,039 INFO L124 PetriNetUnfolderBase]: 71358/99181 cut-off events. [2023-08-26 23:24:21,040 INFO L125 PetriNetUnfolderBase]: For 13173/13173 co-relation queries the response was YES. [2023-08-26 23:24:21,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208678 conditions, 99181 events. 71358/99181 cut-off events. For 13173/13173 co-relation queries the response was YES. Maximal size of possible extension queue 3880. Compared 664164 event pairs, 60982 based on Foata normal form. 1096/47401 useless extension candidates. Maximal degree in co-relation 208651. Up to 99134 conditions per place. [2023-08-26 23:24:21,756 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 109 selfloop transitions, 23 changer transitions 0/132 dead transitions. [2023-08-26 23:24:21,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 132 transitions, 1122 flow [2023-08-26 23:24:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:24:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:24:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1564 transitions. [2023-08-26 23:24:21,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089958158995816 [2023-08-26 23:24:21,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1564 transitions. [2023-08-26 23:24:21,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1564 transitions. [2023-08-26 23:24:21,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:24:21,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1564 transitions. [2023-08-26 23:24:21,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 391.0) internal successors, (1564), 4 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:21,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 956.0) internal successors, (4780), 5 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:21,765 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 956.0) internal successors, (4780), 5 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:21,765 INFO L175 Difference]: Start difference. First operand has 98 places, 134 transitions, 872 flow. Second operand 4 states and 1564 transitions. [2023-08-26 23:24:21,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 132 transitions, 1122 flow [2023-08-26 23:24:21,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 1028 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-26 23:24:21,774 INFO L231 Difference]: Finished difference. Result has 95 places, 132 transitions, 810 flow [2023-08-26 23:24:21,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=810, PETRI_PLACES=95, PETRI_TRANSITIONS=132} [2023-08-26 23:24:21,774 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2023-08-26 23:24:21,774 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 132 transitions, 810 flow [2023-08-26 23:24:21,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 378.25) internal successors, (1513), 4 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:21,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:24:21,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:24:21,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 23:24:21,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:24:21,981 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:24:21,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:24:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash -493104496, now seen corresponding path program 1 times [2023-08-26 23:24:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:24:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314466269] [2023-08-26 23:24:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:24:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:24:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:24:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:24:22,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:24:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314466269] [2023-08-26 23:24:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314466269] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:24:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352185672] [2023-08-26 23:24:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:24:22,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:24:22,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:24:22,121 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:24:22,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 23:24:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:24:22,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:24:22,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:24:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:24:22,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:24:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352185672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:24:22,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:24:22,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-26 23:24:22,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395375846] [2023-08-26 23:24:22,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:24:22,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:24:22,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:24:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:24:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:24:22,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 956 [2023-08-26 23:24:22,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 132 transitions, 810 flow. Second operand has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:22,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:24:22,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 956 [2023-08-26 23:24:22,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:24:29,571 INFO L124 PetriNetUnfolderBase]: 62792/87295 cut-off events. [2023-08-26 23:24:29,572 INFO L125 PetriNetUnfolderBase]: For 7324/7324 co-relation queries the response was YES. [2023-08-26 23:24:29,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181387 conditions, 87295 events. 62792/87295 cut-off events. For 7324/7324 co-relation queries the response was YES. Maximal size of possible extension queue 3389. Compared 575702 event pairs, 53308 based on Foata normal form. 1004/41675 useless extension candidates. Maximal degree in co-relation 181362. Up to 87295 conditions per place. [2023-08-26 23:24:30,328 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 128 selfloop transitions, 1 changer transitions 0/129 dead transitions. [2023-08-26 23:24:30,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 1053 flow [2023-08-26 23:24:30,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:24:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:24:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1187 transitions. [2023-08-26 23:24:30,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41387726638772665 [2023-08-26 23:24:30,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1187 transitions. [2023-08-26 23:24:30,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1187 transitions. [2023-08-26 23:24:30,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:24:30,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1187 transitions. [2023-08-26 23:24:30,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:30,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:30,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:30,335 INFO L175 Difference]: Start difference. First operand has 95 places, 132 transitions, 810 flow. Second operand 3 states and 1187 transitions. [2023-08-26 23:24:30,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 129 transitions, 1053 flow [2023-08-26 23:24:30,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 23:24:30,341 INFO L231 Difference]: Finished difference. Result has 89 places, 129 transitions, 768 flow [2023-08-26 23:24:30,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=89, PETRI_TRANSITIONS=129} [2023-08-26 23:24:30,341 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2023-08-26 23:24:30,342 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 129 transitions, 768 flow [2023-08-26 23:24:30,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:30,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:24:30,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:24:30,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 23:24:30,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 23:24:30,545 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:24:30,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:24:30,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1347922825, now seen corresponding path program 1 times [2023-08-26 23:24:30,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:24:30,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929797649] [2023-08-26 23:24:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:24:30,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:24:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:24:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:24:30,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:24:30,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929797649] [2023-08-26 23:24:30,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929797649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:24:30,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:24:30,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:24:30,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685270326] [2023-08-26 23:24:30,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:24:30,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:24:30,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:24:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:24:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:24:30,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 956 [2023-08-26 23:24:30,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 129 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:30,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:24:30,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 956 [2023-08-26 23:24:30,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:24:43,466 INFO L124 PetriNetUnfolderBase]: 110248/152999 cut-off events. [2023-08-26 23:24:43,467 INFO L125 PetriNetUnfolderBase]: For 7400/7400 co-relation queries the response was YES. [2023-08-26 23:24:44,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317507 conditions, 152999 events. 