/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -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 [2023-08-27 12:32:56,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 12:32:56,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 12:32:56,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 12:32:56,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 12:32:56,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 12:32:56,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 12:32:56,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 12:32:56,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 12:32:56,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 12:32:56,788 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 12:32:56,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 12:32:56,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 12:32:56,789 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 12:32:56,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 12:32:56,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 12:32:56,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 12:32:56,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 12:32:56,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 12:32:56,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 12:32:56,791 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 12:32:56,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 12:32:56,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 12:32:56,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 12:32:56,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 12:32:56,793 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 12:32:56,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 12:32:56,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 12:32:56,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 12:32:56,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 12:32:56,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 12:32:56,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 12:32:56,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 12:32:56,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 12:32:56,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 12:32:56,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 12:32:57,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 12:32:57,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 12:32:57,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 12:32:57,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 12:32:57,105 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 12:32:57,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-27 12:32:58,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 12:32:58,457 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 12:32:58,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-08-27 12:32:58,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb5c5b4b/8ea005f3ac1a4500af3e4dc890f0d1f9/FLAG8f93d81cb [2023-08-27 12:32:58,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afb5c5b4b/8ea005f3ac1a4500af3e4dc890f0d1f9 [2023-08-27 12:32:58,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 12:32:58,477 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 12:32:58,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 12:32:58,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 12:32:58,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 12:32:58,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db9a699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58, skipping insertion in model container [2023-08-27 12:32:58,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,500 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 12:32:58,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 12:32:58,707 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 12:32:58,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 12:32:58,757 INFO L206 MainTranslator]: Completed translation [2023-08-27 12:32:58,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58 WrapperNode [2023-08-27 12:32:58,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 12:32:58,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 12:32:58,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 12:32:58,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 12:32:58,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,821 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 352 [2023-08-27 12:32:58,821 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 12:32:58,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 12:32:58,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 12:32:58,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 12:32:58,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,874 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 12:32:58,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 12:32:58,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 12:32:58,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 12:32:58,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (1/1) ... [2023-08-27 12:32:58,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 12:32:58,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:32:58,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 12:32:58,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 12:32:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 12:32:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 12:32:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 12:32:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 12:32:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 12:32:58,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 12:32:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 12:32:58,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 12:32:58,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 12:32:58,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 12:32:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 12:32:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 12:32:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 12:32:58,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 12:32:58,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 12:32:58,938 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 12:32:59,039 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 12:32:59,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 12:32:59,461 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 12:32:59,471 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 12:32:59,471 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 12:32:59,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:32:59 BoogieIcfgContainer [2023-08-27 12:32:59,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 12:32:59,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 12:32:59,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 12:32:59,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 12:32:59,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:32:58" (1/3) ... [2023-08-27 12:32:59,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ec5741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:32:59, skipping insertion in model container [2023-08-27 12:32:59,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:32:58" (2/3) ... [2023-08-27 12:32:59,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ec5741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:32:59, skipping insertion in model container [2023-08-27 12:32:59,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:32:59" (3/3) ... [2023-08-27 12:32:59,480 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-08-27 12:32:59,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 12:32:59,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2023-08-27 12:32:59,493 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 12:32:59,607 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 12:32:59,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 430 transitions, 884 flow [2023-08-27 12:32:59,818 INFO L124 PetriNetUnfolderBase]: 35/427 cut-off events. [2023-08-27 12:32:59,819 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 12:32:59,829 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. [2023-08-27 12:32:59,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 405 places, 430 transitions, 884 flow [2023-08-27 12:32:59,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 391 places, 416 transitions, 850 flow [2023-08-27 12:32:59,848 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 12:32:59,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 416 transitions, 850 flow [2023-08-27 12:32:59,859 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 416 transitions, 850 flow [2023-08-27 12:32:59,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 416 transitions, 850 flow [2023-08-27 12:32:59,948 INFO L124 PetriNetUnfolderBase]: 35/416 cut-off events. [2023-08-27 12:32:59,948 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 12:32:59,951 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. [2023-08-27 12:32:59,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 38184 [2023-08-27 12:33:16,150 INFO L134 LiptonReduction]: Checked pairs total: 50865 [2023-08-27 12:33:16,150 INFO L136 LiptonReduction]: Total number of compositions: 526 [2023-08-27 12:33:16,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 12:33:16,164 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;@26a9ec6e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 12:33:16,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2023-08-27 12:33:16,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 12:33:16,166 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 12:33:16,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:33:16,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:16,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 12:33:16,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:16,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash 57205, now seen corresponding path program 1 times [2023-08-27 12:33:16,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:16,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732695111] [2023-08-27 12:33:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:16,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:16,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732695111] [2023-08-27 12:33:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732695111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:16,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:33:16,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:33:16,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705740135] [2023-08-27 12:33:16,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:33:16,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:33:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:33:16,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 956 [2023-08-27 12:33:16,485 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) [2023-08-27 12:33:16,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:16,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 956 [2023-08-27 12:33:16,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:18,447 INFO L124 PetriNetUnfolderBase]: 12933/18010 cut-off events. [2023-08-27 12:33:18,448 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2023-08-27 12:33:18,462 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. [2023-08-27 12:33:18,543 INFO L140 encePairwiseOnDemand]: 937/956 looper letters, 65 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2023-08-27 12:33:18,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 306 flow [2023-08-27 12:33:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:33:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:33:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1221 transitions. [2023-08-27 12:33:18,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42573221757322177 [2023-08-27 12:33:18,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1221 transitions. [2023-08-27 12:33:18,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1221 transitions. [2023-08-27 12:33:18,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:18,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1221 transitions. [2023-08-27 12:33:18,569 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) [2023-08-27 12:33:18,577 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) [2023-08-27 12:33:18,578 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) [2023-08-27 12:33:18,580 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 162 flow. Second operand 3 states and 1221 transitions. [2023-08-27 12:33:18,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 306 flow [2023-08-27 12:33:18,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 12:33:18,603 INFO L231 Difference]: Finished difference. Result has 66 places, 72 transitions, 202 flow [2023-08-27 12:33:18,604 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} [2023-08-27 12:33:18,607 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-08-27 12:33:18,607 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 72 transitions, 202 flow [2023-08-27 12:33:18,608 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) [2023-08-27 12:33:18,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:18,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:33:18,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 12:33:18,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:18,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1776403, now seen corresponding path program 1 times [2023-08-27 12:33:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:18,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698797061] [2023-08-27 12:33:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:18,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698797061] [2023-08-27 12:33:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698797061] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:33:18,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875355541] [2023-08-27 12:33:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:18,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:33:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:33:18,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:33:18,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 12:33:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:18,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 12:33:18,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:33:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:18,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:33:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875355541] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:33:18,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:33:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 12:33:18,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845663127] [2023-08-27 12:33:18,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:33:18,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 12:33:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:18,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 12:33:18,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 12:33:18,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 956 [2023-08-27 12:33:18,890 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) [2023-08-27 12:33:18,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:18,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 956 [2023-08-27 12:33:18,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:20,672 INFO L124 PetriNetUnfolderBase]: 12951/18037 cut-off events. [2023-08-27 12:33:20,672 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-08-27 12:33:20,685 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. [2023-08-27 12:33:20,739 INFO L140 encePairwiseOnDemand]: 943/956 looper letters, 62 selfloop transitions, 37 changer transitions 0/99 dead transitions. [2023-08-27 12:33:20,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 99 transitions, 520 flow [2023-08-27 12:33:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 12:33:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 12:33:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2761 transitions. [2023-08-27 12:33:20,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125821876867902 [2023-08-27 12:33:20,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2761 transitions. [2023-08-27 12:33:20,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2761 transitions. [2023-08-27 12:33:20,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:20,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2761 transitions. [2023-08-27 12:33:20,755 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) [2023-08-27 12:33:20,766 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) [2023-08-27 12:33:20,769 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) [2023-08-27 12:33:20,770 INFO L175 Difference]: Start difference. First operand has 66 places, 72 transitions, 202 flow. Second operand 7 states and 2761 transitions. [2023-08-27 12:33:20,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 99 transitions, 520 flow [2023-08-27 12:33:20,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 99 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:33:20,773 INFO L231 Difference]: Finished difference. Result has 73 places, 99 transitions, 432 flow [2023-08-27 12:33:20,773 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} [2023-08-27 12:33:20,774 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -1 predicate places. [2023-08-27 12:33:20,774 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 99 transitions, 432 flow [2023-08-27 12:33:20,777 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) [2023-08-27 12:33:20,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:20,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 12:33:20,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 12:33:20,984 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 [2023-08-27 12:33:20,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:20,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash 55071540, now seen corresponding path program 1 times [2023-08-27 12:33:20,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:20,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537972034] [2023-08-27 12:33:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:20,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:21,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:21,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537972034] [2023-08-27 12:33:21,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537972034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:33:21,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85197632] [2023-08-27 12:33:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:21,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:33:21,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:33:21,067 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:33:21,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 12:33:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:21,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 12:33:21,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:33:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:21,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:33:21,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85197632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:21,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:33:21,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 12:33:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525588269] [2023-08-27 12:33:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:21,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:33:21,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:33:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 12:33:21,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 956 [2023-08-27 12:33:21,190 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) [2023-08-27 12:33:21,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:21,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 956 [2023-08-27 12:33:21,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:22,865 INFO L124 PetriNetUnfolderBase]: 12942/18025 cut-off events. [2023-08-27 12:33:22,865 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-08-27 12:33:22,879 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. [2023-08-27 12:33:22,928 INFO L140 encePairwiseOnDemand]: 946/956 looper letters, 67 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2023-08-27 12:33:22,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 525 flow [2023-08-27 12:33:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:33:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:33:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1976 transitions. [2023-08-27 12:33:22,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41338912133891215 [2023-08-27 12:33:22,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1976 transitions. [2023-08-27 12:33:22,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1976 transitions. [2023-08-27 12:33:22,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:22,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1976 transitions. [2023-08-27 12:33:22,940 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) [2023-08-27 12:33:22,947 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) [2023-08-27 12:33:22,949 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) [2023-08-27 12:33:22,949 INFO L175 Difference]: Start difference. First operand has 73 places, 99 transitions, 432 flow. Second operand 5 states and 1976 transitions. [2023-08-27 12:33:22,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 525 flow [2023-08-27 12:33:22,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 488 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-27 12:33:22,953 INFO L231 Difference]: Finished difference. Result has 72 places, 87 transitions, 354 flow [2023-08-27 12:33:22,953 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} [2023-08-27 12:33:22,954 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-27 12:33:22,954 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 87 transitions, 354 flow [2023-08-27 12:33:22,955 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) [2023-08-27 12:33:22,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:22,955 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 12:33:22,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 12:33:23,160 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 [2023-08-27 12:33:23,161 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:23,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1384240885, now seen corresponding path program 2 times [2023-08-27 12:33:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:23,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966931401] [2023-08-27 12:33:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:23,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:23,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966931401] [2023-08-27 12:33:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966931401] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:33:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145547501] [2023-08-27 12:33:23,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 12:33:23,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:33:23,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:33:23,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:33:23,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 12:33:23,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 12:33:23,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 12:33:23,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 12:33:23,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:33:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 12:33:23,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:33:23,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145547501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:23,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:33:23,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 12:33:23,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000707124] [2023-08-27 12:33:23,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:23,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:33:23,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:23,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:33:23,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 12:33:23,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 956 [2023-08-27 12:33:23,394 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) [2023-08-27 12:33:23,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:23,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 956 [2023-08-27 12:33:23,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:24,796 INFO L124 PetriNetUnfolderBase]: 12942/18024 cut-off events. [2023-08-27 12:33:24,796 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-08-27 12:33:24,815 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. [2023-08-27 12:33:24,873 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 80 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2023-08-27 12:33:24,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 516 flow [2023-08-27 12:33:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:33:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:33:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1209 transitions. [2023-08-27 12:33:24,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215481171548117 [2023-08-27 12:33:24,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1209 transitions. [2023-08-27 12:33:24,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1209 transitions. [2023-08-27 12:33:24,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:24,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1209 transitions. [2023-08-27 12:33:24,881 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) [2023-08-27 12:33:24,886 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) [2023-08-27 12:33:24,888 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) [2023-08-27 12:33:24,888 INFO L175 Difference]: Start difference. First operand has 72 places, 87 transitions, 354 flow. Second operand 3 states and 1209 transitions. [2023-08-27 12:33:24,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 516 flow [2023-08-27 12:33:24,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 488 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 12:33:24,891 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 328 flow [2023-08-27 12:33:24,891 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} [2023-08-27 12:33:24,892 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-08-27 12:33:24,892 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 328 flow [2023-08-27 12:33:24,893 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) [2023-08-27 12:33:24,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:24,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 12:33:24,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 12:33:25,097 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 [2023-08-27 12:33:25,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:25,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1436059712, now seen corresponding path program 1 times [2023-08-27 12:33:25,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:25,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080090363] [2023-08-27 12:33:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:25,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:25,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:25,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080090363] [2023-08-27 12:33:25,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080090363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:25,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:33:25,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 12:33:25,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495248431] [2023-08-27 12:33:25,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:25,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:33:25,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:25,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:33:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:33:25,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-27 12:33:25,255 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) [2023-08-27 12:33:25,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:25,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-27 12:33:25,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:27,546 INFO L124 PetriNetUnfolderBase]: 24512/33995 cut-off events. [2023-08-27 12:33:27,546 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2023-08-27 12:33:27,593 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. [2023-08-27 12:33:27,672 INFO L140 encePairwiseOnDemand]: 950/956 looper letters, 151 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2023-08-27 12:33:27,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 160 transitions, 897 flow [2023-08-27 12:33:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:33:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:33:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1823 transitions. [2023-08-27 12:33:27,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813807531380753 [2023-08-27 12:33:27,678 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1823 transitions. [2023-08-27 12:33:27,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1823 transitions. [2023-08-27 12:33:27,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:27,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1823 transitions. [2023-08-27 12:33:27,682 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) [2023-08-27 12:33:27,688 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) [2023-08-27 12:33:27,689 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) [2023-08-27 12:33:27,689 INFO L175 Difference]: Start difference. First operand has 70 places, 86 transitions, 328 flow. Second operand 5 states and 1823 transitions. [2023-08-27 12:33:27,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 160 transitions, 897 flow [2023-08-27 12:33:27,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 160 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:33:27,693 INFO L231 Difference]: Finished difference. Result has 75 places, 92 transitions, 395 flow [2023-08-27 12:33:27,693 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} [2023-08-27 12:33:27,694 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2023-08-27 12:33:27,694 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 92 transitions, 395 flow [2023-08-27 12:33:27,694 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) [2023-08-27 12:33:27,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:27,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:33:27,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 12:33:27,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:27,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:27,695 INFO L85 PathProgramCache]: Analyzing trace with hash 13616277, now seen corresponding path program 1 times [2023-08-27 12:33:27,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:27,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360721425] [2023-08-27 12:33:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:27,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:27,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360721425] [2023-08-27 12:33:27,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360721425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:33:27,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636379674] [2023-08-27 12:33:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:27,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:33:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:33:27,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:33:27,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 12:33:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:27,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 12:33:27,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:33:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:27,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:33:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:28,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636379674] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 12:33:28,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 12:33:28,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2023-08-27 12:33:28,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651774890] [2023-08-27 12:33:28,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:28,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:33:28,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:28,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:33:28,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-27 12:33:28,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-27 12:33:28,021 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) [2023-08-27 12:33:28,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:28,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-27 12:33:28,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:29,926 INFO L124 PetriNetUnfolderBase]: 23322/32467 cut-off events. [2023-08-27 12:33:29,926 INFO L125 PetriNetUnfolderBase]: For 2015/2015 co-relation queries the response was YES. [2023-08-27 12:33:29,967 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. [2023-08-27 12:33:30,046 INFO L140 encePairwiseOnDemand]: 954/956 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-27 12:33:30,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 565 flow [2023-08-27 12:33:30,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:33:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:33:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2023-08-27 12:33:30,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3772663877266388 [2023-08-27 12:33:30,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2023-08-27 12:33:30,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2023-08-27 12:33:30,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:30,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2023-08-27 12:33:30,052 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) [2023-08-27 12:33:30,055 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) [2023-08-27 12:33:30,056 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) [2023-08-27 12:33:30,056 INFO L175 Difference]: Start difference. First operand has 75 places, 92 transitions, 395 flow. Second operand 3 states and 1082 transitions. [2023-08-27 12:33:30,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 565 flow [2023-08-27 12:33:30,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 557 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 12:33:30,059 INFO L231 Difference]: Finished difference. Result has 74 places, 90 transitions, 379 flow [2023-08-27 12:33:30,059 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} [2023-08-27 12:33:30,060 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-08-27 12:33:30,060 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 90 transitions, 379 flow [2023-08-27 12:33:30,061 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) [2023-08-27 12:33:30,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:30,061 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 12:33:30,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 12:33:30,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:33:30,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:30,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1495365757, now seen corresponding path program 1 times [2023-08-27 12:33:30,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:30,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862176564] [2023-08-27 12:33:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:30,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:30,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:30,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862176564] [2023-08-27 12:33:30,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862176564] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:33:30,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805115801] [2023-08-27 12:33:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:30,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:33:30,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:33:30,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:33:30,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 12:33:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:30,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 12:33:30,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:33:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:30,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:33:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:30,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805115801] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:33:30,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:33:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 12:33:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276551356] [2023-08-27 12:33:30,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:33:30,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 12:33:30,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 12:33:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 12:33:30,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 956 [2023-08-27 12:33:30,541 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) [2023-08-27 12:33:30,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:30,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 956 [2023-08-27 12:33:30,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:32,980 INFO L124 PetriNetUnfolderBase]: 23352/32527 cut-off events. [2023-08-27 12:33:32,980 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2023-08-27 12:33:33,020 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. [2023-08-27 12:33:33,095 INFO L140 encePairwiseOnDemand]: 947/956 looper letters, 61 selfloop transitions, 71 changer transitions 0/132 dead transitions. [2023-08-27 12:33:33,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 937 flow [2023-08-27 12:33:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 12:33:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 12:33:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4681 transitions. [2023-08-27 12:33:33,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40803695955369595 [2023-08-27 12:33:33,105 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4681 transitions. [2023-08-27 12:33:33,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4681 transitions. [2023-08-27 12:33:33,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:33,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4681 transitions. [2023-08-27 12:33:33,115 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) [2023-08-27 12:33:33,125 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) [2023-08-27 12:33:33,127 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) [2023-08-27 12:33:33,127 INFO L175 Difference]: Start difference. First operand has 74 places, 90 transitions, 379 flow. Second operand 12 states and 4681 transitions. [2023-08-27 12:33:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 937 flow [2023-08-27 12:33:33,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 936 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:33:33,133 INFO L231 Difference]: Finished difference. Result has 90 places, 132 transitions, 906 flow [2023-08-27 12:33:33,133 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} [2023-08-27 12:33:33,133 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-08-27 12:33:33,135 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 132 transitions, 906 flow [2023-08-27 12:33:33,137 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) [2023-08-27 12:33:33,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:33,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:33:33,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 12:33:33,342 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 [2023-08-27 12:33:33,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:33,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash 13616350, now seen corresponding path program 1 times [2023-08-27 12:33:33,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:33,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553577692] [2023-08-27 12:33:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:33,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:33,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:33,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553577692] [2023-08-27 12:33:33,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553577692] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:33:33,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384921446] [2023-08-27 12:33:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:33,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:33:33,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:33:33,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:33:33,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 12:33:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:33,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 12:33:33,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:33:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:33:33,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:33:33,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384921446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:33,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:33:33,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-27 12:33:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466659518] [2023-08-27 12:33:33,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:33:33,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:33:33,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 12:33:33,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 956 [2023-08-27 12:33:33,601 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) [2023-08-27 12:33:33,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:33,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 956 [2023-08-27 12:33:33,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:35,716 INFO L124 PetriNetUnfolderBase]: 22500/31337 cut-off events. [2023-08-27 12:33:35,716 INFO L125 PetriNetUnfolderBase]: For 802/802 co-relation queries the response was YES. [2023-08-27 12:33:35,808 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. [2023-08-27 12:33:35,905 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 119 selfloop transitions, 12 changer transitions 0/131 dead transitions. [2023-08-27 12:33:35,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1164 flow [2023-08-27 12:33:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:33:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:33:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1565 transitions. [2023-08-27 12:33:35,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40925732217573224 [2023-08-27 12:33:35,908 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1565 transitions. [2023-08-27 12:33:35,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1565 transitions. [2023-08-27 12:33:35,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:35,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1565 transitions. [2023-08-27 12:33:35,911 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) [2023-08-27 12:33:35,915 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) [2023-08-27 12:33:35,916 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) [2023-08-27 12:33:35,916 INFO L175 Difference]: Start difference. First operand has 90 places, 132 transitions, 906 flow. Second operand 4 states and 1565 transitions. [2023-08-27 12:33:35,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1164 flow [2023-08-27 12:33:35,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 955 flow, removed 52 selfloop flow, removed 6 redundant places. [2023-08-27 12:33:35,921 INFO L231 Difference]: Finished difference. Result has 86 places, 131 transitions, 717 flow [2023-08-27 12:33:35,921 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} [2023-08-27 12:33:35,922 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2023-08-27 12:33:35,922 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 131 transitions, 717 flow [2023-08-27 12:33:35,922 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) [2023-08-27 12:33:35,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:35,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:33:35,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 12:33:36,128 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 [2023-08-27 12:33:36,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:36,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1369028772, now seen corresponding path program 1 times [2023-08-27 12:33:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:36,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780348140] [2023-08-27 12:33:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:36,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:36,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:36,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780348140] [2023-08-27 12:33:36,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780348140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:36,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:33:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 12:33:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786097096] [2023-08-27 12:33:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:36,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:33:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:33:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:33:36,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 956 [2023-08-27 12:33:36,165 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) [2023-08-27 12:33:36,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:36,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 956 [2023-08-27 12:33:36,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:39,785 INFO L124 PetriNetUnfolderBase]: 39832/55417 cut-off events. [2023-08-27 12:33:39,785 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2023-08-27 12:33:39,960 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. [2023-08-27 12:33:40,108 INFO L140 encePairwiseOnDemand]: 952/956 looper letters, 176 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2023-08-27 12:33:40,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 178 transitions, 1172 flow [2023-08-27 12:33:40,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:33:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:33:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1291 transitions. [2023-08-27 12:33:40,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450139470013947 [2023-08-27 12:33:40,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1291 transitions. [2023-08-27 12:33:40,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1291 transitions. [2023-08-27 12:33:40,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:40,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1291 transitions. [2023-08-27 12:33:40,112 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) [2023-08-27 12:33:40,115 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) [2023-08-27 12:33:40,116 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) [2023-08-27 12:33:40,116 INFO L175 Difference]: Start difference. First operand has 86 places, 131 transitions, 717 flow. Second operand 3 states and 1291 transitions. [2023-08-27 12:33:40,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 178 transitions, 1172 flow [2023-08-27 12:33:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 178 transitions, 1159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:33:40,121 INFO L231 Difference]: Finished difference. Result has 87 places, 132 transitions, 718 flow [2023-08-27 12:33:40,121 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} [2023-08-27 12:33:40,123 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2023-08-27 12:33:40,123 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 132 transitions, 718 flow [2023-08-27 12:33:40,123 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) [2023-08-27 12:33:40,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:40,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:33:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 12:33:40,124 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:40,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1368998826, now seen corresponding path program 1 times [2023-08-27 12:33:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129596266] [2023-08-27 12:33:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129596266] [2023-08-27 12:33:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129596266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:40,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:33:40,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 12:33:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040836374] [2023-08-27 12:33:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:40,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:33:40,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:40,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:33:40,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:33:40,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-27 12:33:40,199 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) [2023-08-27 12:33:40,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:40,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-27 12:33:40,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:44,745 INFO L124 PetriNetUnfolderBase]: 38457/53494 cut-off events. [2023-08-27 12:33:44,745 INFO L125 PetriNetUnfolderBase]: For 4014/4014 co-relation queries the response was YES. [2023-08-27 12:33:44,888 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. [2023-08-27 12:33:45,010 INFO L140 encePairwiseOnDemand]: 950/956 looper letters, 233 selfloop transitions, 15 changer transitions 0/248 dead transitions. [2023-08-27 12:33:45,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 248 transitions, 1649 flow [2023-08-27 12:33:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:33:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:33:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2188 transitions. [2023-08-27 12:33:45,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38145048814504884 [2023-08-27 12:33:45,014 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2188 transitions. [2023-08-27 12:33:45,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2188 transitions. [2023-08-27 12:33:45,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:45,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2188 transitions. [2023-08-27 12:33:45,017 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) [2023-08-27 12:33:45,021 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) [2023-08-27 12:33:45,022 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) [2023-08-27 12:33:45,022 INFO L175 Difference]: Start difference. First operand has 87 places, 132 transitions, 718 flow. Second operand 6 states and 2188 transitions. [2023-08-27 12:33:45,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 248 transitions, 1649 flow [2023-08-27 12:33:45,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 248 transitions, 1643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:33:45,029 INFO L231 Difference]: Finished difference. Result has 93 places, 133 transitions, 766 flow [2023-08-27 12:33:45,029 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} [2023-08-27 12:33:45,030 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2023-08-27 12:33:45,030 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 133 transitions, 766 flow [2023-08-27 12:33:45,030 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) [2023-08-27 12:33:45,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:45,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:33:45,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 12:33:45,031 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:45,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1368998633, now seen corresponding path program 1 times [2023-08-27 12:33:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:45,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133729699] [2023-08-27 12:33:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:45,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:45,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133729699] [2023-08-27 12:33:45,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133729699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:45,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:33:45,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:33:45,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451876432] [2023-08-27 12:33:45,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:45,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 12:33:45,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:45,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 12:33:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 12:33:45,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-27 12:33:45,123 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) [2023-08-27 12:33:45,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:45,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-27 12:33:45,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:33:53,688 INFO L124 PetriNetUnfolderBase]: 73281/101652 cut-off events. [2023-08-27 12:33:53,689 INFO L125 PetriNetUnfolderBase]: For 8261/8261 co-relation queries the response was YES. [2023-08-27 12:33:54,037 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. [2023-08-27 12:33:54,292 INFO L140 encePairwiseOnDemand]: 949/956 looper letters, 147 selfloop transitions, 37 changer transitions 0/184 dead transitions. [2023-08-27 12:33:54,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 184 transitions, 1254 flow [2023-08-27 12:33:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:33:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:33:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2153 transitions. [2023-08-27 12:33:54,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3753486750348675 [2023-08-27 12:33:54,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2153 transitions. [2023-08-27 12:33:54,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2153 transitions. [2023-08-27 12:33:54,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:33:54,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2153 transitions. [2023-08-27 12:33:54,299 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) [2023-08-27 12:33:54,304 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) [2023-08-27 12:33:54,305 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) [2023-08-27 12:33:54,305 INFO L175 Difference]: Start difference. First operand has 93 places, 133 transitions, 766 flow. Second operand 6 states and 2153 transitions. [2023-08-27 12:33:54,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 184 transitions, 1254 flow [2023-08-27 12:33:54,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 184 transitions, 1239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:33:54,319 INFO L231 Difference]: Finished difference. Result has 98 places, 134 transitions, 872 flow [2023-08-27 12:33:54,319 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} [2023-08-27 12:33:54,319 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2023-08-27 12:33:54,319 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 134 transitions, 872 flow [2023-08-27 12:33:54,320 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) [2023-08-27 12:33:54,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:33:54,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:33:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 12:33:54,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:33:54,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:33:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 200528072, now seen corresponding path program 1 times [2023-08-27 12:33:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:33:54,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242287885] [2023-08-27 12:33:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:33:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:33:54,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:33:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242287885] [2023-08-27 12:33:54,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242287885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:33:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93040068] [2023-08-27 12:33:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:33:54,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:33:54,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:33:54,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:33:54,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 12:33:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:33:54,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 12:33:54,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:33:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:33:54,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:33:54,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93040068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:33:54,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:33:54,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-27 12:33:54,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269471661] [2023-08-27 12:33:54,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:33:54,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:33:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:33:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:33:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-27 12:33:54,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 956 [2023-08-27 12:33:54,601 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) [2023-08-27 12:33:54,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:33:54,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 956 [2023-08-27 12:33:54,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:34:02,942 INFO L124 PetriNetUnfolderBase]: 71358/99181 cut-off events. [2023-08-27 12:34:02,942 INFO L125 PetriNetUnfolderBase]: For 13173/13173 co-relation queries the response was YES. [2023-08-27 12:34:03,299 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. [2023-08-27 12:34:03,544 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 109 selfloop transitions, 23 changer transitions 0/132 dead transitions. [2023-08-27 12:34:03,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 132 transitions, 1122 flow [2023-08-27 12:34:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:34:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:34:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1564 transitions. [2023-08-27 12:34:03,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089958158995816 [2023-08-27 12:34:03,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1564 transitions. [2023-08-27 12:34:03,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1564 transitions. [2023-08-27 12:34:03,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:34:03,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1564 transitions. [2023-08-27 12:34:03,550 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) [2023-08-27 12:34:03,554 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) [2023-08-27 12:34:03,555 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) [2023-08-27 12:34:03,555 INFO L175 Difference]: Start difference. First operand has 98 places, 134 transitions, 872 flow. Second operand 4 states and 1564 transitions. [2023-08-27 12:34:03,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 132 transitions, 1122 flow [2023-08-27 12:34:03,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 1028 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-27 12:34:03,562 INFO L231 Difference]: Finished difference. Result has 95 places, 132 transitions, 810 flow [2023-08-27 12:34:03,563 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} [2023-08-27 12:34:03,563 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2023-08-27 12:34:03,563 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 132 transitions, 810 flow [2023-08-27 12:34:03,563 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) [2023-08-27 12:34:03,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:34:03,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:34:03,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 12:34:03,768 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 [2023-08-27 12:34:03,769 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:34:03,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:34:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash -493104496, now seen corresponding path program 1 times [2023-08-27 12:34:03,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:34:03,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339890878] [2023-08-27 12:34:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:34:03,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:34:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:34:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:34:03,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:34:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339890878] [2023-08-27 12:34:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339890878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:34:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086392282] [2023-08-27 12:34:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:34:03,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:34:03,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:34:03,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:34:03,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 12:34:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:34:03,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 12:34:03,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:34:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:34:04,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:34:04,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086392282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:34:04,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:34:04,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 12:34:04,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556021930] [2023-08-27 12:34:04,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:34:04,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:34:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:34:04,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:34:04,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-27 12:34:04,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 956 [2023-08-27 12:34:04,021 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) [2023-08-27 12:34:04,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:34:04,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 956 [2023-08-27 12:34:04,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:34:11,108 INFO L124 PetriNetUnfolderBase]: 62792/87295 cut-off events. [2023-08-27 12:34:11,108 INFO L125 PetriNetUnfolderBase]: For 7324/7324 co-relation queries the response was YES. [2023-08-27 12:34:11,424 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. [2023-08-27 12:34:11,632 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 128 selfloop transitions, 1 changer transitions 0/129 dead transitions. [2023-08-27 12:34:11,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 1053 flow [2023-08-27 12:34:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:34:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:34:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1187 transitions. [2023-08-27 12:34:11,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41387726638772665 [2023-08-27 12:34:11,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1187 transitions. [2023-08-27 12:34:11,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1187 transitions. [2023-08-27 12:34:11,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:34:11,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1187 transitions. [2023-08-27 12:34:11,637 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) [2023-08-27 12:34:11,639 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) [2023-08-27 12:34:11,639 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) [2023-08-27 12:34:11,639 INFO L175 Difference]: Start difference. First operand has 95 places, 132 transitions, 810 flow. Second operand 3 states and 1187 transitions. [2023-08-27 12:34:11,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 129 transitions, 1053 flow [2023-08-27 12:34:11,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 12:34:11,646 INFO L231 Difference]: Finished difference. Result has 89 places, 129 transitions, 768 flow [2023-08-27 12:34:11,647 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} [2023-08-27 12:34:11,647 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2023-08-27 12:34:11,647 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 129 transitions, 768 flow [2023-08-27 12:34:11,647 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) [2023-08-27 12:34:11,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:34:11,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:34:11,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 12:34:11,848 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 [2023-08-27 12:34:11,848 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:34:11,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:34:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1347922825, now seen corresponding path program 1 times [2023-08-27 12:34:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:34:11,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578022746] [2023-08-27 12:34:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:34:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:34:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:34:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:34:11,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:34:11,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578022746] [2023-08-27 12:34:11,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578022746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:34:11,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:34:11,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 12:34:11,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817739319] [2023-08-27 12:34:11,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:34:11,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:34:11,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:34:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:34:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:34:11,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 956 [2023-08-27 12:34:11,887 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) [2023-08-27 12:34:11,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:34:11,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 956 [2023-08-27 12:34:11,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:34:24,600 INFO L124 PetriNetUnfolderBase]: 110248/152999 cut-off events. [2023-08-27 12:34:24,600 INFO L125 PetriNetUnfolderBase]: For 7400/7400 co-relation queries the response was YES. [2023-08-27 12:34:25,210 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. [2023-08-27 12:34:25,609 INFO L140 encePairwiseOnDemand]: 952/956 looper letters, 170 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-08-27 12:34:25,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 172 transitions, 1212 flow [2023-08-27 12:34:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:34:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:34:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1283 transitions. [2023-08-27 12:34:25,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44735006973500696 [2023-08-27 12:34:25,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1283 transitions. [2023-08-27 12:34:25,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1283 transitions. [2023-08-27 12:34:25,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:34:25,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1283 transitions. [2023-08-27 12:34:25,614 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) [2023-08-27 12:34:25,615 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) [2023-08-27 12:34:25,616 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) [2023-08-27 12:34:25,616 INFO L175 Difference]: Start difference. First operand has 89 places, 129 transitions, 768 flow. Second operand 3 states and 1283 transitions. [2023-08-27 12:34:25,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 172 transitions, 1212 flow [2023-08-27 12:34:25,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 172 transitions, 1211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:34:25,622 INFO L231 Difference]: Finished difference. Result has 91 places, 130 transitions, 781 flow [2023-08-27 12:34:25,622 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} [2023-08-27 12:34:25,622 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2023-08-27 12:34:25,622 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 130 transitions, 781 flow [2023-08-27 12:34:25,623 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) [2023-08-27 12:34:25,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:34:25,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:34:25,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 12:34:25,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:34:25,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:34:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1347949465, now seen corresponding path program 1 times [2023-08-27 12:34:25,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:34:25,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406036132] [2023-08-27 12:34:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:34:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:34:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:34:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:34:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:34:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406036132] [2023-08-27 12:34:25,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406036132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:34:25,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:34:25,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:34:25,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742777900] [2023-08-27 12:34:25,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:34:25,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:34:25,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:34:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:34:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:34:25,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-27 12:34:25,719 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) [2023-08-27 12:34:25,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:34:25,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-27 12:34:25,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:34:38,331 INFO L124 PetriNetUnfolderBase]: 105134/145937 cut-off events. [2023-08-27 12:34:38,332 INFO L125 PetriNetUnfolderBase]: For 16286/16286 co-relation queries the response was YES. [2023-08-27 12:34:38,962 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. [2023-08-27 12:34:39,347 INFO L140 encePairwiseOnDemand]: 950/956 looper letters, 143 selfloop transitions, 36 changer transitions 0/179 dead transitions. [2023-08-27 12:34:39,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 179 transitions, 1265 flow [2023-08-27 12:34:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:34:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:34:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1807 transitions. [2023-08-27 12:34:39,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37803347280334726 [2023-08-27 12:34:39,350 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1807 transitions. [2023-08-27 12:34:39,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1807 transitions. [2023-08-27 12:34:39,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:34:39,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1807 transitions. [2023-08-27 12:34:39,353 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) [2023-08-27 12:34:39,355 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) [2023-08-27 12:34:39,356 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) [2023-08-27 12:34:39,356 INFO L175 Difference]: Start difference. First operand has 91 places, 130 transitions, 781 flow. Second operand 5 states and 1807 transitions. [2023-08-27 12:34:39,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 179 transitions, 1265 flow [2023-08-27 12:34:39,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 179 transitions, 1261 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:34:39,368 INFO L231 Difference]: Finished difference. Result has 96 places, 131 transitions, 872 flow [2023-08-27 12:34:39,368 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} [2023-08-27 12:34:39,368 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2023-08-27 12:34:39,369 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 131 transitions, 872 flow [2023-08-27 12:34:39,369 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) [2023-08-27 12:34:39,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:34:39,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:34:39,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 12:34:39,369 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:34:39,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:34:39,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1347949587, now seen corresponding path program 1 times [2023-08-27 12:34:39,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:34:39,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845202777] [2023-08-27 12:34:39,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:34:39,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:34:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:34:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:34:39,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:34:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845202777] [2023-08-27 12:34:39,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845202777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:34:39,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:34:39,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 12:34:39,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244969652] [2023-08-27 12:34:39,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:34:39,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:34:39,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:34:39,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:34:39,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 12:34:39,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-27 12:34:39,435 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) [2023-08-27 12:34:39,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:34:39,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-27 12:34:39,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:35:04,123 INFO L124 PetriNetUnfolderBase]: 196840/272567 cut-off events. [2023-08-27 12:35:04,124 INFO L125 PetriNetUnfolderBase]: For 42087/42087 co-relation queries the response was YES. [2023-08-27 12:35:05,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593359 conditions, 272567 events. 196840/272567 cut-off events. For 42087/42087 co-relation queries the response was YES. Maximal size of possible extension queue 9846. Compared 2017625 event pairs, 166486 based on Foata normal form. 3896/147535 useless extension candidates. Maximal degree in co-relation 593335. Up to 138863 conditions per place. [2023-08-27 12:35:06,213 INFO L140 encePairwiseOnDemand]: 949/956 looper letters, 186 selfloop transitions, 17 changer transitions 0/203 dead transitions. [2023-08-27 12:35:06,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 203 transitions, 1564 flow [2023-08-27 12:35:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:35:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:35:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1812 transitions. [2023-08-27 12:35:06,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790794979079498 [2023-08-27 12:35:06,217 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1812 transitions. [2023-08-27 12:35:06,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1812 transitions. [2023-08-27 12:35:06,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:35:06,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1812 transitions. [2023-08-27 12:35:06,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 362.4) internal successors, (1812), 5 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:35:06,224 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) [2023-08-27 12:35:06,225 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) [2023-08-27 12:35:06,225 INFO L175 Difference]: Start difference. First operand has 96 places, 131 transitions, 872 flow. Second operand 5 states and 1812 transitions. [2023-08-27 12:35:06,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 203 transitions, 1564 flow [2023-08-27 12:35:06,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 203 transitions, 1505 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:35:06,260 INFO L231 Difference]: Finished difference. Result has 101 places, 134 transitions, 899 flow [2023-08-27 12:35:06,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=899, PETRI_PLACES=101, PETRI_TRANSITIONS=134} [2023-08-27 12:35:06,261 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2023-08-27 12:35:06,261 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 134 transitions, 899 flow [2023-08-27 12:35:06,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-08-27 12:35:06,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:35:06,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:35:06,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 12:35:06,262 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:35:06,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:35:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1376796223, now seen corresponding path program 1 times [2023-08-27 12:35:06,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:35:06,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166874101] [2023-08-27 12:35:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:35:06,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:35:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:35:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:35:06,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:35:06,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166874101] [2023-08-27 12:35:06,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166874101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:35:06,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:35:06,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 12:35:06,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030389389] [2023-08-27 12:35:06,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:35:06,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:35:06,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:35:06,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:35:06,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:35:06,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 956 [2023-08-27 12:35:06,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 134 transitions, 899 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) [2023-08-27 12:35:06,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:35:06,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 956 [2023-08-27 12:35:06,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:35:31,337 INFO L124 PetriNetUnfolderBase]: 188406/260841 cut-off events. [2023-08-27 12:35:31,337 INFO L125 PetriNetUnfolderBase]: For 47263/47263 co-relation queries the response was YES. [2023-08-27 12:35:32,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574567 conditions, 260841 events. 188406/260841 cut-off events. For 47263/47263 co-relation queries the response was YES. Maximal size of possible extension queue 9141. Compared 2030973 event pairs, 4262 based on Foata normal form. 0/139093 useless extension candidates. Maximal degree in co-relation 574540. Up to 252238 conditions per place. [2023-08-27 12:35:33,353 INFO L140 encePairwiseOnDemand]: 954/956 looper letters, 163 selfloop transitions, 1 changer transitions 0/164 dead transitions. [2023-08-27 12:35:33,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 164 transitions, 1317 flow [2023-08-27 12:35:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:35:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:35:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1267 transitions. [2023-08-27 12:35:33,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417712691771269 [2023-08-27 12:35:33,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1267 transitions. [2023-08-27 12:35:33,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1267 transitions. [2023-08-27 12:35:33,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:35:33,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1267 transitions. [2023-08-27 12:35:33,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:35:33,361 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) [2023-08-27 12:35:33,362 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) [2023-08-27 12:35:33,362 INFO L175 Difference]: Start difference. First operand has 101 places, 134 transitions, 899 flow. Second operand 3 states and 1267 transitions. [2023-08-27 12:35:33,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 164 transitions, 1317 flow [2023-08-27 12:35:33,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 164 transitions, 1274 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 12:35:33,395 INFO L231 Difference]: Finished difference. Result has 101 places, 133 transitions, 854 flow [2023-08-27 12:35:33,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=854, PETRI_PLACES=101, PETRI_TRANSITIONS=133} [2023-08-27 12:35:33,396 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2023-08-27 12:35:33,396 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 133 transitions, 854 flow [2023-08-27 12:35:33,396 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) [2023-08-27 12:35:33,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:35:33,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:35:33,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 12:35:33,396 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:35:33,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:35:33,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1376796322, now seen corresponding path program 1 times [2023-08-27 12:35:33,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:35:33,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025872402] [2023-08-27 12:35:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:35:33,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:35:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:35:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:35:33,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:35:33,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025872402] [2023-08-27 12:35:33,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025872402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:35:33,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:35:33,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:35:33,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580246922] [2023-08-27 12:35:33,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:35:33,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:35:33,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:35:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:35:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:35:33,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 956 [2023-08-27 12:35:33,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 133 transitions, 854 flow. Second operand has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:35:33,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:35:33,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 956 [2023-08-27 12:35:33,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:35:47,479 INFO L124 PetriNetUnfolderBase]: 108513/151340 cut-off events. [2023-08-27 12:35:47,480 INFO L125 PetriNetUnfolderBase]: For 39895/39895 co-relation queries the response was YES. [2023-08-27 12:35:48,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337809 conditions, 151340 events. 108513/151340 cut-off events. For 39895/39895 co-relation queries the response was YES. Maximal size of possible extension queue 5054. Compared 1063154 event pairs, 81601 based on Foata normal form. 0/82690 useless extension candidates. Maximal degree in co-relation 337782. Up to 130431 conditions per place. [2023-08-27 12:35:48,595 INFO L140 encePairwiseOnDemand]: 947/956 looper letters, 222 selfloop transitions, 19 changer transitions 0/241 dead transitions. [2023-08-27 12:35:48,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 241 transitions, 1820 flow [2023-08-27 12:35:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:35:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:35:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2192 transitions. [2023-08-27 12:35:48,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821478382147838 [2023-08-27 12:35:48,598 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2192 transitions. [2023-08-27 12:35:48,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2192 transitions. [2023-08-27 12:35:48,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:35:48,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2192 transitions. [2023-08-27 12:35:48,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 365.3333333333333) internal successors, (2192), 6 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:35:48,605 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) [2023-08-27 12:35:48,605 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) [2023-08-27 12:35:48,605 INFO L175 Difference]: Start difference. First operand has 101 places, 133 transitions, 854 flow. Second operand 6 states and 2192 transitions. [2023-08-27 12:35:48,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 241 transitions, 1820 flow [2023-08-27 12:35:48,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 241 transitions, 1818 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:35:48,640 INFO L231 Difference]: Finished difference. Result has 108 places, 139 transitions, 989 flow [2023-08-27 12:35:48,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=989, PETRI_PLACES=108, PETRI_TRANSITIONS=139} [2023-08-27 12:35:48,640 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2023-08-27 12:35:48,640 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 139 transitions, 989 flow [2023-08-27 12:35:48,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:35:48,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:35:48,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:35:48,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 12:35:48,641 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:35:48,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:35:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1747410696, now seen corresponding path program 1 times [2023-08-27 12:35:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:35:48,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812657200] [2023-08-27 12:35:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:35:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:35:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:35:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:35:48,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:35:48,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812657200] [2023-08-27 12:35:48,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812657200] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:35:48,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746930466] [2023-08-27 12:35:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:35:48,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:35:48,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:35:48,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:35:48,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 12:35:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:35:48,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 12:35:48,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:35:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:35:48,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:35:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746930466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:35:48,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:35:48,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-27 12:35:48,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802922247] [2023-08-27 12:35:48,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:35:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:35:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:35:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:35:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 12:35:48,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 956 [2023-08-27 12:35:48,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 139 transitions, 989 flow. Second operand has 4 states, 4 states have (on average 378.75) internal successors, (1515), 4 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:35:48,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:35:48,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 956 [2023-08-27 12:35:48,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:36:02,375 INFO L124 PetriNetUnfolderBase]: 102863/143482 cut-off events. [2023-08-27 12:36:02,375 INFO L125 PetriNetUnfolderBase]: For 47652/47652 co-relation queries the response was YES. [2023-08-27 12:36:03,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323316 conditions, 143482 events. 102863/143482 cut-off events. For 47652/47652 co-relation queries the response was YES. Maximal size of possible extension queue 4856. Compared 994895 event pairs, 86887 based on Foata normal form. 2208/82336 useless extension candidates. Maximal degree in co-relation 323285. Up to 143435 conditions per place. [2023-08-27 12:36:03,518 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 114 selfloop transitions, 23 changer transitions 0/137 dead transitions. [2023-08-27 12:36:03,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 137 transitions, 1249 flow [2023-08-27 12:36:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:36:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:36:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1560 transitions. [2023-08-27 12:36:03,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40794979079497906 [2023-08-27 12:36:03,520 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1560 transitions. [2023-08-27 12:36:03,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1560 transitions. [2023-08-27 12:36:03,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:36:03,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1560 transitions. [2023-08-27 12:36:03,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:03,524 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) [2023-08-27 12:36:03,525 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) [2023-08-27 12:36:03,525 INFO L175 Difference]: Start difference. First operand has 108 places, 139 transitions, 989 flow. Second operand 4 states and 1560 transitions. [2023-08-27 12:36:03,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 137 transitions, 1249 flow [2023-08-27 12:36:03,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 137 transitions, 1209 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 12:36:03,553 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 981 flow [2023-08-27 12:36:03,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=981, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2023-08-27 12:36:03,553 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2023-08-27 12:36:03,554 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 981 flow [2023-08-27 12:36:03,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 378.75) internal successors, (1515), 4 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:03,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:36:03,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:36:03,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 12:36:03,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:36:03,755 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:36:03,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:36:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1401316667, now seen corresponding path program 1 times [2023-08-27 12:36:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:36:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304682874] [2023-08-27 12:36:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:36:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:03,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:36:03,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304682874] [2023-08-27 12:36:03,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304682874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:36:03,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145665805] [2023-08-27 12:36:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:03,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:36:03,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:36:03,845 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:36:03,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 12:36:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:03,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 12:36:03,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:36:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:04,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:36:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:04,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145665805] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 12:36:04,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 12:36:04,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 11 [2023-08-27 12:36:04,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224814375] [2023-08-27 12:36:04,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:36:04,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:36:04,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:36:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:36:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-27 12:36:04,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 956 [2023-08-27 12:36:04,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 981 flow. Second operand has 5 states, 5 states have (on average 342.4) internal successors, (1712), 5 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:04,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:36:04,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 956 [2023-08-27 12:36:04,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:36:17,378 INFO L124 PetriNetUnfolderBase]: 101759/142378 cut-off events. [2023-08-27 12:36:17,378 INFO L125 PetriNetUnfolderBase]: For 34246/34246 co-relation queries the response was YES. [2023-08-27 12:36:18,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317800 conditions, 142378 events. 101759/142378 cut-off events. For 34246/34246 co-relation queries the response was YES. Maximal size of possible extension queue 4954. Compared 1022851 event pairs, 51285 based on Foata normal form. 1104/80128 useless extension candidates. Maximal degree in co-relation 317771. Up to 126472 conditions per place. [2023-08-27 12:36:18,521 INFO L140 encePairwiseOnDemand]: 950/956 looper letters, 179 selfloop transitions, 17 changer transitions 0/196 dead transitions. [2023-08-27 12:36:18,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 196 transitions, 1621 flow [2023-08-27 12:36:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:36:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:36:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1797 transitions. [2023-08-27 12:36:18,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37594142259414226 [2023-08-27 12:36:18,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1797 transitions. [2023-08-27 12:36:18,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1797 transitions. [2023-08-27 12:36:18,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:36:18,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1797 transitions. [2023-08-27 12:36:18,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 359.4) internal successors, (1797), 5 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:18,529 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) [2023-08-27 12:36:18,530 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) [2023-08-27 12:36:18,530 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 981 flow. Second operand 5 states and 1797 transitions. [2023-08-27 12:36:18,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 196 transitions, 1621 flow [2023-08-27 12:36:18,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 196 transitions, 1584 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 12:36:18,562 INFO L231 Difference]: Finished difference. Result has 107 places, 137 transitions, 990 flow [2023-08-27 12:36:18,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=990, PETRI_PLACES=107, PETRI_TRANSITIONS=137} [2023-08-27 12:36:18,562 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2023-08-27 12:36:18,562 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 137 transitions, 990 flow [2023-08-27 12:36:18,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 342.4) internal successors, (1712), 5 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:18,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:36:18,563 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:36:18,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 12:36:18,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:36:18,773 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:36:18,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:36:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash -537134016, now seen corresponding path program 1 times [2023-08-27 12:36:18,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:36:18,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652821720] [2023-08-27 12:36:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:18,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:36:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 12:36:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:36:18,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652821720] [2023-08-27 12:36:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652821720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:36:18,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:36:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 12:36:18,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191138381] [2023-08-27 12:36:18,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:36:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:36:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:36:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:36:18,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:36:18,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 956 [2023-08-27 12:36:18,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 137 transitions, 990 flow. Second operand has 5 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:18,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:36:18,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 956 [2023-08-27 12:36:18,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:36:27,350 INFO L124 PetriNetUnfolderBase]: 63228/89423 cut-off events. [2023-08-27 12:36:27,350 INFO L125 PetriNetUnfolderBase]: For 25682/25682 co-relation queries the response was YES. [2023-08-27 12:36:27,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205820 conditions, 89423 events. 63228/89423 cut-off events. For 25682/25682 co-relation queries the response was YES. Maximal size of possible extension queue 2931. Compared 608521 event pairs, 44242 based on Foata normal form. 802/51369 useless extension candidates. Maximal degree in co-relation 205791. Up to 69247 conditions per place. [2023-08-27 12:36:28,074 INFO L140 encePairwiseOnDemand]: 949/956 looper letters, 201 selfloop transitions, 21 changer transitions 0/222 dead transitions. [2023-08-27 12:36:28,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 222 transitions, 1751 flow [2023-08-27 12:36:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:36:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:36:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2183 transitions. [2023-08-27 12:36:28,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38057880055788007 [2023-08-27 12:36:28,077 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2183 transitions. [2023-08-27 12:36:28,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2183 transitions. [2023-08-27 12:36:28,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:36:28,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2183 transitions. [2023-08-27 12:36:28,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 363.8333333333333) internal successors, (2183), 6 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:28,083 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) [2023-08-27 12:36:28,084 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) [2023-08-27 12:36:28,084 INFO L175 Difference]: Start difference. First operand has 107 places, 137 transitions, 990 flow. Second operand 6 states and 2183 transitions. [2023-08-27 12:36:28,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 222 transitions, 1751 flow [2023-08-27 12:36:28,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 222 transitions, 1735 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:36:28,114 INFO L231 Difference]: Finished difference. Result has 112 places, 139 transitions, 1046 flow [2023-08-27 12:36:28,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1046, PETRI_PLACES=112, PETRI_TRANSITIONS=139} [2023-08-27 12:36:28,114 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 38 predicate places. [2023-08-27 12:36:28,114 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 139 transitions, 1046 flow [2023-08-27 12:36:28,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:28,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:36:28,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:36:28,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 12:36:28,115 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:36:28,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:36:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1163234043, now seen corresponding path program 1 times [2023-08-27 12:36:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:36:28,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161464015] [2023-08-27 12:36:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:28,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:36:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:36:28,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:36:28,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161464015] [2023-08-27 12:36:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161464015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:36:28,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:36:28,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:36:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35732630] [2023-08-27 12:36:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:36:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:36:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:36:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:36:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:36:28,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 956 [2023-08-27 12:36:28,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 139 transitions, 1046 flow. Second operand has 5 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:28,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:36:28,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 956 [2023-08-27 12:36:28,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:36:35,843 INFO L124 PetriNetUnfolderBase]: 55000/77755 cut-off events. [2023-08-27 12:36:35,843 INFO L125 PetriNetUnfolderBase]: For 36102/36102 co-relation queries the response was YES. [2023-08-27 12:36:36,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183322 conditions, 77755 events. 55000/77755 cut-off events. For 36102/36102 co-relation queries the response was YES. Maximal size of possible extension queue 2621. Compared 515392 event pairs, 43732 based on Foata normal form. 0/44947 useless extension candidates. Maximal degree in co-relation 183291. Up to 69247 conditions per place. [2023-08-27 12:36:36,634 INFO L140 encePairwiseOnDemand]: 943/956 looper letters, 189 selfloop transitions, 21 changer transitions 0/210 dead transitions. [2023-08-27 12:36:36,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 210 transitions, 1756 flow [2023-08-27 12:36:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:36:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:36:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2175 transitions. [2023-08-27 12:36:36,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37918410041841005 [2023-08-27 12:36:36,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2175 transitions. [2023-08-27 12:36:36,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2175 transitions. [2023-08-27 12:36:36,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:36:36,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2175 transitions. [2023-08-27 12:36:36,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 362.5) internal successors, (2175), 6 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:36,643 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) [2023-08-27 12:36:36,644 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) [2023-08-27 12:36:36,644 INFO L175 Difference]: Start difference. First operand has 112 places, 139 transitions, 1046 flow. Second operand 6 states and 2175 transitions. [2023-08-27 12:36:36,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 210 transitions, 1756 flow [2023-08-27 12:36:36,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 210 transitions, 1722 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 12:36:36,671 INFO L231 Difference]: Finished difference. Result has 115 places, 139 transitions, 1068 flow [2023-08-27 12:36:36,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1068, PETRI_PLACES=115, PETRI_TRANSITIONS=139} [2023-08-27 12:36:36,671 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2023-08-27 12:36:36,671 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 139 transitions, 1068 flow [2023-08-27 12:36:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:36,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:36:36,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:36:36,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 12:36:36,672 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:36:36,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:36:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1426762368, now seen corresponding path program 1 times [2023-08-27 12:36:36,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:36:36,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33153523] [2023-08-27 12:36:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:36,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:36:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:36:36,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:36:36,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33153523] [2023-08-27 12:36:36,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33153523] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:36:36,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508185899] [2023-08-27 12:36:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:36,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:36:36,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:36:36,781 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:36:36,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 12:36:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:36,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 12:36:36,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:36:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:36,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:36:36,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508185899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:36:36,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:36:36,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-27 12:36:36,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398755443] [2023-08-27 12:36:36,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:36:36,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:36:36,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:36:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:36:36,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 12:36:36,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 956 [2023-08-27 12:36:36,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 139 transitions, 1068 flow. Second operand has 4 states, 4 states have (on average 378.75) internal successors, (1515), 4 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:36,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:36:36,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 956 [2023-08-27 12:36:36,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:36:44,383 INFO L124 PetriNetUnfolderBase]: 54246/76657 cut-off events. [2023-08-27 12:36:44,383 INFO L125 PetriNetUnfolderBase]: For 42276/42276 co-relation queries the response was YES. [2023-08-27 12:36:44,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193837 conditions, 76657 events. 54246/76657 cut-off events. For 42276/42276 co-relation queries the response was YES. Maximal size of possible extension queue 2582. Compared 504798 event pairs, 46556 based on Foata normal form. 344/46593 useless extension candidates. Maximal degree in co-relation 193805. Up to 76645 conditions per place. [2023-08-27 12:36:45,210 INFO L140 encePairwiseOnDemand]: 953/956 looper letters, 126 selfloop transitions, 12 changer transitions 0/138 dead transitions. [2023-08-27 12:36:45,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 1335 flow [2023-08-27 12:36:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:36:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:36:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1559 transitions. [2023-08-27 12:36:45,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40768828451882844 [2023-08-27 12:36:45,212 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1559 transitions. [2023-08-27 12:36:45,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1559 transitions. [2023-08-27 12:36:45,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:36:45,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1559 transitions. [2023-08-27 12:36:45,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.75) internal successors, (1559), 4 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:45,215 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) [2023-08-27 12:36:45,215 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) [2023-08-27 12:36:45,215 INFO L175 Difference]: Start difference. First operand has 115 places, 139 transitions, 1068 flow. Second operand 4 states and 1559 transitions. [2023-08-27 12:36:45,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 1335 flow [2023-08-27 12:36:45,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 1269 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 12:36:45,504 INFO L231 Difference]: Finished difference. Result has 111 places, 138 transitions, 1017 flow [2023-08-27 12:36:45,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1017, PETRI_PLACES=111, PETRI_TRANSITIONS=138} [2023-08-27 12:36:45,504 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 37 predicate places. [2023-08-27 12:36:45,504 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 138 transitions, 1017 flow [2023-08-27 12:36:45,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 378.75) internal successors, (1515), 4 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:45,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:36:45,505 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:36:45,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 12:36:45,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 12:36:45,706 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:36:45,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:36:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1726210320, now seen corresponding path program 1 times [2023-08-27 12:36:45,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:36:45,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112566263] [2023-08-27 12:36:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:45,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:36:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:45,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:36:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112566263] [2023-08-27 12:36:45,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112566263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:36:45,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:36:45,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:36:45,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258370090] [2023-08-27 12:36:45,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:36:45,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:36:45,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:36:45,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:36:45,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:36:45,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 956 [2023-08-27 12:36:45,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 138 transitions, 1017 flow. Second operand has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:45,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:36:45,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 956 [2023-08-27 12:36:45,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:36:52,872 INFO L124 PetriNetUnfolderBase]: 46442/65201 cut-off events. [2023-08-27 12:36:52,872 INFO L125 PetriNetUnfolderBase]: For 24052/24052 co-relation queries the response was YES. [2023-08-27 12:36:53,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162003 conditions, 65201 events. 46442/65201 cut-off events. For 24052/24052 co-relation queries the response was YES. Maximal size of possible extension queue 2366. Compared 416674 event pairs, 38844 based on Foata normal form. 0/38653 useless extension candidates. Maximal degree in co-relation 161972. Up to 63401 conditions per place. [2023-08-27 12:36:53,413 INFO L140 encePairwiseOnDemand]: 951/956 looper letters, 207 selfloop transitions, 4 changer transitions 0/211 dead transitions. [2023-08-27 12:36:53,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 211 transitions, 1813 flow [2023-08-27 12:36:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:36:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:36:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1817 transitions. [2023-08-27 12:36:53,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3801255230125523 [2023-08-27 12:36:53,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1817 transitions. [2023-08-27 12:36:53,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1817 transitions. [2023-08-27 12:36:53,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:36:53,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1817 transitions. [2023-08-27 12:36:53,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 363.4) internal successors, (1817), 5 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:53,421 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) [2023-08-27 12:36:53,421 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) [2023-08-27 12:36:53,421 INFO L175 Difference]: Start difference. First operand has 111 places, 138 transitions, 1017 flow. Second operand 5 states and 1817 transitions. [2023-08-27 12:36:53,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 211 transitions, 1813 flow [2023-08-27 12:36:53,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 211 transitions, 1800 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:36:53,659 INFO L231 Difference]: Finished difference. Result has 115 places, 139 transitions, 1023 flow [2023-08-27 12:36:53,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=115, PETRI_TRANSITIONS=139} [2023-08-27 12:36:53,659 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2023-08-27 12:36:53,659 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 139 transitions, 1023 flow [2023-08-27 12:36:53,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:53,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:36:53,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:36:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 12:36:53,660 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:36:53,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:36:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1664844992, now seen corresponding path program 1 times [2023-08-27 12:36:53,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:36:53,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771243923] [2023-08-27 12:36:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:53,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:36:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:36:53,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771243923] [2023-08-27 12:36:53,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771243923] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:36:53,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:36:53,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:36:53,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145339712] [2023-08-27 12:36:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:36:53,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:36:53,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:36:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:36:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:36:53,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 956 [2023-08-27 12:36:53,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 139 transitions, 1023 flow. Second operand has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:53,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:36:53,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 956 [2023-08-27 12:36:53,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:36:58,786 INFO L124 PetriNetUnfolderBase]: 33019/46988 cut-off events. [2023-08-27 12:36:58,786 INFO L125 PetriNetUnfolderBase]: For 22335/22335 co-relation queries the response was YES. [2023-08-27 12:36:59,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118425 conditions, 46988 events. 33019/46988 cut-off events. For 22335/22335 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 297349 event pairs, 23203 based on Foata normal form. 958/31966 useless extension candidates. Maximal degree in co-relation 118392. Up to 32656 conditions per place. [2023-08-27 12:36:59,121 INFO L140 encePairwiseOnDemand]: 946/956 looper letters, 189 selfloop transitions, 32 changer transitions 0/221 dead transitions. [2023-08-27 12:36:59,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 221 transitions, 1776 flow [2023-08-27 12:36:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:36:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:36:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1846 transitions. [2023-08-27 12:36:59,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861924686192469 [2023-08-27 12:36:59,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1846 transitions. [2023-08-27 12:36:59,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1846 transitions. [2023-08-27 12:36:59,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:36:59,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1846 transitions. [2023-08-27 12:36:59,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 369.2) internal successors, (1846), 5 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:59,127 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) [2023-08-27 12:36:59,127 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) [2023-08-27 12:36:59,127 INFO L175 Difference]: Start difference. First operand has 115 places, 139 transitions, 1023 flow. Second operand 5 states and 1846 transitions. [2023-08-27 12:36:59,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 221 transitions, 1776 flow [2023-08-27 12:36:59,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 221 transitions, 1771 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:36:59,181 INFO L231 Difference]: Finished difference. Result has 119 places, 141 transitions, 1117 flow [2023-08-27 12:36:59,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1117, PETRI_PLACES=119, PETRI_TRANSITIONS=141} [2023-08-27 12:36:59,181 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 45 predicate places. [2023-08-27 12:36:59,182 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 141 transitions, 1117 flow [2023-08-27 12:36:59,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:59,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:36:59,182 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:36:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 12:36:59,182 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:36:59,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:36:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash -920862295, now seen corresponding path program 1 times [2023-08-27 12:36:59,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:36:59,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550455589] [2023-08-27 12:36:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:59,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:36:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:59,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:36:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550455589] [2023-08-27 12:36:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550455589] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:36:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401507577] [2023-08-27 12:36:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:36:59,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:36:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:36:59,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:36:59,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 12:36:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:36:59,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 12:36:59,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:36:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:59,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:36:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:36:59,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401507577] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:36:59,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:36:59,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-08-27 12:36:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669113241] [2023-08-27 12:36:59,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:36:59,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 12:36:59,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:36:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 12:36:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-08-27 12:36:59,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 956 [2023-08-27 12:36:59,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 141 transitions, 1117 flow. Second operand has 16 states, 16 states have (on average 334.875) internal successors, (5358), 16 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:36:59,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:36:59,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 956 [2023-08-27 12:36:59,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:37:13,865 INFO L124 PetriNetUnfolderBase]: 89908/128485 cut-off events. [2023-08-27 12:37:13,865 INFO L125 PetriNetUnfolderBase]: For 82273/82273 co-relation queries the response was YES. [2023-08-27 12:37:14,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348202 conditions, 128485 events. 89908/128485 cut-off events. For 82273/82273 co-relation queries the response was YES. Maximal size of possible extension queue 4369. Compared 958868 event pairs, 28425 based on Foata normal form. 1650/87205 useless extension candidates. Maximal degree in co-relation 348168. Up to 41854 conditions per place. [2023-08-27 12:37:15,035 INFO L140 encePairwiseOnDemand]: 944/956 looper letters, 529 selfloop transitions, 50 changer transitions 0/579 dead transitions. [2023-08-27 12:37:15,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 579 transitions, 4357 flow [2023-08-27 12:37:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 12:37:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 12:37:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 8057 transitions. [2023-08-27 12:37:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664271420774968 [2023-08-27 12:37:15,042 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 8057 transitions. [2023-08-27 12:37:15,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 8057 transitions. [2023-08-27 12:37:15,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:37:15,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 8057 transitions. [2023-08-27 12:37:15,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 350.30434782608694) internal successors, (8057), 23 states have internal predecessors, (8057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:37:15,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 956.0) internal successors, (22944), 24 states have internal predecessors, (22944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:37:15,067 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 956.0) internal successors, (22944), 24 states have internal predecessors, (22944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:37:15,067 INFO L175 Difference]: Start difference. First operand has 119 places, 141 transitions, 1117 flow. Second operand 23 states and 8057 transitions. [2023-08-27 12:37:15,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 579 transitions, 4357 flow [2023-08-27 12:37:15,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 579 transitions, 4264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:37:15,978 INFO L231 Difference]: Finished difference. Result has 146 places, 162 transitions, 1427 flow [2023-08-27 12:37:15,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=956, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1427, PETRI_PLACES=146, PETRI_TRANSITIONS=162} [2023-08-27 12:37:15,979 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 72 predicate places. [2023-08-27 12:37:15,979 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 162 transitions, 1427 flow [2023-08-27 12:37:15,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 334.875) internal successors, (5358), 16 states have internal predecessors, (5358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:37:15,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:37:15,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:37:15,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 12:37:16,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 12:37:16,182 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 67 more)] === [2023-08-27 12:37:16,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:37:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash -921141855, now seen corresponding path program 1 times [2023-08-27 12:37:16,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:37:16,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408803074] [2023-08-27 12:37:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:37:16,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:37:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:37:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:37:16,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:37:16,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408803074] [2023-08-27 12:37:16,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408803074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:37:16,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288176358] [2023-08-27 12:37:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:37:16,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:37:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:37:16,533 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:37:16,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 12:37:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:37:16,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 12:37:16,719 INFO L285 TraceCheckSpWp]: Computing forward predicates...