110248/152999 cut-off events. For 7400/7400 co-relation queries the response was YES. Maximal size of possible extension queue 5771. Compared 1089021 event pairs, 53308 based on Foata normal form. 0/71447 useless extension candidates. Maximal degree in co-relation 317485. Up to 87296 conditions per place. [2023-08-26 23:24:44,514 INFO L140 encePairwiseOnDemand]: 952/956 looper letters, 170 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-08-26 23:24:44,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 172 transitions, 1212 flow [2023-08-26 23:24:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:24:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:24:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1283 transitions. [2023-08-26 23:24:44,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44735006973500696 [2023-08-26 23:24:44,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1283 transitions. [2023-08-26 23:24:44,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1283 transitions. [2023-08-26 23:24:44,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:24:44,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1283 transitions. [2023-08-26 23:24:44,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:44,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:44,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 956.0) internal successors, (3824), 4 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:44,523 INFO L175 Difference]: Start difference. First operand has 89 places, 129 transitions, 768 flow. Second operand 3 states and 1283 transitions. [2023-08-26 23:24:44,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 172 transitions, 1212 flow [2023-08-26 23:24:44,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 172 transitions, 1211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:24:44,531 INFO L231 Difference]: Finished difference. Result has 91 places, 130 transitions, 781 flow [2023-08-26 23:24:44,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=781, PETRI_PLACES=91, PETRI_TRANSITIONS=130} [2023-08-26 23:24:44,532 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2023-08-26 23:24:44,532 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 130 transitions, 781 flow [2023-08-26 23:24:44,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:44,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:24:44,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:24:44,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 23:24:44,532 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:24:44,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:24:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1347949465, now seen corresponding path program 1 times [2023-08-26 23:24:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:24:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098532415] [2023-08-26 23:24:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:24:44,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:24:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:24:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:24:44,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:24:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098532415] [2023-08-26 23:24:44,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098532415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:24:44,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:24:44,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:24:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517387503] [2023-08-26 23:24:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:24:44,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:24:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:24:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:24:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:24:44,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-26 23:24:44,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 130 transitions, 781 flow. Second operand has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:44,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:24:44,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-26 23:24:44,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:24:57,577 INFO L124 PetriNetUnfolderBase]: 105134/145937 cut-off events. [2023-08-26 23:24:57,577 INFO L125 PetriNetUnfolderBase]: For 16286/16286 co-relation queries the response was YES. [2023-08-26 23:24:58,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314460 conditions, 145937 events. 105134/145937 cut-off events. For 16286/16286 co-relation queries the response was YES. Maximal size of possible extension queue 5522. Compared 1014908 event pairs, 88176 based on Foata normal form. 0/72461 useless extension candidates. Maximal degree in co-relation 314437. Up to 76444 conditions per place. [2023-08-26 23:24:58,620 INFO L140 encePairwiseOnDemand]: 950/956 looper letters, 143 selfloop transitions, 36 changer transitions 0/179 dead transitions. [2023-08-26 23:24:58,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 179 transitions, 1265 flow [2023-08-26 23:24:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:24:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:24:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1807 transitions. [2023-08-26 23:24:58,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37803347280334726 [2023-08-26 23:24:58,623 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1807 transitions. [2023-08-26 23:24:58,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1807 transitions. [2023-08-26 23:24:58,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:24:58,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1807 transitions. [2023-08-26 23:24:58,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 361.4) internal successors, (1807), 5 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:58,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 956.0) internal successors, (5736), 6 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:58,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 956.0) internal successors, (5736), 6 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:58,629 INFO L175 Difference]: Start difference. First operand has 91 places, 130 transitions, 781 flow. Second operand 5 states and 1807 transitions. [2023-08-26 23:24:58,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 179 transitions, 1265 flow [2023-08-26 23:24:58,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 179 transitions, 1261 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:24:58,644 INFO L231 Difference]: Finished difference. Result has 96 places, 131 transitions, 872 flow [2023-08-26 23:24:58,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=872, PETRI_PLACES=96, PETRI_TRANSITIONS=131} [2023-08-26 23:24:58,644 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2023-08-26 23:24:58,645 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 131 transitions, 872 flow [2023-08-26 23:24:58,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:58,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:24:58,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:24:58,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 23:24:58,645 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-26 23:24:58,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:24:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1347949587, now seen corresponding path program 1 times [2023-08-26 23:24:58,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:24:58,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473199602] [2023-08-26 23:24:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:24:58,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:24:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:24:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:24:58,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:24:58,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473199602] [2023-08-26 23:24:58,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473199602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:24:58,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:24:58,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:24:58,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154701533] [2023-08-26 23:24:58,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:24:58,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:24:58,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:24:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:24:58,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 23:24:58,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-26 23:24:58,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 131 transitions, 872 flow. Second operand has 4 states, 4 states have (on average 342.5) internal successors, (1370), 4 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:24:58,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:24:58,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-26 23:24:58,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand