/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:48:55,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:48:55,905 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 23:48:55,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:48:55,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:48:55,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:48:55,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:48:55,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:48:55,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:48:55,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:48:55,942 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:48:55,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:48:55,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:48:55,944 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:48:55,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:48:55,944 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:48:55,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:48:55,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:48:55,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:48:55,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:48:55,945 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:48:55,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:48:55,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:48:55,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:48:55,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:48:55,946 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:48:55,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:48:55,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:48:55,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:48:55,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:48:55,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:48:55,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:48:55,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:48:55,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:48:55,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:48:55,948 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:48:56,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:48:56,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:48:56,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:48:56,208 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:48:56,208 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:48:56,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-26 23:48:57,230 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:48:57,406 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:48:57,406 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-26 23:48:57,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8463a285/0080269c8d984e7eb84fc47782870f46/FLAGac610c4b2 [2023-08-26 23:48:57,422 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8463a285/0080269c8d984e7eb84fc47782870f46 [2023-08-26 23:48:57,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:48:57,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:48:57,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:48:57,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:48:57,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:48:57,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb032db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57, skipping insertion in model container [2023-08-26 23:48:57,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,445 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:48:57,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:48:57,599 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:48:57,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:48:57,654 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:48:57,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57 WrapperNode [2023-08-26 23:48:57,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:48:57,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:48:57,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:48:57,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:48:57,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,712 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 22, calls inlined = 30, statements flattened = 500 [2023-08-26 23:48:57,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:48:57,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:48:57,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:48:57,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:48:57,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:48:57,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:48:57,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:48:57,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:48:57,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (1/1) ... [2023-08-26 23:48:57,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:48:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:48:57,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 23:48:57,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 23:48:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:48:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:48:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:48:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 23:48:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 23:48:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 23:48:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 23:48:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 23:48:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:48:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 23:48:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:48:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:48:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:48:57,846 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 23:48:57,924 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:48:57,925 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:48:58,532 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:48:58,544 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:48:58,544 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 23:48:58,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:48:58 BoogieIcfgContainer [2023-08-26 23:48:58,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:48:58,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:48:58,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:48:58,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:48:58,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:48:57" (1/3) ... [2023-08-26 23:48:58,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770be4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:48:58, skipping insertion in model container [2023-08-26 23:48:58,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:48:57" (2/3) ... [2023-08-26 23:48:58,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770be4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:48:58, skipping insertion in model container [2023-08-26 23:48:58,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:48:58" (3/3) ... [2023-08-26 23:48:58,554 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-08-26 23:48:58,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:48:58,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-08-26 23:48:58,566 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:48:58,709 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 23:48:58,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 578 places, 632 transitions, 1280 flow [2023-08-26 23:48:58,898 INFO L124 PetriNetUnfolderBase]: 61/630 cut-off events. [2023-08-26 23:48:58,899 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 23:48:58,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 630 events. 61/630 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2183 event pairs, 0 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2023-08-26 23:48:58,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 578 places, 632 transitions, 1280 flow [2023-08-26 23:48:58,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 567 places, 621 transitions, 1254 flow [2023-08-26 23:48:58,920 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:48:58,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 567 places, 621 transitions, 1254 flow [2023-08-26 23:48:58,928 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 567 places, 621 transitions, 1254 flow [2023-08-26 23:48:58,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 567 places, 621 transitions, 1254 flow [2023-08-26 23:48:59,025 INFO L124 PetriNetUnfolderBase]: 61/621 cut-off events. [2023-08-26 23:48:59,025 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 23:48:59,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 621 events. 61/621 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2141 event pairs, 0 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2023-08-26 23:48:59,092 INFO L119 LiptonReduction]: Number of co-enabled transitions 105228 [2023-08-26 23:49:32,328 INFO L134 LiptonReduction]: Checked pairs total: 102639 [2023-08-26 23:49:32,329 INFO L136 LiptonReduction]: Total number of compositions: 844 [2023-08-26 23:49:32,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:49:32,352 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;@5e03314, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:49:32,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-08-26 23:49:32,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:49:32,360 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 23:49:32,360 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:49:32,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:32,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 23:49:32,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:32,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash 90233, now seen corresponding path program 1 times [2023-08-26 23:49:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:32,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766728191] [2023-08-26 23:49:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:32,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:49:32,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766728191] [2023-08-26 23:49:32,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766728191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:32,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:32,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:49:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227028646] [2023-08-26 23:49:32,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:32,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:32,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:32,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 1476 [2023-08-26 23:49:32,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:32,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:32,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 1476 [2023-08-26 23:49:32,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:32,982 INFO L124 PetriNetUnfolderBase]: 1275/2064 cut-off events. [2023-08-26 23:49:32,982 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-26 23:49:32,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 2064 events. 1275/2064 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10342 event pairs, 1047 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 4030. Up to 2062 conditions per place. [2023-08-26 23:49:32,991 INFO L140 encePairwiseOnDemand]: 1454/1476 looper letters, 59 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2023-08-26 23:49:32,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 268 flow [2023-08-26 23:49:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1833 transitions. [2023-08-26 23:49:33,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41395663956639567 [2023-08-26 23:49:33,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1833 transitions. [2023-08-26 23:49:33,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1833 transitions. [2023-08-26 23:49:33,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:33,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1833 transitions. [2023-08-26 23:49:33,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 611.0) internal successors, (1833), 3 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,028 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 158 flow. Second operand 3 states and 1833 transitions. [2023-08-26 23:49:33,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 268 flow [2023-08-26 23:49:33,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 260 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 23:49:33,034 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 168 flow [2023-08-26 23:49:33,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2023-08-26 23:49:33,037 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-08-26 23:49:33,037 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 168 flow [2023-08-26 23:49:33,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:33,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:49:33,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:49:33,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:33,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:33,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2803540, now seen corresponding path program 1 times [2023-08-26 23:49:33,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:33,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888497760] [2023-08-26 23:49:33,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:33,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:49:33,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:33,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888497760] [2023-08-26 23:49:33,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888497760] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:33,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025686821] [2023-08-26 23:49:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:33,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:33,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:33,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:49:33,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 23:49:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:33,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:49:33,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:49:33,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:49:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:49:33,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025686821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:49:33,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:49:33,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 23:49:33,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546782469] [2023-08-26 23:49:33,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:49:33,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:49:33,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:33,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:49:33,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:49:33,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 1476 [2023-08-26 23:49:33,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 585.1428571428571) internal successors, (4096), 7 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:33,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 1476 [2023-08-26 23:49:33,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:33,769 INFO L124 PetriNetUnfolderBase]: 1287/2082 cut-off events. [2023-08-26 23:49:33,769 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 23:49:33,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4233 conditions, 2082 events. 1287/2082 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10210 event pairs, 1047 based on Foata normal form. 0/851 useless extension candidates. Maximal degree in co-relation 4128. Up to 2063 conditions per place. [2023-08-26 23:49:33,776 INFO L140 encePairwiseOnDemand]: 1467/1476 looper letters, 57 selfloop transitions, 25 changer transitions 0/82 dead transitions. [2023-08-26 23:49:33,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 410 flow [2023-08-26 23:49:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:49:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:49:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4176 transitions. [2023-08-26 23:49:33,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40418118466898956 [2023-08-26 23:49:33,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4176 transitions. [2023-08-26 23:49:33,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4176 transitions. [2023-08-26 23:49:33,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:33,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4176 transitions. [2023-08-26 23:49:33,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 596.5714285714286) internal successors, (4176), 7 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1476.0) internal successors, (11808), 8 states have internal predecessors, (11808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,808 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1476.0) internal successors, (11808), 8 states have internal predecessors, (11808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,808 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 168 flow. Second operand 7 states and 4176 transitions. [2023-08-26 23:49:33,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 410 flow [2023-08-26 23:49:33,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:49:33,813 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 322 flow [2023-08-26 23:49:33,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-08-26 23:49:33,818 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-26 23:49:33,818 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 322 flow [2023-08-26 23:49:33,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 585.1428571428571) internal successors, (4096), 7 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:33,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:33,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-26 23:49:33,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 23:49:34,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:34,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:34,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash 86916025, now seen corresponding path program 1 times [2023-08-26 23:49:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:34,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918810813] [2023-08-26 23:49:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:49:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918810813] [2023-08-26 23:49:34,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918810813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:34,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:34,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:49:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121528407] [2023-08-26 23:49:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:34,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:34,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 1476 [2023-08-26 23:49:34,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 585.3333333333334) internal successors, (1756), 3 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:34,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 1476 [2023-08-26 23:49:34,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:34,378 INFO L124 PetriNetUnfolderBase]: 1281/2074 cut-off events. [2023-08-26 23:49:34,378 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 23:49:34,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4242 conditions, 2074 events. 1281/2074 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10329 event pairs, 1047 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 4177. Up to 2057 conditions per place. [2023-08-26 23:49:34,386 INFO L140 encePairwiseOnDemand]: 1472/1476 looper letters, 68 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-08-26 23:49:34,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 416 flow [2023-08-26 23:49:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1812 transitions. [2023-08-26 23:49:34,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2023-08-26 23:49:34,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1812 transitions. [2023-08-26 23:49:34,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1812 transitions. [2023-08-26 23:49:34,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:34,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1812 transitions. [2023-08-26 23:49:34,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 604.0) internal successors, (1812), 3 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) [2023-08-26 23:49:34,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,399 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 322 flow. Second operand 3 states and 1812 transitions. [2023-08-26 23:49:34,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 416 flow [2023-08-26 23:49:34,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 390 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:34,402 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 254 flow [2023-08-26 23:49:34,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2023-08-26 23:49:34,402 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-08-26 23:49:34,403 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 254 flow [2023-08-26 23:49:34,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 585.3333333333334) internal successors, (1756), 3 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:34,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 23:49:34,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 23:49:34,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:34,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:34,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1597312239, now seen corresponding path program 1 times [2023-08-26 23:49:34,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:34,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707598561] [2023-08-26 23:49:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:34,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:49:34,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:34,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707598561] [2023-08-26 23:49:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707598561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:34,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:34,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:49:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278614591] [2023-08-26 23:49:34,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:34,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 578 out of 1476 [2023-08-26 23:49:34,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 579.6666666666666) internal successors, (1739), 3 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:34,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 578 of 1476 [2023-08-26 23:49:34,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:34,749 INFO L124 PetriNetUnfolderBase]: 1279/2072 cut-off events. [2023-08-26 23:49:34,749 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-26 23:49:34,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 2072 events. 1279/2072 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 10366 event pairs, 1047 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 4166. Up to 2068 conditions per place. [2023-08-26 23:49:34,757 INFO L140 encePairwiseOnDemand]: 1471/1476 looper letters, 65 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2023-08-26 23:49:34,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 387 flow [2023-08-26 23:49:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1796 transitions. [2023-08-26 23:49:34,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056007226738934 [2023-08-26 23:49:34,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1796 transitions. [2023-08-26 23:49:34,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1796 transitions. [2023-08-26 23:49:34,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:34,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1796 transitions. [2023-08-26 23:49:34,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 598.6666666666666) internal successors, (1796), 3 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,770 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 254 flow. Second operand 3 states and 1796 transitions. [2023-08-26 23:49:34,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 387 flow [2023-08-26 23:49:34,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:49:34,774 INFO L231 Difference]: Finished difference. Result has 64 places, 72 transitions, 247 flow [2023-08-26 23:49:34,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=64, PETRI_TRANSITIONS=72} [2023-08-26 23:49:34,775 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-08-26 23:49:34,775 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 72 transitions, 247 flow [2023-08-26 23:49:34,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 579.6666666666666) internal successors, (1739), 3 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:34,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:34,776 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-26 23:49:34,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 23:49:34,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:34,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1922123514, now seen corresponding path program 2 times [2023-08-26 23:49:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:34,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251516103] [2023-08-26 23:49:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:34,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:49:34,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:34,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251516103] [2023-08-26 23:49:34,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251516103] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:34,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289438365] [2023-08-26 23:49:34,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:49:34,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:34,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:34,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:49:34,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 23:49:35,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:49:35,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:49:35,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:49:35,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:49:35,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:49:35,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289438365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:35,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:49:35,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-26 23:49:35,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125460723] [2023-08-26 23:49:35,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:35,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:35,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:35,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:35,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:49:35,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1476 [2023-08-26 23:49:35,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:35,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:35,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1476 [2023-08-26 23:49:35,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:35,297 INFO L124 PetriNetUnfolderBase]: 1279/2070 cut-off events. [2023-08-26 23:49:35,298 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 23:49:35,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4217 conditions, 2070 events. 1279/2070 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 10352 event pairs, 1047 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 4168. Up to 2070 conditions per place. [2023-08-26 23:49:35,305 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 69 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-08-26 23:49:35,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 70 transitions, 367 flow [2023-08-26 23:49:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1822 transitions. [2023-08-26 23:49:35,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114724480578139 [2023-08-26 23:49:35,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1822 transitions. [2023-08-26 23:49:35,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1822 transitions. [2023-08-26 23:49:35,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:35,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1822 transitions. [2023-08-26 23:49:35,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 607.3333333333334) internal successors, (1822), 3 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:35,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:35,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:35,317 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 247 flow. Second operand 3 states and 1822 transitions. [2023-08-26 23:49:35,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 70 transitions, 367 flow [2023-08-26 23:49:35,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 322 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-26 23:49:35,319 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 184 flow [2023-08-26 23:49:35,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=58, PETRI_TRANSITIONS=70} [2023-08-26 23:49:35,319 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2023-08-26 23:49:35,319 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 184 flow [2023-08-26 23:49:35,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:35,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:35,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:35,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 23:49:35,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:35,527 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:35,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash -442591527, now seen corresponding path program 1 times [2023-08-26 23:49:35,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:35,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78621280] [2023-08-26 23:49:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:35,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:49:35,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78621280] [2023-08-26 23:49:35,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78621280] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065899607] [2023-08-26 23:49:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:35,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:35,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:35,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:49:35,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 23:49:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:35,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:49:35,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:49:35,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:49:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:49:35,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065899607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:49:35,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:49:35,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-26 23:49:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448663318] [2023-08-26 23:49:35,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:49:35,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 23:49:35,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 23:49:35,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:49:35,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 578 out of 1476 [2023-08-26 23:49:35,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 184 flow. Second operand has 8 states, 8 states have (on average 579.625) internal successors, (4637), 8 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:35,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:35,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 578 of 1476 [2023-08-26 23:49:35,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:36,124 INFO L124 PetriNetUnfolderBase]: 1273/2064 cut-off events. [2023-08-26 23:49:36,124 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 23:49:36,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 2064 events. 1273/2064 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 10304 event pairs, 1047 based on Foata normal form. 0/846 useless extension candidates. Maximal degree in co-relation 4164. Up to 2057 conditions per place. [2023-08-26 23:49:36,134 INFO L140 encePairwiseOnDemand]: 1471/1476 looper letters, 54 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2023-08-26 23:49:36,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 288 flow [2023-08-26 23:49:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:49:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:49:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3538 transitions. [2023-08-26 23:49:36,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39950316169828365 [2023-08-26 23:49:36,140 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3538 transitions. [2023-08-26 23:49:36,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3538 transitions. [2023-08-26 23:49:36,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:36,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3538 transitions. [2023-08-26 23:49:36,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 589.6666666666666) internal successors, (3538), 6 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1476.0) internal successors, (10332), 7 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1476.0) internal successors, (10332), 7 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,154 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 184 flow. Second operand 6 states and 3538 transitions. [2023-08-26 23:49:36,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 288 flow [2023-08-26 23:49:36,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:36,157 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 179 flow [2023-08-26 23:49:36,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2023-08-26 23:49:36,159 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2023-08-26 23:49:36,159 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 179 flow [2023-08-26 23:49:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 579.625) internal successors, (4637), 8 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-08-26 23:49:36,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 23:49:36,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:36,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:36,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:36,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1689923790, now seen corresponding path program 2 times [2023-08-26 23:49:36,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:36,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763492443] [2023-08-26 23:49:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:36,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:49:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763492443] [2023-08-26 23:49:36,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763492443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:36,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882472754] [2023-08-26 23:49:36,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:49:36,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:36,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:36,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:49:36,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 23:49:36,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:49:36,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:49:36,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:49:36,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-26 23:49:36,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:49:36,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882472754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:36,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:49:36,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-26 23:49:36,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587665954] [2023-08-26 23:49:36,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:36,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:36,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:49:36,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 596 out of 1476 [2023-08-26 23:49:36,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:36,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 596 of 1476 [2023-08-26 23:49:36,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:36,864 INFO L124 PetriNetUnfolderBase]: 1147/1858 cut-off events. [2023-08-26 23:49:36,864 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 23:49:36,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 1858 events. 1147/1858 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8991 event pairs, 933 based on Foata normal form. 0/781 useless extension candidates. Maximal degree in co-relation 3760. Up to 1858 conditions per place. [2023-08-26 23:49:36,870 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 61 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-26 23:49:36,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 299 flow [2023-08-26 23:49:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1844 transitions. [2023-08-26 23:49:36,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164408310749774 [2023-08-26 23:49:36,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1844 transitions. [2023-08-26 23:49:36,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1844 transitions. [2023-08-26 23:49:36,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:36,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1844 transitions. [2023-08-26 23:49:36,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 614.6666666666666) internal successors, (1844), 3 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,882 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 179 flow. Second operand 3 states and 1844 transitions. [2023-08-26 23:49:36,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 299 flow [2023-08-26 23:49:36,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 279 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 23:49:36,883 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 157 flow [2023-08-26 23:49:36,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-08-26 23:49:36,884 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -15 predicate places. [2023-08-26 23:49:36,884 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 157 flow [2023-08-26 23:49:36,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:36,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:36,884 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-08-26 23:49:36,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 23:49:37,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:37,090 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:37,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1689923789, now seen corresponding path program 1 times [2023-08-26 23:49:37,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:37,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796381383] [2023-08-26 23:49:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:37,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:49:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:37,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796381383] [2023-08-26 23:49:37,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796381383] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:37,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897254847] [2023-08-26 23:49:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:37,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:37,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:37,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:49:37,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 23:49:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:37,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:49:37,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:49:37,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:49:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:49:37,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897254847] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:49:37,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:49:37,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-26 23:49:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488663405] [2023-08-26 23:49:37,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:49:37,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 23:49:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:37,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 23:49:37,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-26 23:49:37,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 578 out of 1476 [2023-08-26 23:49:37,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 157 flow. Second operand has 17 states, 17 states have (on average 579.2941176470588) internal successors, (9848), 17 states have internal predecessors, (9848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:37,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:37,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 578 of 1476 [2023-08-26 23:49:37,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:37,839 INFO L124 PetriNetUnfolderBase]: 1147/1860 cut-off events. [2023-08-26 23:49:37,839 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 23:49:37,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3766 conditions, 1860 events. 1147/1860 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9028 event pairs, 933 based on Foata normal form. 0/782 useless extension candidates. Maximal degree in co-relation 3757. Up to 1851 conditions per place. [2023-08-26 23:49:37,843 INFO L140 encePairwiseOnDemand]: 1471/1476 looper letters, 52 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2023-08-26 23:49:37,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 293 flow [2023-08-26 23:49:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:49:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:49:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4112 transitions. [2023-08-26 23:49:37,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979868370112273 [2023-08-26 23:49:37,852 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4112 transitions. [2023-08-26 23:49:37,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4112 transitions. [2023-08-26 23:49:37,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:37,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4112 transitions. [2023-08-26 23:49:37,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 587.4285714285714) internal successors, (4112), 7 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:37,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1476.0) internal successors, (11808), 8 states have internal predecessors, (11808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:37,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1476.0) internal successors, (11808), 8 states have internal predecessors, (11808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:37,867 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 157 flow. Second operand 7 states and 4112 transitions. [2023-08-26 23:49:37,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 293 flow [2023-08-26 23:49:37,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:37,868 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 198 flow [2023-08-26 23:49:37,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2023-08-26 23:49:37,869 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2023-08-26 23:49:37,869 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 198 flow [2023-08-26 23:49:37,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 579.2941176470588) internal successors, (9848), 17 states have internal predecessors, (9848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:37,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:37,870 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-08-26 23:49:37,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-26 23:49:38,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:38,077 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:38,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1922787556, now seen corresponding path program 1 times [2023-08-26 23:49:38,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:38,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921222498] [2023-08-26 23:49:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:38,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:38,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:38,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921222498] [2023-08-26 23:49:38,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921222498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:38,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:38,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:49:38,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413761067] [2023-08-26 23:49:38,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:38,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:38,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:38,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:38,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 596 out of 1476 [2023-08-26 23:49:38,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:38,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 596 of 1476 [2023-08-26 23:49:38,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:38,370 INFO L124 PetriNetUnfolderBase]: 1027/1664 cut-off events. [2023-08-26 23:49:38,370 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 23:49:38,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 1664 events. 1027/1664 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7903 event pairs, 825 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 3380. Up to 1664 conditions per place. [2023-08-26 23:49:38,375 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 61 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-26 23:49:38,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 318 flow [2023-08-26 23:49:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1842 transitions. [2023-08-26 23:49:38,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159891598915989 [2023-08-26 23:49:38,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1842 transitions. [2023-08-26 23:49:38,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1842 transitions. [2023-08-26 23:49:38,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:38,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1842 transitions. [2023-08-26 23:49:38,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 614.0) internal successors, (1842), 3 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,385 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 198 flow. Second operand 3 states and 1842 transitions. [2023-08-26 23:49:38,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 318 flow [2023-08-26 23:49:38,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 298 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-26 23:49:38,386 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 176 flow [2023-08-26 23:49:38,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-08-26 23:49:38,387 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-08-26 23:49:38,387 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 176 flow [2023-08-26 23:49:38,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:38,387 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-08-26 23:49:38,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 23:49:38,387 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:38,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1922787560, now seen corresponding path program 2 times [2023-08-26 23:49:38,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:38,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238049256] [2023-08-26 23:49:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:38,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238049256] [2023-08-26 23:49:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238049256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:38,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:38,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:49:38,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858479087] [2023-08-26 23:49:38,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:38,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:38,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 596 out of 1476 [2023-08-26 23:49:38,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:38,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 596 of 1476 [2023-08-26 23:49:38,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:38,641 INFO L124 PetriNetUnfolderBase]: 913/1478 cut-off events. [2023-08-26 23:49:38,641 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 23:49:38,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 1478 events. 913/1478 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6800 event pairs, 723 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 2998. Up to 1478 conditions per place. [2023-08-26 23:49:38,645 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-26 23:49:38,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 292 flow [2023-08-26 23:49:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1840 transitions. [2023-08-26 23:49:38,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41553748870822044 [2023-08-26 23:49:38,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1840 transitions. [2023-08-26 23:49:38,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1840 transitions. [2023-08-26 23:49:38,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:38,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1840 transitions. [2023-08-26 23:49:38,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 613.3333333333334) internal successors, (1840), 3 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,655 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 176 flow. Second operand 3 states and 1840 transitions. [2023-08-26 23:49:38,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 292 flow [2023-08-26 23:49:38,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:38,656 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 173 flow [2023-08-26 23:49:38,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-08-26 23:49:38,656 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2023-08-26 23:49:38,656 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 173 flow [2023-08-26 23:49:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:38,657 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-08-26 23:49:38,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 23:49:38,657 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:38,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1922787589, now seen corresponding path program 1 times [2023-08-26 23:49:38,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:38,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236296358] [2023-08-26 23:49:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:38,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:38,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:38,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236296358] [2023-08-26 23:49:38,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236296358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:38,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:38,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:49:38,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112693802] [2023-08-26 23:49:38,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:38,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:38,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:38,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 596 out of 1476 [2023-08-26 23:49:38,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:38,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 596 of 1476 [2023-08-26 23:49:38,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:38,867 INFO L124 PetriNetUnfolderBase]: 805/1302 cut-off events. [2023-08-26 23:49:38,867 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 23:49:38,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 1302 events. 805/1302 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5756 event pairs, 627 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 2645. Up to 1302 conditions per place. [2023-08-26 23:49:38,871 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 57 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-26 23:49:38,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 285 flow [2023-08-26 23:49:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1838 transitions. [2023-08-26 23:49:38,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150858175248419 [2023-08-26 23:49:38,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1838 transitions. [2023-08-26 23:49:38,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1838 transitions. [2023-08-26 23:49:38,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:38,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1838 transitions. [2023-08-26 23:49:38,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 612.6666666666666) internal successors, (1838), 3 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,880 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 173 flow. Second operand 3 states and 1838 transitions. [2023-08-26 23:49:38,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 285 flow [2023-08-26 23:49:38,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:38,881 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 170 flow [2023-08-26 23:49:38,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2023-08-26 23:49:38,881 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -15 predicate places. [2023-08-26 23:49:38,881 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 170 flow [2023-08-26 23:49:38,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:38,882 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:38,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:49:38,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:38,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:38,882 INFO L85 PathProgramCache]: Analyzing trace with hash 523129073, now seen corresponding path program 1 times [2023-08-26 23:49:38,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207945281] [2023-08-26 23:49:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:38,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207945281] [2023-08-26 23:49:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207945281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:49:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015900301] [2023-08-26 23:49:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:38,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:38,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:38,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:38,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 1476 [2023-08-26 23:49:38,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 577.6666666666666) internal successors, (1733), 3 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:38,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 1476 [2023-08-26 23:49:38,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:39,223 INFO L124 PetriNetUnfolderBase]: 1211/1950 cut-off events. [2023-08-26 23:49:39,223 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 23:49:39,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 1950 events. 1211/1950 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8899 event pairs, 627 based on Foata normal form. 0/981 useless extension candidates. Maximal degree in co-relation 3951. Up to 1303 conditions per place. [2023-08-26 23:49:39,229 INFO L140 encePairwiseOnDemand]: 1464/1476 looper letters, 86 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-26 23:49:39,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 88 transitions, 409 flow [2023-08-26 23:49:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1813 transitions. [2023-08-26 23:49:39,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094399277326107 [2023-08-26 23:49:39,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1813 transitions. [2023-08-26 23:49:39,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1813 transitions. [2023-08-26 23:49:39,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:39,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1813 transitions. [2023-08-26 23:49:39,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 604.3333333333334) internal successors, (1813), 3 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,237 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 170 flow. Second operand 3 states and 1813 transitions. [2023-08-26 23:49:39,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 88 transitions, 409 flow [2023-08-26 23:49:39,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:39,239 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 199 flow [2023-08-26 23:49:39,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-08-26 23:49:39,239 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-08-26 23:49:39,239 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 199 flow [2023-08-26 23:49:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 577.6666666666666) internal successors, (1733), 3 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:39,240 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:39,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 23:49:39,240 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:39,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash 209387605, now seen corresponding path program 1 times [2023-08-26 23:49:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:39,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3676365] [2023-08-26 23:49:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:39,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3676365] [2023-08-26 23:49:39,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3676365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:39,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:39,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:49:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948777160] [2023-08-26 23:49:39,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:39,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:39,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:39,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:39,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:39,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 1476 [2023-08-26 23:49:39,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 3 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:39,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 1476 [2023-08-26 23:49:39,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:39,653 INFO L124 PetriNetUnfolderBase]: 1425/2300 cut-off events. [2023-08-26 23:49:39,653 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-08-26 23:49:39,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5030 conditions, 2300 events. 1425/2300 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11157 event pairs, 945 based on Foata normal form. 0/1301 useless extension candidates. Maximal degree in co-relation 5015. Up to 1951 conditions per place. [2023-08-26 23:49:39,661 INFO L140 encePairwiseOnDemand]: 1467/1476 looper letters, 89 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-08-26 23:49:39,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 91 transitions, 475 flow [2023-08-26 23:49:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1811 transitions. [2023-08-26 23:49:39,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40898825654923215 [2023-08-26 23:49:39,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1811 transitions. [2023-08-26 23:49:39,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1811 transitions. [2023-08-26 23:49:39,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:39,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1811 transitions. [2023-08-26 23:49:39,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,670 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 199 flow. Second operand 3 states and 1811 transitions. [2023-08-26 23:49:39,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 91 transitions, 475 flow [2023-08-26 23:49:39,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:39,672 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 221 flow [2023-08-26 23:49:39,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-26 23:49:39,673 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-08-26 23:49:39,673 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 221 flow [2023-08-26 23:49:39,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 578.3333333333334) internal successors, (1735), 3 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:39,673 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:39,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 23:49:39,673 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:39,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2098915922, now seen corresponding path program 1 times [2023-08-26 23:49:39,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896892166] [2023-08-26 23:49:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:39,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-26 23:49:39,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:39,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896892166] [2023-08-26 23:49:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896892166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:39,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:49:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858052084] [2023-08-26 23:49:39,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:39,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:39,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 596 out of 1476 [2023-08-26 23:49:39,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:39,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:39,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 596 of 1476 [2023-08-26 23:49:39,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:40,090 INFO L124 PetriNetUnfolderBase]: 1281/2066 cut-off events. [2023-08-26 23:49:40,090 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-08-26 23:49:40,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5126 conditions, 2066 events. 1281/2066 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9324 event pairs, 1007 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 5110. Up to 2066 conditions per place. [2023-08-26 23:49:40,096 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 57 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-26 23:49:40,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 329 flow [2023-08-26 23:49:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1836 transitions. [2023-08-26 23:49:40,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2023-08-26 23:49:40,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1836 transitions. [2023-08-26 23:49:40,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1836 transitions. [2023-08-26 23:49:40,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:40,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1836 transitions. [2023-08-26 23:49:40,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 612.0) internal successors, (1836), 3 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,104 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 221 flow. Second operand 3 states and 1836 transitions. [2023-08-26 23:49:40,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 329 flow [2023-08-26 23:49:40,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:40,106 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 213 flow [2023-08-26 23:49:40,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-08-26 23:49:40,106 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2023-08-26 23:49:40,106 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 213 flow [2023-08-26 23:49:40,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:40,106 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:40,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 23:49:40,107 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:40,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2098915854, now seen corresponding path program 1 times [2023-08-26 23:49:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:40,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021708469] [2023-08-26 23:49:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:40,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:40,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:40,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021708469] [2023-08-26 23:49:40,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021708469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:40,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419269344] [2023-08-26 23:49:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:40,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:40,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:40,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:49:40,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 23:49:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:40,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:49:40,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:40,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:49:40,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419269344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:40,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:49:40,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-26 23:49:40,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290038873] [2023-08-26 23:49:40,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:40,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:49:40,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:40,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:49:40,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:49:40,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 1476 [2023-08-26 23:49:40,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 577.75) internal successors, (2311), 4 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:40,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 1476 [2023-08-26 23:49:40,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:40,673 INFO L124 PetriNetUnfolderBase]: 1009/1670 cut-off events. [2023-08-26 23:49:40,673 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2023-08-26 23:49:40,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 1670 events. 1009/1670 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8042 event pairs, 179 based on Foata normal form. 0/1237 useless extension candidates. Maximal degree in co-relation 4014. Up to 908 conditions per place. [2023-08-26 23:49:40,678 INFO L140 encePairwiseOnDemand]: 1471/1476 looper letters, 112 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-26 23:49:40,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 599 flow [2023-08-26 23:49:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:49:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:49:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2404 transitions. [2023-08-26 23:49:40,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071815718157182 [2023-08-26 23:49:40,682 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2404 transitions. [2023-08-26 23:49:40,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2404 transitions. [2023-08-26 23:49:40,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:40,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2404 transitions. [2023-08-26 23:49:40,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 601.0) internal successors, (2404), 4 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,688 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,688 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 213 flow. Second operand 4 states and 2404 transitions. [2023-08-26 23:49:40,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 599 flow [2023-08-26 23:49:40,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 598 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:40,689 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 204 flow [2023-08-26 23:49:40,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-08-26 23:49:40,690 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-08-26 23:49:40,690 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 204 flow [2023-08-26 23:49:40,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 577.75) internal successors, (2311), 4 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:40,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:40,690 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:40,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-26 23:49:40,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 23:49:40,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:40,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2098915849, now seen corresponding path program 1 times [2023-08-26 23:49:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:40,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084683164] [2023-08-26 23:49:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:41,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:41,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084683164] [2023-08-26 23:49:41,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084683164] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:41,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494968186] [2023-08-26 23:49:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:41,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:41,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:41,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:49:41,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 23:49:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:41,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 23:49:41,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:41,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:49:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:41,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494968186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:49:41,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:49:41,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 23:49:41,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366177186] [2023-08-26 23:49:41,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:49:41,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:49:41,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:41,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:49:41,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:49:41,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 1476 [2023-08-26 23:49:41,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 577.2857142857143) internal successors, (4041), 7 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:41,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:41,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 1476 [2023-08-26 23:49:41,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:41,815 INFO L124 PetriNetUnfolderBase]: 1633/2690 cut-off events. [2023-08-26 23:49:41,816 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2023-08-26 23:49:41,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6535 conditions, 2690 events. 1633/2690 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 13602 event pairs, 639 based on Foata normal form. 0/2113 useless extension candidates. Maximal degree in co-relation 6518. Up to 1331 conditions per place. [2023-08-26 23:49:41,824 INFO L140 encePairwiseOnDemand]: 1471/1476 looper letters, 173 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2023-08-26 23:49:41,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 178 transitions, 916 flow [2023-08-26 23:49:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:49:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:49:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3622 transitions. [2023-08-26 23:49:41,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40898825654923215 [2023-08-26 23:49:41,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3622 transitions. [2023-08-26 23:49:41,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3622 transitions. [2023-08-26 23:49:41,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:41,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3622 transitions. [2023-08-26 23:49:41,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 603.6666666666666) internal successors, (3622), 6 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:41,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1476.0) internal successors, (10332), 7 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:41,836 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1476.0) internal successors, (10332), 7 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:41,836 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 204 flow. Second operand 6 states and 3622 transitions. [2023-08-26 23:49:41,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 178 transitions, 916 flow [2023-08-26 23:49:41,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 178 transitions, 913 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:49:41,838 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 249 flow [2023-08-26 23:49:41,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2023-08-26 23:49:41,839 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-26 23:49:41,839 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 249 flow [2023-08-26 23:49:41,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 577.2857142857143) internal successors, (4041), 7 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:41,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:41,839 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:41,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-26 23:49:42,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:42,044 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:42,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:42,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1629371808, now seen corresponding path program 1 times [2023-08-26 23:49:42,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:42,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236160529] [2023-08-26 23:49:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:42,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:42,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236160529] [2023-08-26 23:49:42,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236160529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:42,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16743722] [2023-08-26 23:49:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:42,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:42,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:42,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:49:42,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 23:49:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:42,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:49:42,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-08-26 23:49:42,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:49:42,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16743722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:42,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:49:42,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-26 23:49:42,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903055661] [2023-08-26 23:49:42,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:42,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:42,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:49:42,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 596 out of 1476 [2023-08-26 23:49:42,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:42,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:42,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 596 of 1476 [2023-08-26 23:49:42,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:42,797 INFO L124 PetriNetUnfolderBase]: 1485/2448 cut-off events. [2023-08-26 23:49:42,797 INFO L125 PetriNetUnfolderBase]: For 1747/1747 co-relation queries the response was YES. [2023-08-26 23:49:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 2448 events. 1485/2448 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11583 event pairs, 1241 based on Foata normal form. 0/2055 useless extension candidates. Maximal degree in co-relation 6763. Up to 2448 conditions per place. [2023-08-26 23:49:42,806 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-26 23:49:42,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 347 flow [2023-08-26 23:49:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1831 transitions. [2023-08-26 23:49:42,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41350496838301715 [2023-08-26 23:49:42,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1831 transitions. [2023-08-26 23:49:42,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1831 transitions. [2023-08-26 23:49:42,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:42,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1831 transitions. [2023-08-26 23:49:42,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 610.3333333333334) internal successors, (1831), 3 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:42,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:42,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:42,813 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 249 flow. Second operand 3 states and 1831 transitions. [2023-08-26 23:49:42,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 347 flow [2023-08-26 23:49:42,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 56 transitions, 339 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:42,815 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 229 flow [2023-08-26 23:49:42,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2023-08-26 23:49:42,815 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-08-26 23:49:42,815 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 229 flow [2023-08-26 23:49:42,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:42,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:42,816 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:42,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 23:49:43,021 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,SelfDestructingSolverStorable16 [2023-08-26 23:49:43,021 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:43,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1629371811, now seen corresponding path program 1 times [2023-08-26 23:49:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:43,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947578789] [2023-08-26 23:49:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:43,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-08-26 23:49:43,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:43,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947578789] [2023-08-26 23:49:43,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947578789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:43,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:43,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:49:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428517930] [2023-08-26 23:49:43,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:43,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:43,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:43,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 596 out of 1476 [2023-08-26 23:49:43,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:43,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:43,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 596 of 1476 [2023-08-26 23:49:43,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:43,581 INFO L124 PetriNetUnfolderBase]: 1343/2216 cut-off events. [2023-08-26 23:49:43,581 INFO L125 PetriNetUnfolderBase]: For 1215/1215 co-relation queries the response was YES. [2023-08-26 23:49:43,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 2216 events. 1343/2216 cut-off events. For 1215/1215 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10292 event pairs, 1113 based on Foata normal form. 0/1935 useless extension candidates. Maximal degree in co-relation 5720. Up to 2216 conditions per place. [2023-08-26 23:49:43,589 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-26 23:49:43,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 323 flow [2023-08-26 23:49:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1829 transitions. [2023-08-26 23:49:43,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130532971996387 [2023-08-26 23:49:43,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1829 transitions. [2023-08-26 23:49:43,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1829 transitions. [2023-08-26 23:49:43,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:43,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1829 transitions. [2023-08-26 23:49:43,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.6666666666666) internal successors, (1829), 3 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:43,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:43,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:43,598 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 229 flow. Second operand 3 states and 1829 transitions. [2023-08-26 23:49:43,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 323 flow [2023-08-26 23:49:43,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:43,600 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 216 flow [2023-08-26 23:49:43,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2023-08-26 23:49:43,600 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2023-08-26 23:49:43,600 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 216 flow [2023-08-26 23:49:43,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:43,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:43,600 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 23:49:43,601 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:43,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1629371810, now seen corresponding path program 2 times [2023-08-26 23:49:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:43,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969385746] [2023-08-26 23:49:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-08-26 23:49:43,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:43,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969385746] [2023-08-26 23:49:43,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969385746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:43,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:43,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:49:43,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693725149] [2023-08-26 23:49:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:43,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:43,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 596 out of 1476 [2023-08-26 23:49:43,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:43,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:43,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 596 of 1476 [2023-08-26 23:49:43,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:44,184 INFO L124 PetriNetUnfolderBase]: 1207/1994 cut-off events. [2023-08-26 23:49:44,184 INFO L125 PetriNetUnfolderBase]: For 1149/1149 co-relation queries the response was YES. [2023-08-26 23:49:44,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4988 conditions, 1994 events. 1207/1994 cut-off events. For 1149/1149 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9083 event pairs, 991 based on Foata normal form. 84/1817 useless extension candidates. Maximal degree in co-relation 4965. Up to 1994 conditions per place. [2023-08-26 23:49:44,190 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-26 23:49:44,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 306 flow [2023-08-26 23:49:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2023-08-26 23:49:44,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41260162601626016 [2023-08-26 23:49:44,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2023-08-26 23:49:44,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2023-08-26 23:49:44,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:44,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2023-08-26 23:49:44,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:44,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:44,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:44,197 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 216 flow. Second operand 3 states and 1827 transitions. [2023-08-26 23:49:44,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 306 flow [2023-08-26 23:49:44,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 295 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-26 23:49:44,199 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 193 flow [2023-08-26 23:49:44,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-08-26 23:49:44,199 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2023-08-26 23:49:44,199 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 193 flow [2023-08-26 23:49:44,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 599.6666666666666) internal successors, (1799), 3 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:44,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:44,200 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:44,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 23:49:44,200 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:44,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:44,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1518459910, now seen corresponding path program 1 times [2023-08-26 23:49:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800262227] [2023-08-26 23:49:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:44,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800262227] [2023-08-26 23:49:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800262227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:44,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:44,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:49:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717191312] [2023-08-26 23:49:44,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:44,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:49:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:49:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 23:49:44,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 555 out of 1476 [2023-08-26 23:49:44,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 558.75) internal successors, (2235), 4 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:44,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:44,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 555 of 1476 [2023-08-26 23:49:44,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:45,357 INFO L124 PetriNetUnfolderBase]: 1242/2096 cut-off events. [2023-08-26 23:49:45,357 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2023-08-26 23:49:45,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4928 conditions, 2096 events. 1242/2096 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10262 event pairs, 991 based on Foata normal form. 1/1836 useless extension candidates. Maximal degree in co-relation 4908. Up to 1969 conditions per place. [2023-08-26 23:49:45,364 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 65 selfloop transitions, 1 changer transitions 5/71 dead transitions. [2023-08-26 23:49:45,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 391 flow [2023-08-26 23:49:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:49:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:49:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2273 transitions. [2023-08-26 23:49:45,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3849932249322493 [2023-08-26 23:49:45,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2273 transitions. [2023-08-26 23:49:45,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2273 transitions. [2023-08-26 23:49:45,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:45,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2273 transitions. [2023-08-26 23:49:45,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 568.25) internal successors, (2273), 4 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:45,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:45,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:45,373 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 193 flow. Second operand 4 states and 2273 transitions. [2023-08-26 23:49:45,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 391 flow [2023-08-26 23:49:45,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:45,374 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 199 flow [2023-08-26 23:49:45,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-08-26 23:49:45,374 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2023-08-26 23:49:45,375 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 199 flow [2023-08-26 23:49:45,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 558.75) internal successors, (2235), 4 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:45,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:45,375 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:45,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 23:49:45,375 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:45,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:45,375 INFO L85 PathProgramCache]: Analyzing trace with hash 560471878, now seen corresponding path program 2 times [2023-08-26 23:49:45,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:45,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852272522] [2023-08-26 23:49:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:45,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:45,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:45,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852272522] [2023-08-26 23:49:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852272522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:45,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:45,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:49:45,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716046154] [2023-08-26 23:49:45,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:45,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:49:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:45,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:49:45,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 23:49:45,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 555 out of 1476 [2023-08-26 23:49:45,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 558.75) internal successors, (2235), 4 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:45,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:45,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 555 of 1476 [2023-08-26 23:49:45,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:46,409 INFO L124 PetriNetUnfolderBase]: 1239/2087 cut-off events. [2023-08-26 23:49:46,409 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2023-08-26 23:49:46,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5013 conditions, 2087 events. 1239/2087 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10172 event pairs, 961 based on Foata normal form. 1/1827 useless extension candidates. Maximal degree in co-relation 4991. Up to 1927 conditions per place. [2023-08-26 23:49:46,415 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 76 selfloop transitions, 1 changer transitions 5/82 dead transitions. [2023-08-26 23:49:46,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 82 transitions, 450 flow [2023-08-26 23:49:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:49:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:49:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2287 transitions. [2023-08-26 23:49:46,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38736449864498645 [2023-08-26 23:49:46,419 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2287 transitions. [2023-08-26 23:49:46,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2287 transitions. [2023-08-26 23:49:46,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:46,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2287 transitions. [2023-08-26 23:49:46,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 571.75) internal successors, (2287), 4 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,425 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,425 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 199 flow. Second operand 4 states and 2287 transitions. [2023-08-26 23:49:46,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 82 transitions, 450 flow [2023-08-26 23:49:46,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 444 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 23:49:46,426 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 203 flow [2023-08-26 23:49:46,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2023-08-26 23:49:46,427 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-08-26 23:49:46,427 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 203 flow [2023-08-26 23:49:46,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 558.75) internal successors, (2235), 4 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:46,427 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:46,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 23:49:46,427 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:46,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2124340960, now seen corresponding path program 1 times [2023-08-26 23:49:46,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:46,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575065765] [2023-08-26 23:49:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:46,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:46,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575065765] [2023-08-26 23:49:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575065765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:46,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:46,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:49:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279657952] [2023-08-26 23:49:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:46,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:46,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 563 out of 1476 [2023-08-26 23:49:46,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:46,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 563 of 1476 [2023-08-26 23:49:46,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:46,889 INFO L124 PetriNetUnfolderBase]: 1140/1915 cut-off events. [2023-08-26 23:49:46,890 INFO L125 PetriNetUnfolderBase]: For 695/695 co-relation queries the response was YES. [2023-08-26 23:49:46,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4725 conditions, 1915 events. 1140/1915 cut-off events. For 695/695 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9142 event pairs, 868 based on Foata normal form. 62/1736 useless extension candidates. Maximal degree in co-relation 4702. Up to 1756 conditions per place. [2023-08-26 23:49:46,896 INFO L140 encePairwiseOnDemand]: 1473/1476 looper letters, 74 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-26 23:49:46,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 426 flow [2023-08-26 23:49:46,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1751 transitions. [2023-08-26 23:49:46,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954381210478771 [2023-08-26 23:49:46,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1751 transitions. [2023-08-26 23:49:46,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1751 transitions. [2023-08-26 23:49:46,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:46,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1751 transitions. [2023-08-26 23:49:46,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 3 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,903 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 203 flow. Second operand 3 states and 1751 transitions. [2023-08-26 23:49:46,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 426 flow [2023-08-26 23:49:46,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 421 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 23:49:46,905 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 206 flow [2023-08-26 23:49:46,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2023-08-26 23:49:46,905 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-08-26 23:49:46,905 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 206 flow [2023-08-26 23:49:46,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:46,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:46,905 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:46,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 23:49:46,906 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:46,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1990013111, now seen corresponding path program 1 times [2023-08-26 23:49:46,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156648489] [2023-08-26 23:49:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:46,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156648489] [2023-08-26 23:49:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156648489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:47,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:47,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:49:47,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172815450] [2023-08-26 23:49:47,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:47,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:47,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:47,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 563 out of 1476 [2023-08-26 23:49:47,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:47,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 563 of 1476 [2023-08-26 23:49:47,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:47,348 INFO L124 PetriNetUnfolderBase]: 1177/1944 cut-off events. [2023-08-26 23:49:47,348 INFO L125 PetriNetUnfolderBase]: For 1095/1095 co-relation queries the response was YES. [2023-08-26 23:49:47,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5142 conditions, 1944 events. 1177/1944 cut-off events. For 1095/1095 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8975 event pairs, 771 based on Foata normal form. 0/1703 useless extension candidates. Maximal degree in co-relation 5119. Up to 1591 conditions per place. [2023-08-26 23:49:47,354 INFO L140 encePairwiseOnDemand]: 1471/1476 looper letters, 67 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-26 23:49:47,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 410 flow [2023-08-26 23:49:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1742 transitions. [2023-08-26 23:49:47,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3934056007226739 [2023-08-26 23:49:47,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1742 transitions. [2023-08-26 23:49:47,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1742 transitions. [2023-08-26 23:49:47,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:47,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1742 transitions. [2023-08-26 23:49:47,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 580.6666666666666) internal successors, (1742), 3 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,361 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 206 flow. Second operand 3 states and 1742 transitions. [2023-08-26 23:49:47,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 410 flow [2023-08-26 23:49:47,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:49:47,363 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 228 flow [2023-08-26 23:49:47,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2023-08-26 23:49:47,363 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-26 23:49:47,363 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 228 flow [2023-08-26 23:49:47,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 568.3333333333334) internal successors, (1705), 3 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:47,363 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 23:49:47,363 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:47,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 224892357, now seen corresponding path program 1 times [2023-08-26 23:49:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:47,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714030528] [2023-08-26 23:49:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:47,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-26 23:49:47,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:47,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714030528] [2023-08-26 23:49:47,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714030528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:47,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:47,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:49:47,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618290567] [2023-08-26 23:49:47,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:47,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:47,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:47,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:47,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:47,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 1476 [2023-08-26 23:49:47,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:47,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 1476 [2023-08-26 23:49:47,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:47,980 INFO L124 PetriNetUnfolderBase]: 1171/1938 cut-off events. [2023-08-26 23:49:47,980 INFO L125 PetriNetUnfolderBase]: For 988/988 co-relation queries the response was YES. [2023-08-26 23:49:47,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 1938 events. 1171/1938 cut-off events. For 988/988 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9113 event pairs, 837 based on Foata normal form. 6/1727 useless extension candidates. Maximal degree in co-relation 5287. Up to 1687 conditions per place. [2023-08-26 23:49:47,985 INFO L140 encePairwiseOnDemand]: 1472/1476 looper letters, 86 selfloop transitions, 2 changer transitions 2/90 dead transitions. [2023-08-26 23:49:47,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 526 flow [2023-08-26 23:49:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1818 transitions. [2023-08-26 23:49:47,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105691056910569 [2023-08-26 23:49:47,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1818 transitions. [2023-08-26 23:49:47,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1818 transitions. [2023-08-26 23:49:47,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:47,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1818 transitions. [2023-08-26 23:49:47,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 606.0) internal successors, (1818), 3 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,994 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 228 flow. Second operand 3 states and 1818 transitions. [2023-08-26 23:49:47,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 526 flow [2023-08-26 23:49:47,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 519 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:47,995 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 234 flow [2023-08-26 23:49:47,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2023-08-26 23:49:47,996 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-26 23:49:47,996 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 234 flow [2023-08-26 23:49:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:47,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:47,996 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:47,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 23:49:47,996 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:47,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1658948815, now seen corresponding path program 2 times [2023-08-26 23:49:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:47,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897963797] [2023-08-26 23:49:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:47,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:48,223 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-26 23:49:48,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:48,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897963797] [2023-08-26 23:49:48,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897963797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:48,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:48,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:49:48,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356508722] [2023-08-26 23:49:48,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:48,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:48,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:48,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 1476 [2023-08-26 23:49:48,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:48,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 1476 [2023-08-26 23:49:48,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:48,526 INFO L124 PetriNetUnfolderBase]: 1033/1698 cut-off events. [2023-08-26 23:49:48,527 INFO L125 PetriNetUnfolderBase]: For 1616/1616 co-relation queries the response was YES. [2023-08-26 23:49:48,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 1698 events. 1033/1698 cut-off events. For 1616/1616 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7496 event pairs, 490 based on Foata normal form. 74/1573 useless extension candidates. Maximal degree in co-relation 4599. Up to 1667 conditions per place. [2023-08-26 23:49:48,533 INFO L140 encePairwiseOnDemand]: 1472/1476 looper letters, 56 selfloop transitions, 2 changer transitions 4/62 dead transitions. [2023-08-26 23:49:48,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 385 flow [2023-08-26 23:49:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1798 transitions. [2023-08-26 23:49:48,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40605239385727193 [2023-08-26 23:49:48,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1798 transitions. [2023-08-26 23:49:48,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1798 transitions. [2023-08-26 23:49:48,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:48,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1798 transitions. [2023-08-26 23:49:48,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 599.3333333333334) internal successors, (1798), 3 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,541 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 234 flow. Second operand 3 states and 1798 transitions. [2023-08-26 23:49:48,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 385 flow [2023-08-26 23:49:48,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 377 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 23:49:48,543 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 241 flow [2023-08-26 23:49:48,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2023-08-26 23:49:48,545 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-26 23:49:48,545 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 241 flow [2023-08-26 23:49:48,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:48,546 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:48,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 23:49:48,546 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:48,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash 654429639, now seen corresponding path program 1 times [2023-08-26 23:49:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:48,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655778276] [2023-08-26 23:49:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:48,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:48,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655778276] [2023-08-26 23:49:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655778276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:48,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:48,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:49:48,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362856974] [2023-08-26 23:49:48,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:48,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:49:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:49:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:49:48,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 1476 [2023-08-26 23:49:48,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 581.0) internal successors, (1743), 3 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:48,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 1476 [2023-08-26 23:49:48,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:48,881 INFO L124 PetriNetUnfolderBase]: 997/1632 cut-off events. [2023-08-26 23:49:48,881 INFO L125 PetriNetUnfolderBase]: For 1086/1086 co-relation queries the response was YES. [2023-08-26 23:49:48,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 1632 events. 997/1632 cut-off events. For 1086/1086 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7142 event pairs, 789 based on Foata normal form. 0/1455 useless extension candidates. Maximal degree in co-relation 4485. Up to 1632 conditions per place. [2023-08-26 23:49:48,888 INFO L140 encePairwiseOnDemand]: 1474/1476 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-26 23:49:48,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 54 transitions, 345 flow [2023-08-26 23:49:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:49:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:49:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1760 transitions. [2023-08-26 23:49:48,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974706413730804 [2023-08-26 23:49:48,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1760 transitions. [2023-08-26 23:49:48,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1760 transitions. [2023-08-26 23:49:48,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:48,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1760 transitions. [2023-08-26 23:49:48,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 586.6666666666666) internal successors, (1760), 3 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1476.0) internal successors, (5904), 4 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,895 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 241 flow. Second operand 3 states and 1760 transitions. [2023-08-26 23:49:48,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 54 transitions, 345 flow [2023-08-26 23:49:48,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 337 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:48,897 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 231 flow [2023-08-26 23:49:48,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-26 23:49:48,897 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-08-26 23:49:48,897 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 231 flow [2023-08-26 23:49:48,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 581.0) internal successors, (1743), 3 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:48,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:48,898 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:48,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 23:49:48,898 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:48,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash 654429175, now seen corresponding path program 1 times [2023-08-26 23:49:48,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:48,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005766711] [2023-08-26 23:49:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:48,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005766711] [2023-08-26 23:49:48,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005766711] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006386405] [2023-08-26 23:49:48,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:48,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:48,943 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) [2023-08-26 23:49:48,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 23:49:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:49,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 23:49:49,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:49,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:49:49,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006386405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:49,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:49:49,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-26 23:49:49,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143460068] [2023-08-26 23:49:49,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:49,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:49:49,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:49:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:49:49,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 1476 [2023-08-26 23:49:49,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 579.5) internal successors, (2318), 4 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:49,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:49,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 1476 [2023-08-26 23:49:49,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:49,461 INFO L124 PetriNetUnfolderBase]: 901/1470 cut-off events. [2023-08-26 23:49:49,461 INFO L125 PetriNetUnfolderBase]: For 717/717 co-relation queries the response was YES. [2023-08-26 23:49:49,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 1470 events. 901/1470 cut-off events. For 717/717 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6022 event pairs, 189 based on Foata normal form. 22/1359 useless extension candidates. Maximal degree in co-relation 3942. Up to 762 conditions per place. [2023-08-26 23:49:49,467 INFO L140 encePairwiseOnDemand]: 1471/1476 looper letters, 76 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-26 23:49:49,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 468 flow [2023-08-26 23:49:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:49:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:49:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2357 transitions. [2023-08-26 23:49:49,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992208672086721 [2023-08-26 23:49:49,475 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2357 transitions. [2023-08-26 23:49:49,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2357 transitions. [2023-08-26 23:49:49,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:49,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2357 transitions. [2023-08-26 23:49:49,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 589.25) internal successors, (2357), 4 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:49,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:49,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:49,480 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 231 flow. Second operand 4 states and 2357 transitions. [2023-08-26 23:49:49,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 468 flow [2023-08-26 23:49:49,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 467 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:49:49,482 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 224 flow [2023-08-26 23:49:49,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-08-26 23:49:49,483 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2023-08-26 23:49:49,483 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 224 flow [2023-08-26 23:49:49,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 579.5) internal successors, (2318), 4 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:49,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:49,483 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:49,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 23:49:49,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-26 23:49:49,685 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:49,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:49,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1187505404, now seen corresponding path program 1 times [2023-08-26 23:49:49,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:49,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131923051] [2023-08-26 23:49:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:49,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:49,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:49,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131923051] [2023-08-26 23:49:49,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131923051] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:49,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534455152] [2023-08-26 23:49:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:49,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:49,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:49,778 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) [2023-08-26 23:49:49,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 23:49:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:50,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:49:50,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:50,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:49:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:50,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534455152] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:49:50,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:49:50,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 23:49:50,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075299361] [2023-08-26 23:49:50,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:49:50,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:49:50,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:50,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:49:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:49:50,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 1476 [2023-08-26 23:49:50,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 580.5714285714286) internal successors, (4064), 7 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:50,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:50,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 1476 [2023-08-26 23:49:50,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:50,581 INFO L124 PetriNetUnfolderBase]: 1337/2204 cut-off events. [2023-08-26 23:49:50,582 INFO L125 PetriNetUnfolderBase]: For 1197/1197 co-relation queries the response was YES. [2023-08-26 23:49:50,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5911 conditions, 2204 events. 1337/2204 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9324 event pairs, 189 based on Foata normal form. 22/2071 useless extension candidates. Maximal degree in co-relation 5887. Up to 708 conditions per place. [2023-08-26 23:49:50,592 INFO L140 encePairwiseOnDemand]: 1471/1476 looper letters, 114 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2023-08-26 23:49:50,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 120 transitions, 687 flow [2023-08-26 23:49:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:49:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:49:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3540 transitions. [2023-08-26 23:49:50,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997289972899729 [2023-08-26 23:49:50,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3540 transitions. [2023-08-26 23:49:50,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3540 transitions. [2023-08-26 23:49:50,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:50,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3540 transitions. [2023-08-26 23:49:50,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 590.0) internal successors, (3540), 6 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:50,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1476.0) internal successors, (10332), 7 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:50,604 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1476.0) internal successors, (10332), 7 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:50,604 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 224 flow. Second operand 6 states and 3540 transitions. [2023-08-26 23:49:50,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 120 transitions, 687 flow [2023-08-26 23:49:50,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 120 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:49:50,607 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 241 flow [2023-08-26 23:49:50,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-08-26 23:49:50,607 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-26 23:49:50,607 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 241 flow [2023-08-26 23:49:50,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 580.5714285714286) internal successors, (4064), 7 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:50,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:50,608 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:50,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 23:49:50,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-26 23:49:50,813 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:50,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash 37165938, now seen corresponding path program 1 times [2023-08-26 23:49:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109075184] [2023-08-26 23:49:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:50,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-26 23:49:51,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:51,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109075184] [2023-08-26 23:49:51,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109075184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:51,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:51,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:49:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156442219] [2023-08-26 23:49:51,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:51,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:49:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:49:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 23:49:51,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 545 out of 1476 [2023-08-26 23:49:51,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:51,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:51,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 545 of 1476 [2023-08-26 23:49:51,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:51,713 INFO L124 PetriNetUnfolderBase]: 1524/2519 cut-off events. [2023-08-26 23:49:51,713 INFO L125 PetriNetUnfolderBase]: For 1513/1513 co-relation queries the response was YES. [2023-08-26 23:49:51,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6933 conditions, 2519 events. 1524/2519 cut-off events. For 1513/1513 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11226 event pairs, 907 based on Foata normal form. 0/2365 useless extension candidates. Maximal degree in co-relation 6907. Up to 1922 conditions per place. [2023-08-26 23:49:51,721 INFO L140 encePairwiseOnDemand]: 1469/1476 looper letters, 74 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2023-08-26 23:49:51,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 509 flow [2023-08-26 23:49:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:49:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:49:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2237 transitions. [2023-08-26 23:49:51,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37889566395663954 [2023-08-26 23:49:51,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2237 transitions. [2023-08-26 23:49:51,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2237 transitions. [2023-08-26 23:49:51,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:51,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2237 transitions. [2023-08-26 23:49:51,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 559.25) internal successors, (2237), 4 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:51,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:51,733 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1476.0) internal successors, (7380), 5 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:51,733 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 241 flow. Second operand 4 states and 2237 transitions. [2023-08-26 23:49:51,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 509 flow [2023-08-26 23:49:51,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 502 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 23:49:51,735 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 283 flow [2023-08-26 23:49:51,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2023-08-26 23:49:51,737 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-08-26 23:49:51,737 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 283 flow [2023-08-26 23:49:51,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:51,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:51,737 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:51,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-26 23:49:51,738 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:51,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:51,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1639769514, now seen corresponding path program 2 times [2023-08-26 23:49:51,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:51,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527480358] [2023-08-26 23:49:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:51,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-26 23:49:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527480358] [2023-08-26 23:49:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527480358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:49:52,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:49:52,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 23:49:52,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826337222] [2023-08-26 23:49:52,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:49:52,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:49:52,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:49:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:49:52,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 535 out of 1476 [2023-08-26 23:49:52,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 538.4285714285714) internal successors, (3769), 7 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:52,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:52,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 535 of 1476 [2023-08-26 23:49:52,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:52,888 INFO L124 PetriNetUnfolderBase]: 1565/2602 cut-off events. [2023-08-26 23:49:52,888 INFO L125 PetriNetUnfolderBase]: For 1789/1789 co-relation queries the response was YES. [2023-08-26 23:49:52,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7518 conditions, 2602 events. 1565/2602 cut-off events. For 1789/1789 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11687 event pairs, 1015 based on Foata normal form. 0/2535 useless extension candidates. Maximal degree in co-relation 7490. Up to 1893 conditions per place. [2023-08-26 23:49:52,898 INFO L140 encePairwiseOnDemand]: 1469/1476 looper letters, 72 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-08-26 23:49:52,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 530 flow [2023-08-26 23:49:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:49:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:49:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3262 transitions. [2023-08-26 23:49:52,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3683378500451671 [2023-08-26 23:49:52,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3262 transitions. [2023-08-26 23:49:52,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3262 transitions. [2023-08-26 23:49:52,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:52,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3262 transitions. [2023-08-26 23:49:52,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 543.6666666666666) internal successors, (3262), 6 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:52,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1476.0) internal successors, (10332), 7 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:52,909 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1476.0) internal successors, (10332), 7 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:52,909 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 283 flow. Second operand 6 states and 3262 transitions. [2023-08-26 23:49:52,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 530 flow [2023-08-26 23:49:52,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 23:49:52,911 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 304 flow [2023-08-26 23:49:52,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2023-08-26 23:49:52,912 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2023-08-26 23:49:52,912 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 304 flow [2023-08-26 23:49:52,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 538.4285714285714) internal successors, (3769), 7 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:52,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:52,912 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:52,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-26 23:49:52,912 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:49:52,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:52,913 INFO L85 PathProgramCache]: Analyzing trace with hash -492045157, now seen corresponding path program 1 times [2023-08-26 23:49:52,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:52,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628922845] [2023-08-26 23:49:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:52,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:56,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628922845] [2023-08-26 23:49:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628922845] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918921600] [2023-08-26 23:49:56,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:56,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:56,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:56,093 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) [2023-08-26 23:49:56,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 23:49:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:56,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-26 23:49:56,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:57,439 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:49:57,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 76 [2023-08-26 23:49:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:49:57,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:50:05,009 INFO L322 Elim1Store]: treesize reduction 275, result has 65.1 percent of original size [2023-08-26 23:50:05,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 231 treesize of output 657 [2023-08-26 23:50:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:50:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918921600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:50:06,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:50:06,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 37 [2023-08-26 23:50:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150651975] [2023-08-26 23:50:06,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:50:06,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-26 23:50:06,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:50:06,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-26 23:50:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2023-08-26 23:50:06,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-26 23:50:06,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 304 flow. Second operand has 38 states, 38 states have (on average 467.6842105263158) internal successors, (17772), 38 states have internal predecessors, (17772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:06,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:50:06,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-26 23:50:06,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:50:33,214 INFO L124 PetriNetUnfolderBase]: 2881/4950 cut-off events. [2023-08-26 23:50:33,214 INFO L125 PetriNetUnfolderBase]: For 3786/3786 co-relation queries the response was YES. [2023-08-26 23:50:33,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14550 conditions, 4950 events. 2881/4950 cut-off events. For 3786/3786 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 28056 event pairs, 565 based on Foata normal form. 17/4739 useless extension candidates. Maximal degree in co-relation 14519. Up to 2287 conditions per place. [2023-08-26 23:50:33,233 INFO L140 encePairwiseOnDemand]: 1458/1476 looper letters, 209 selfloop transitions, 233 changer transitions 11/453 dead transitions. [2023-08-26 23:50:33,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 453 transitions, 2755 flow [2023-08-26 23:50:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-08-26 23:50:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-08-26 23:50:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 29271 transitions. [2023-08-26 23:50:33,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3198596905323892 [2023-08-26 23:50:33,253 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 29271 transitions. [2023-08-26 23:50:33,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 29271 transitions. [2023-08-26 23:50:33,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:50:33,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 29271 transitions. [2023-08-26 23:50:33,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 472.11290322580646) internal successors, (29271), 62 states have internal predecessors, (29271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:33,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 1476.0) internal successors, (92988), 63 states have internal predecessors, (92988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:33,331 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 1476.0) internal successors, (92988), 63 states have internal predecessors, (92988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:33,332 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 304 flow. Second operand 62 states and 29271 transitions. [2023-08-26 23:50:33,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 453 transitions, 2755 flow [2023-08-26 23:50:33,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 453 transitions, 2724 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 23:50:33,341 INFO L231 Difference]: Finished difference. Result has 155 places, 303 transitions, 2216 flow [2023-08-26 23:50:33,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2216, PETRI_PLACES=155, PETRI_TRANSITIONS=303} [2023-08-26 23:50:33,341 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 83 predicate places. [2023-08-26 23:50:33,341 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 303 transitions, 2216 flow [2023-08-26 23:50:33,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 467.6842105263158) internal successors, (17772), 38 states have internal predecessors, (17772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:33,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:50:33,343 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:50:33,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 23:50:33,548 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,SelfDestructingSolverStorable30 [2023-08-26 23:50:33,548 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:50:33,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:50:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -207680221, now seen corresponding path program 2 times [2023-08-26 23:50:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:50:33,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495262458] [2023-08-26 23:50:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:50:33,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:50:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:50:36,221 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:50:36,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:50:36,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495262458] [2023-08-26 23:50:36,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495262458] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:50:36,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455322721] [2023-08-26 23:50:36,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:50:36,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:50:36,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:50:36,223 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) [2023-08-26 23:50:36,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 23:50:36,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:50:36,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:50:36,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-26 23:50:36,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:50:37,778 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:50:37,779 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 80 [2023-08-26 23:50:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:50:38,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:50:40,652 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:50:40,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 413 treesize of output 403 [2023-08-26 23:50:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:50:41,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455322721] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:50:41,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:50:41,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 40 [2023-08-26 23:50:41,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999402612] [2023-08-26 23:50:41,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:50:41,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-26 23:50:41,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:50:41,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-26 23:50:41,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1442, Unknown=0, NotChecked=0, Total=1640 [2023-08-26 23:50:41,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-26 23:50:41,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 303 transitions, 2216 flow. Second operand has 41 states, 41 states have (on average 467.6341463414634) internal successors, (19173), 41 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:41,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:50:41,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-26 23:50:41,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:50:50,777 INFO L124 PetriNetUnfolderBase]: 4398/7676 cut-off events. [2023-08-26 23:50:50,778 INFO L125 PetriNetUnfolderBase]: For 30487/30487 co-relation queries the response was YES. [2023-08-26 23:50:50,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34297 conditions, 7676 events. 4398/7676 cut-off events. For 30487/30487 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 48558 event pairs, 567 based on Foata normal form. 156/7464 useless extension candidates. Maximal degree in co-relation 34245. Up to 2174 conditions per place. [2023-08-26 23:50:50,814 INFO L140 encePairwiseOnDemand]: 1458/1476 looper letters, 331 selfloop transitions, 301 changer transitions 92/724 dead transitions. [2023-08-26 23:50:50,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 724 transitions, 6822 flow [2023-08-26 23:50:50,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-26 23:50:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-26 23:50:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 19863 transitions. [2023-08-26 23:50:50,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3204123112659698 [2023-08-26 23:50:50,858 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 19863 transitions. [2023-08-26 23:50:50,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 19863 transitions. [2023-08-26 23:50:50,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:50:50,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 19863 transitions. [2023-08-26 23:50:50,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 472.92857142857144) internal successors, (19863), 42 states have internal predecessors, (19863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:50,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 1476.0) internal successors, (63468), 43 states have internal predecessors, (63468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:50,922 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 1476.0) internal successors, (63468), 43 states have internal predecessors, (63468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:50,922 INFO L175 Difference]: Start difference. First operand has 155 places, 303 transitions, 2216 flow. Second operand 42 states and 19863 transitions. [2023-08-26 23:50:50,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 724 transitions, 6822 flow [2023-08-26 23:50:51,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 724 transitions, 6446 flow, removed 160 selfloop flow, removed 3 redundant places. [2023-08-26 23:50:51,031 INFO L231 Difference]: Finished difference. Result has 226 places, 474 transitions, 4624 flow [2023-08-26 23:50:51,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=4624, PETRI_PLACES=226, PETRI_TRANSITIONS=474} [2023-08-26 23:50:51,033 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 154 predicate places. [2023-08-26 23:50:51,033 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 474 transitions, 4624 flow [2023-08-26 23:50:51,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 467.6341463414634) internal successors, (19173), 41 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:51,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:50:51,035 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:50:51,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-26 23:50:51,240 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,SelfDestructingSolverStorable31 [2023-08-26 23:50:51,241 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:50:51,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:50:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash -346781755, now seen corresponding path program 3 times [2023-08-26 23:50:51,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:50:51,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667091830] [2023-08-26 23:50:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:50:51,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:50:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:50:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:50:54,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:50:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667091830] [2023-08-26 23:50:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667091830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:50:54,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950445097] [2023-08-26 23:50:54,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:50:54,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:50:54,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:50:54,268 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) [2023-08-26 23:50:54,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 23:50:54,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 23:50:54,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:50:54,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-26 23:50:54,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:50:54,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:50:54,676 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-08-26 23:50:54,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2023-08-26 23:50:54,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:50:54,736 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-26 23:50:54,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-26 23:50:55,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:50:55,295 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 50 [2023-08-26 23:50:55,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 224 [2023-08-26 23:50:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:50:55,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:50:58,302 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (not (= 0 (mod c_~break_10~0 256))))) (and (or (and (< c_~result_8~0 0) .cse0) (forall ((v_ArrVal_1394 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1394))) (or (not (= (mod (select (select .cse1 c_~ends_with_6~0.base) c_~ends_with_6~0.offset) 256) 0)) (= (mod (select (select .cse1 c_~ends_with_2~0.base) c_~ends_with_2~0.offset) 256) 0))))) (or (and (<= 0 c_~result_8~0) (<= c_~result_8~0 0) .cse0) (forall ((v_ArrVal_1394 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1394))) (or (= (mod (select (select .cse2 c_~ends_with_2~0.base) c_~ends_with_2~0.offset) 256) 0) (= (mod (select (select .cse2 c_~ends_with_6~0.base) c_~ends_with_6~0.offset) 256) 0))))) (or (and .cse0 (< 0 c_~result_8~0)) (forall ((v_ArrVal_1394 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1394))) (or (not (= (mod (select (select .cse3 c_~ends_with_2~0.base) c_~ends_with_2~0.offset) 256) 0)) (= (mod (select (select .cse3 c_~ends_with_6~0.base) c_~ends_with_6~0.offset) 256) 0))))))) is different from false [2023-08-26 23:51:00,329 INFO L322 Elim1Store]: treesize reduction 15, result has 76.9 percent of original size [2023-08-26 23:51:00,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 257 [2023-08-26 23:51:00,356 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:51:00,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 207 [2023-08-26 23:51:00,369 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:51:00,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 203 [2023-08-26 23:51:00,384 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:51:00,385 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 199 [2023-08-26 23:51:00,398 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:51:00,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 195 [2023-08-26 23:51:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:51:01,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950445097] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:51:01,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:51:01,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 46 [2023-08-26 23:51:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255776711] [2023-08-26 23:51:01,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:51:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-26 23:51:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:51:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-26 23:51:01,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1922, Unknown=19, NotChecked=90, Total=2256 [2023-08-26 23:51:01,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1476 [2023-08-26 23:51:01,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 474 transitions, 4624 flow. Second operand has 48 states, 48 states have (on average 455.5625) internal successors, (21867), 48 states have internal predecessors, (21867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:01,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:51:01,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1476 [2023-08-26 23:51:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:51:11,155 INFO L124 PetriNetUnfolderBase]: 4313/7595 cut-off events. [2023-08-26 23:51:11,156 INFO L125 PetriNetUnfolderBase]: For 95262/95262 co-relation queries the response was YES. [2023-08-26 23:51:11,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46084 conditions, 7595 events. 4313/7595 cut-off events. For 95262/95262 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 47902 event pairs, 878 based on Foata normal form. 126/7710 useless extension candidates. Maximal degree in co-relation 45998. Up to 2193 conditions per place. [2023-08-26 23:51:11,222 INFO L140 encePairwiseOnDemand]: 1457/1476 looper letters, 359 selfloop transitions, 298 changer transitions 74/731 dead transitions. [2023-08-26 23:51:11,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 731 transitions, 9155 flow [2023-08-26 23:51:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-26 23:51:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-26 23:51:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 17487 transitions. [2023-08-26 23:51:11,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31177792041078306 [2023-08-26 23:51:11,234 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 17487 transitions. [2023-08-26 23:51:11,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 17487 transitions. [2023-08-26 23:51:11,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:51:11,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 17487 transitions. [2023-08-26 23:51:11,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 460.1842105263158) internal successors, (17487), 38 states have internal predecessors, (17487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:11,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 1476.0) internal successors, (57564), 39 states have internal predecessors, (57564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:11,271 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 1476.0) internal successors, (57564), 39 states have internal predecessors, (57564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:11,272 INFO L175 Difference]: Start difference. First operand has 226 places, 474 transitions, 4624 flow. Second operand 38 states and 17487 transitions. [2023-08-26 23:51:11,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 731 transitions, 9155 flow [2023-08-26 23:51:11,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 731 transitions, 8391 flow, removed 350 selfloop flow, removed 9 redundant places. [2023-08-26 23:51:11,651 INFO L231 Difference]: Finished difference. Result has 256 places, 501 transitions, 5785 flow [2023-08-26 23:51:11,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=4221, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5785, PETRI_PLACES=256, PETRI_TRANSITIONS=501} [2023-08-26 23:51:11,651 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 184 predicate places. [2023-08-26 23:51:11,651 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 501 transitions, 5785 flow [2023-08-26 23:51:11,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 455.5625) internal successors, (21867), 48 states have internal predecessors, (21867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:11,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:51:11,653 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:51:11,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 23:51:11,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-26 23:51:11,859 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:51:11,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:51:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2081598427, now seen corresponding path program 4 times [2023-08-26 23:51:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:51:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641766883] [2023-08-26 23:51:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:51:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:51:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:51:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:51:14,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:51:14,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641766883] [2023-08-26 23:51:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641766883] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:51:14,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927102111] [2023-08-26 23:51:14,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:51:14,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:51:14,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:51:14,281 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:51:14,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 23:51:14,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:51:14,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:51:14,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-26 23:51:14,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:51:16,258 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:51:16,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 74 [2023-08-26 23:51:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:51:16,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:51:21,189 INFO L322 Elim1Store]: treesize reduction 95, result has 67.4 percent of original size [2023-08-26 23:51:21,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 260 [2023-08-26 23:51:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:51:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927102111] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:51:21,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:51:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 40 [2023-08-26 23:51:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124275229] [2023-08-26 23:51:21,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:51:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-26 23:51:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:51:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-26 23:51:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1420, Unknown=0, NotChecked=0, Total=1640 [2023-08-26 23:51:21,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-26 23:51:21,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 501 transitions, 5785 flow. Second operand has 41 states, 41 states have (on average 467.609756097561) internal successors, (19172), 41 states have internal predecessors, (19172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:21,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:51:21,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-26 23:51:21,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:51:42,162 INFO L124 PetriNetUnfolderBase]: 4568/8179 cut-off events. [2023-08-26 23:51:42,162 INFO L125 PetriNetUnfolderBase]: For 93575/93575 co-relation queries the response was YES. [2023-08-26 23:51:42,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50576 conditions, 8179 events. 4568/8179 cut-off events. For 93575/93575 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 53451 event pairs, 1035 based on Foata normal form. 26/8205 useless extension candidates. Maximal degree in co-relation 50483. Up to 2669 conditions per place. [2023-08-26 23:51:42,332 INFO L140 encePairwiseOnDemand]: 1457/1476 looper letters, 404 selfloop transitions, 342 changer transitions 20/766 dead transitions. [2023-08-26 23:51:42,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 766 transitions, 10074 flow [2023-08-26 23:51:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-26 23:51:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-26 23:51:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 24051 transitions. [2023-08-26 23:51:42,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3195042244540092 [2023-08-26 23:51:42,346 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 24051 transitions. [2023-08-26 23:51:42,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 24051 transitions. [2023-08-26 23:51:42,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:51:42,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 24051 transitions. [2023-08-26 23:51:42,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 471.5882352941176) internal successors, (24051), 51 states have internal predecessors, (24051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:42,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 1476.0) internal successors, (76752), 52 states have internal predecessors, (76752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:42,401 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 1476.0) internal successors, (76752), 52 states have internal predecessors, (76752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:42,401 INFO L175 Difference]: Start difference. First operand has 256 places, 501 transitions, 5785 flow. Second operand 51 states and 24051 transitions. [2023-08-26 23:51:42,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 766 transitions, 10074 flow [2023-08-26 23:51:43,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 766 transitions, 9316 flow, removed 284 selfloop flow, removed 15 redundant places. [2023-08-26 23:51:43,010 INFO L231 Difference]: Finished difference. Result has 311 places, 610 transitions, 7788 flow [2023-08-26 23:51:43,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=5292, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=7788, PETRI_PLACES=311, PETRI_TRANSITIONS=610} [2023-08-26 23:51:43,011 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 239 predicate places. [2023-08-26 23:51:43,011 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 610 transitions, 7788 flow [2023-08-26 23:51:43,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 467.609756097561) internal successors, (19172), 41 states have internal predecessors, (19172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:51:43,013 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:51:43,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 23:51:43,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:51:43,219 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:51:43,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:51:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1473039493, now seen corresponding path program 5 times [2023-08-26 23:51:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:51:43,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784390772] [2023-08-26 23:51:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:51:43,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:51:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:51:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:51:45,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:51:45,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784390772] [2023-08-26 23:51:45,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784390772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:51:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027714973] [2023-08-26 23:51:45,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:51:45,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:51:45,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:51:45,561 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:51:45,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 23:51:45,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 23:51:45,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:51:45,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-26 23:51:45,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:51:46,775 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:51:46,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2023-08-26 23:51:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:51:47,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:51:51,103 INFO L322 Elim1Store]: treesize reduction 128, result has 65.6 percent of original size [2023-08-26 23:51:51,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 149 treesize of output 334 [2023-08-26 23:51:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:51:51,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027714973] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:51:51,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:51:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 40 [2023-08-26 23:51:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406034787] [2023-08-26 23:51:51,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:51:51,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-26 23:51:51,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:51:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-26 23:51:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2023-08-26 23:51:51,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-26 23:51:51,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 610 transitions, 7788 flow. Second operand has 41 states, 41 states have (on average 467.6341463414634) internal successors, (19173), 41 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:51,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:51:51,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-26 23:51:51,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:51:56,172 INFO L124 PetriNetUnfolderBase]: 4600/8239 cut-off events. [2023-08-26 23:51:56,172 INFO L125 PetriNetUnfolderBase]: For 91815/91815 co-relation queries the response was YES. [2023-08-26 23:51:56,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54804 conditions, 8239 events. 4600/8239 cut-off events. For 91815/91815 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 53932 event pairs, 1083 based on Foata normal form. 16/8255 useless extension candidates. Maximal degree in co-relation 54694. Up to 2516 conditions per place. [2023-08-26 23:51:56,253 INFO L140 encePairwiseOnDemand]: 1458/1476 looper letters, 437 selfloop transitions, 285 changer transitions 18/740 dead transitions. [2023-08-26 23:51:56,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 740 transitions, 11069 flow [2023-08-26 23:51:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 23:51:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 23:51:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 10416 transitions. [2023-08-26 23:51:56,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32076866223207684 [2023-08-26 23:51:56,260 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 10416 transitions. [2023-08-26 23:51:56,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 10416 transitions. [2023-08-26 23:51:56,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:51:56,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 10416 transitions. [2023-08-26 23:51:56,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 473.45454545454544) internal successors, (10416), 22 states have internal predecessors, (10416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:56,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 1476.0) internal successors, (33948), 23 states have internal predecessors, (33948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:56,279 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 1476.0) internal successors, (33948), 23 states have internal predecessors, (33948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:56,279 INFO L175 Difference]: Start difference. First operand has 311 places, 610 transitions, 7788 flow. Second operand 22 states and 10416 transitions. [2023-08-26 23:51:56,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 740 transitions, 11069 flow [2023-08-26 23:51:56,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 740 transitions, 10637 flow, removed 198 selfloop flow, removed 7 redundant places. [2023-08-26 23:51:56,748 INFO L231 Difference]: Finished difference. Result has 330 places, 623 transitions, 8234 flow [2023-08-26 23:51:56,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=7408, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8234, PETRI_PLACES=330, PETRI_TRANSITIONS=623} [2023-08-26 23:51:56,749 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 258 predicate places. [2023-08-26 23:51:56,749 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 623 transitions, 8234 flow [2023-08-26 23:51:56,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 467.6341463414634) internal successors, (19173), 41 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:56,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:51:56,751 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:51:56,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-26 23:51:56,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:51:56,956 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:51:56,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:51:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1629683895, now seen corresponding path program 6 times [2023-08-26 23:51:56,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:51:56,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975948900] [2023-08-26 23:51:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:51:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:51:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:51:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:51:59,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:51:59,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975948900] [2023-08-26 23:51:59,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975948900] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:51:59,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848997440] [2023-08-26 23:51:59,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:51:59,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:51:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:51:59,569 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:51:59,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 23:52:00,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 23:52:00,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:52:00,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-26 23:52:00,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:52:00,948 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:52:00,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2023-08-26 23:52:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:52:01,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:52:05,353 INFO L322 Elim1Store]: treesize reduction 95, result has 67.4 percent of original size [2023-08-26 23:52:05,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 272 [2023-08-26 23:52:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:52:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848997440] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:52:05,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:52:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 12] total 36 [2023-08-26 23:52:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795980763] [2023-08-26 23:52:05,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:52:05,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-26 23:52:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-26 23:52:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2023-08-26 23:52:05,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-26 23:52:05,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 623 transitions, 8234 flow. Second operand has 37 states, 37 states have (on average 467.7567567567568) internal successors, (17307), 37 states have internal predecessors, (17307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:05,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:05,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-26 23:52:05,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:20,198 INFO L124 PetriNetUnfolderBase]: 4874/8749 cut-off events. [2023-08-26 23:52:20,198 INFO L125 PetriNetUnfolderBase]: For 104931/104931 co-relation queries the response was YES. [2023-08-26 23:52:20,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60136 conditions, 8749 events. 4874/8749 cut-off events. For 104931/104931 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 58334 event pairs, 993 based on Foata normal form. 10/8759 useless extension candidates. Maximal degree in co-relation 60020. Up to 2618 conditions per place. [2023-08-26 23:52:20,305 INFO L140 encePairwiseOnDemand]: 1458/1476 looper letters, 366 selfloop transitions, 456 changer transitions 22/844 dead transitions. [2023-08-26 23:52:20,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 844 transitions, 12731 flow [2023-08-26 23:52:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-26 23:52:20,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-26 23:52:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 20301 transitions. [2023-08-26 23:52:20,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31986197768954433 [2023-08-26 23:52:20,318 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 20301 transitions. [2023-08-26 23:52:20,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 20301 transitions. [2023-08-26 23:52:20,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:20,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 20301 transitions. [2023-08-26 23:52:20,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 472.1162790697674) internal successors, (20301), 43 states have internal predecessors, (20301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:20,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 1476.0) internal successors, (64944), 44 states have internal predecessors, (64944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:20,368 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 1476.0) internal successors, (64944), 44 states have internal predecessors, (64944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:20,368 INFO L175 Difference]: Start difference. First operand has 330 places, 623 transitions, 8234 flow. Second operand 43 states and 20301 transitions. [2023-08-26 23:52:20,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 844 transitions, 12731 flow [2023-08-26 23:52:20,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 844 transitions, 12309 flow, removed 73 selfloop flow, removed 15 redundant places. [2023-08-26 23:52:20,983 INFO L231 Difference]: Finished difference. Result has 365 places, 685 transitions, 10139 flow [2023-08-26 23:52:20,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=7929, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=10139, PETRI_PLACES=365, PETRI_TRANSITIONS=685} [2023-08-26 23:52:20,984 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 293 predicate places. [2023-08-26 23:52:20,984 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 685 transitions, 10139 flow [2023-08-26 23:52:20,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 467.7567567567568) internal successors, (17307), 37 states have internal predecessors, (17307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:20,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:20,986 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:20,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 23:52:21,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-26 23:52:21,193 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:52:21,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:21,193 INFO L85 PathProgramCache]: Analyzing trace with hash -793425947, now seen corresponding path program 7 times [2023-08-26 23:52:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:21,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719767316] [2023-08-26 23:52:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:21,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:52:23,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719767316] [2023-08-26 23:52:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719767316] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:52:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466456568] [2023-08-26 23:52:23,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:52:23,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:23,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:52:23,672 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:52:23,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 23:52:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:24,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-26 23:52:24,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:52:24,638 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:52:24,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 268 treesize of output 232 [2023-08-26 23:52:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:52:25,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:52:29,773 INFO L322 Elim1Store]: treesize reduction 128, result has 65.6 percent of original size [2023-08-26 23:52:29,774 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 119 treesize of output 312 [2023-08-26 23:52:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:52:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466456568] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:52:29,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:52:29,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2023-08-26 23:52:29,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018094851] [2023-08-26 23:52:29,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:52:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-26 23:52:29,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-26 23:52:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2023-08-26 23:52:29,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-26 23:52:29,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 685 transitions, 10139 flow. Second operand has 39 states, 39 states have (on average 467.6666666666667) internal successors, (18239), 39 states have internal predecessors, (18239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:29,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:29,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-26 23:52:29,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:44,141 INFO L124 PetriNetUnfolderBase]: 5865/10354 cut-off events. [2023-08-26 23:52:44,142 INFO L125 PetriNetUnfolderBase]: For 139728/139728 co-relation queries the response was YES. [2023-08-26 23:52:44,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76018 conditions, 10354 events. 5865/10354 cut-off events. For 139728/139728 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 69866 event pairs, 1041 based on Foata normal form. 17/10371 useless extension candidates. Maximal degree in co-relation 75899. Up to 3461 conditions per place. [2023-08-26 23:52:44,251 INFO L140 encePairwiseOnDemand]: 1458/1476 looper letters, 511 selfloop transitions, 401 changer transitions 26/938 dead transitions. [2023-08-26 23:52:44,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 938 transitions, 15422 flow [2023-08-26 23:52:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-26 23:52:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-26 23:52:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 16552 transitions. [2023-08-26 23:52:44,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32040263259775453 [2023-08-26 23:52:44,261 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 16552 transitions. [2023-08-26 23:52:44,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 16552 transitions. [2023-08-26 23:52:44,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:44,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 16552 transitions. [2023-08-26 23:52:44,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 472.9142857142857) internal successors, (16552), 35 states have internal predecessors, (16552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:44,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 1476.0) internal successors, (53136), 36 states have internal predecessors, (53136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:44,292 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 1476.0) internal successors, (53136), 36 states have internal predecessors, (53136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:44,293 INFO L175 Difference]: Start difference. First operand has 365 places, 685 transitions, 10139 flow. Second operand 35 states and 16552 transitions. [2023-08-26 23:52:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 938 transitions, 15422 flow [2023-08-26 23:52:44,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 938 transitions, 14841 flow, removed 157 selfloop flow, removed 14 redundant places. [2023-08-26 23:52:45,009 INFO L231 Difference]: Finished difference. Result has 396 places, 777 transitions, 12208 flow [2023-08-26 23:52:45,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=9648, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12208, PETRI_PLACES=396, PETRI_TRANSITIONS=777} [2023-08-26 23:52:45,009 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 324 predicate places. [2023-08-26 23:52:45,010 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 777 transitions, 12208 flow [2023-08-26 23:52:45,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 467.6666666666667) internal successors, (18239), 39 states have internal predecessors, (18239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:45,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:45,012 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:45,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-26 23:52:45,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-26 23:52:45,218 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:52:45,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:45,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1382049101, now seen corresponding path program 8 times [2023-08-26 23:52:45,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:45,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107528912] [2023-08-26 23:52:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:45,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-26 23:52:47,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107528912] [2023-08-26 23:52:47,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107528912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:52:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352197650] [2023-08-26 23:52:47,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:52:47,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:52:47,586 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:52:47,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 23:52:47,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:52:47,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:52:47,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-26 23:52:47,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:52:48,846 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:52:48,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2023-08-26 23:52:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:52:49,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:52:53,766 INFO L322 Elim1Store]: treesize reduction 132, result has 71.4 percent of original size [2023-08-26 23:52:53,767 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 192 treesize of output 456 [2023-08-26 23:52:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:52:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352197650] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:52:54,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:52:54,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 13] total 42 [2023-08-26 23:52:54,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189138565] [2023-08-26 23:52:54,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:52:54,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-26 23:52:54,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-26 23:52:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1586, Unknown=0, NotChecked=0, Total=1806 [2023-08-26 23:52:54,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1476 [2023-08-26 23:52:54,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 777 transitions, 12208 flow. Second operand has 43 states, 43 states have (on average 455.6279069767442) internal successors, (19592), 43 states have internal predecessors, (19592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:54,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:54,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1476 [2023-08-26 23:52:54,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:10,556 INFO L124 PetriNetUnfolderBase]: 6299/11299 cut-off events. [2023-08-26 23:53:10,556 INFO L125 PetriNetUnfolderBase]: For 187741/187741 co-relation queries the response was YES. [2023-08-26 23:53:10,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90134 conditions, 11299 events. 6299/11299 cut-off events. For 187741/187741 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 79561 event pairs, 1115 based on Foata normal form. 10/11309 useless extension candidates. Maximal degree in co-relation 90003. Up to 4879 conditions per place. [2023-08-26 23:53:10,693 INFO L140 encePairwiseOnDemand]: 1455/1476 looper letters, 527 selfloop transitions, 448 changer transitions 22/997 dead transitions. [2023-08-26 23:53:10,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 997 transitions, 17590 flow [2023-08-26 23:53:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-26 23:53:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-26 23:53:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 20217 transitions. [2023-08-26 23:53:10,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3112989652623799 [2023-08-26 23:53:10,705 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 20217 transitions. [2023-08-26 23:53:10,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 20217 transitions. [2023-08-26 23:53:10,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:10,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 20217 transitions. [2023-08-26 23:53:10,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 459.47727272727275) internal successors, (20217), 44 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:10,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 1476.0) internal successors, (66420), 45 states have internal predecessors, (66420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:10,754 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 1476.0) internal successors, (66420), 45 states have internal predecessors, (66420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:10,754 INFO L175 Difference]: Start difference. First operand has 396 places, 777 transitions, 12208 flow. Second operand 44 states and 20217 transitions. [2023-08-26 23:53:10,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 997 transitions, 17590 flow [2023-08-26 23:53:11,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 997 transitions, 16873 flow, removed 215 selfloop flow, removed 14 redundant places. [2023-08-26 23:53:11,956 INFO L231 Difference]: Finished difference. Result has 433 places, 860 transitions, 14384 flow [2023-08-26 23:53:11,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=11543, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=14384, PETRI_PLACES=433, PETRI_TRANSITIONS=860} [2023-08-26 23:53:11,957 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 361 predicate places. [2023-08-26 23:53:11,957 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 860 transitions, 14384 flow [2023-08-26 23:53:11,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 455.6279069767442) internal successors, (19592), 43 states have internal predecessors, (19592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:11,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:11,959 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:11,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-26 23:53:12,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-26 23:53:12,165 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:53:12,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash -448555759, now seen corresponding path program 9 times [2023-08-26 23:53:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:12,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440070211] [2023-08-26 23:53:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:53:14,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440070211] [2023-08-26 23:53:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440070211] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:53:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184626212] [2023-08-26 23:53:14,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:53:14,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:53:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:53:14,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:53:14,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 23:53:15,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 23:53:15,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:53:15,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-26 23:53:15,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:53:15,617 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:53:15,618 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 268 treesize of output 232 [2023-08-26 23:53:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:53:16,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:53:21,416 INFO L322 Elim1Store]: treesize reduction 275, result has 65.1 percent of original size [2023-08-26 23:53:21,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 225 treesize of output 651 [2023-08-26 23:53:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:53:22,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184626212] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:53:22,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:53:22,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 12] total 35 [2023-08-26 23:53:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62736698] [2023-08-26 23:53:22,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:53:22,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-26 23:53:22,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:22,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-26 23:53:22,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2023-08-26 23:53:22,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-26 23:53:22,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 860 transitions, 14384 flow. Second operand has 36 states, 36 states have (on average 467.77777777777777) internal successors, (16840), 36 states have internal predecessors, (16840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:22,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:22,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-26 23:53:22,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:42,681 INFO L124 PetriNetUnfolderBase]: 6369/11616 cut-off events. [2023-08-26 23:53:42,681 INFO L125 PetriNetUnfolderBase]: For 211428/211428 co-relation queries the response was YES. [2023-08-26 23:53:42,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97593 conditions, 11616 events. 6369/11616 cut-off events. For 211428/211428 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 83970 event pairs, 1082 based on Foata normal form. 16/11632 useless extension candidates. Maximal degree in co-relation 97453. Up to 4991 conditions per place. [2023-08-26 23:53:42,826 INFO L140 encePairwiseOnDemand]: 1459/1476 looper letters, 501 selfloop transitions, 506 changer transitions 27/1034 dead transitions. [2023-08-26 23:53:42,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1034 transitions, 18789 flow [2023-08-26 23:53:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-26 23:53:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-26 23:53:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 24989 transitions. [2023-08-26 23:53:42,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194380528710947 [2023-08-26 23:53:42,840 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 24989 transitions. [2023-08-26 23:53:42,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 24989 transitions. [2023-08-26 23:53:42,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:42,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 24989 transitions. [2023-08-26 23:53:42,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 471.49056603773585) internal successors, (24989), 53 states have internal predecessors, (24989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:42,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 1476.0) internal successors, (79704), 54 states have internal predecessors, (79704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:42,896 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 1476.0) internal successors, (79704), 54 states have internal predecessors, (79704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:42,897 INFO L175 Difference]: Start difference. First operand has 433 places, 860 transitions, 14384 flow. Second operand 53 states and 24989 transitions. [2023-08-26 23:53:42,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1034 transitions, 18789 flow [2023-08-26 23:53:44,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1034 transitions, 18288 flow, removed 144 selfloop flow, removed 19 redundant places. [2023-08-26 23:53:44,654 INFO L231 Difference]: Finished difference. Result has 471 places, 887 transitions, 15697 flow [2023-08-26 23:53:44,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=13963, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=472, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=15697, PETRI_PLACES=471, PETRI_TRANSITIONS=887} [2023-08-26 23:53:44,655 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 399 predicate places. [2023-08-26 23:53:44,655 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 887 transitions, 15697 flow [2023-08-26 23:53:44,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 467.77777777777777) internal successors, (16840), 36 states have internal predecessors, (16840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:44,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:44,657 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:44,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-26 23:53:44,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:53:44,862 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:53:44,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1490056875, now seen corresponding path program 10 times [2023-08-26 23:53:44,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:44,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693429405] [2023-08-26 23:53:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:44,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-26 23:53:47,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:47,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693429405] [2023-08-26 23:53:47,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693429405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:53:47,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466022103] [2023-08-26 23:53:47,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:53:47,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:53:47,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:53:47,271 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:53:47,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 23:53:47,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:53:47,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:53:47,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-26 23:53:47,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:53:48,626 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:53:48,626 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 80 [2023-08-26 23:53:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:53:49,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:53:54,315 INFO L322 Elim1Store]: treesize reduction 220, result has 67.1 percent of original size [2023-08-26 23:53:54,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 221 treesize of output 599 [2023-08-26 23:53:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:53:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466022103] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:53:55,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:53:55,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 13] total 42 [2023-08-26 23:53:55,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137719342] [2023-08-26 23:53:55,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:53:55,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-26 23:53:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:55,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-26 23:53:55,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2023-08-26 23:53:55,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1476 [2023-08-26 23:53:55,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 887 transitions, 15697 flow. Second operand has 43 states, 43 states have (on average 455.6279069767442) internal successors, (19592), 43 states have internal predecessors, (19592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:55,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:55,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1476 [2023-08-26 23:53:55,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:10,844 INFO L124 PetriNetUnfolderBase]: 6656/12222 cut-off events. [2023-08-26 23:54:10,845 INFO L125 PetriNetUnfolderBase]: For 243037/243037 co-relation queries the response was YES. [2023-08-26 23:54:11,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106867 conditions, 12222 events. 6656/12222 cut-off events. For 243037/243037 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 89742 event pairs, 1413 based on Foata normal form. 27/12249 useless extension candidates. Maximal degree in co-relation 106722. Up to 6830 conditions per place. [2023-08-26 23:54:11,090 INFO L140 encePairwiseOnDemand]: 1455/1476 looper letters, 590 selfloop transitions, 432 changer transitions 35/1057 dead transitions. [2023-08-26 23:54:11,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1057 transitions, 20760 flow [2023-08-26 23:54:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-26 23:54:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-26 23:54:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 17465 transitions. [2023-08-26 23:54:11,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3113856796462701 [2023-08-26 23:54:11,101 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 17465 transitions. [2023-08-26 23:54:11,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 17465 transitions. [2023-08-26 23:54:11,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:11,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 17465 transitions. [2023-08-26 23:54:11,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 459.60526315789474) internal successors, (17465), 38 states have internal predecessors, (17465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:54:11,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 1476.0) internal successors, (57564), 39 states have internal predecessors, (57564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:54:11,143 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 1476.0) internal successors, (57564), 39 states have internal predecessors, (57564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:54:11,143 INFO L175 Difference]: Start difference. First operand has 471 places, 887 transitions, 15697 flow. Second operand 38 states and 17465 transitions. [2023-08-26 23:54:11,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1057 transitions, 20760 flow [2023-08-26 23:54:13,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1057 transitions, 20019 flow, removed 43 selfloop flow, removed 37 redundant places. [2023-08-26 23:54:13,722 INFO L231 Difference]: Finished difference. Result has 468 places, 929 transitions, 16945 flow [2023-08-26 23:54:13,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=15028, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=16945, PETRI_PLACES=468, PETRI_TRANSITIONS=929} [2023-08-26 23:54:13,724 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 396 predicate places. [2023-08-26 23:54:13,724 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 929 transitions, 16945 flow [2023-08-26 23:54:13,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 455.6279069767442) internal successors, (19592), 43 states have internal predecessors, (19592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:54:13,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:13,726 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:54:13,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-26 23:54:13,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-26 23:54:13,927 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-26 23:54:13,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:13,927 INFO L85 PathProgramCache]: Analyzing trace with hash 470141121, now seen corresponding path program 11 times [2023-08-26 23:54:13,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:13,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772022898] [2023-08-26 23:54:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:13,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:54:16,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772022898] [2023-08-26 23:54:16,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772022898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:54:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136238968] [2023-08-26 23:54:16,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:54:16,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:54:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:54:16,709 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:54:16,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 23:54:17,094 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 23:54:17,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:54:17,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-26 23:54:17,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:54:18,011 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:54:18,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2023-08-26 23:54:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-26 23:54:18,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:54:23,699 INFO L322 Elim1Store]: treesize reduction 128, result has 65.6 percent of original size [2023-08-26 23:54:23,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 149 treesize of output 334 [2023-08-27 00:00:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:00:46,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136238968] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:46,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:46,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2023-08-27 00:00:46,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562560011] [2023-08-27 00:00:46,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:46,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 00:00:46,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 00:00:46,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2023-08-27 00:00:46,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-27 00:00:46,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 929 transitions, 16945 flow. Second operand has 39 states, 39 states have (on average 467.6923076923077) internal successors, (18240), 39 states have internal predecessors, (18240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:46,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:46,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-27 00:00:46,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:01:02,465 INFO L124 PetriNetUnfolderBase]: 6727/12365 cut-off events. [2023-08-27 00:01:02,474 INFO L125 PetriNetUnfolderBase]: For 268005/268005 co-relation queries the response was YES. [2023-08-27 00:01:02,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111815 conditions, 12365 events. 6727/12365 cut-off events. For 268005/268005 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 90858 event pairs, 1219 based on Foata normal form. 15/12380 useless extension candidates. Maximal degree in co-relation 111670. Up to 3719 conditions per place. [2023-08-27 00:01:02,671 INFO L140 encePairwiseOnDemand]: 1457/1476 looper letters, 538 selfloop transitions, 568 changer transitions 24/1130 dead transitions. [2023-08-27 00:01:02,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 1130 transitions, 22356 flow [2023-08-27 00:01:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-27 00:01:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-27 00:01:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 23130 transitions. [2023-08-27 00:01:02,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3198108511697362 [2023-08-27 00:01:02,685 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 23130 transitions. [2023-08-27 00:01:02,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 23130 transitions. [2023-08-27 00:01:02,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:01:02,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 23130 transitions. [2023-08-27 00:01:02,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 472.0408163265306) internal successors, (23130), 49 states have internal predecessors, (23130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:02,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 1476.0) internal successors, (73800), 50 states have internal predecessors, (73800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:02,750 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 1476.0) internal successors, (73800), 50 states have internal predecessors, (73800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:02,750 INFO L175 Difference]: Start difference. First operand has 468 places, 929 transitions, 16945 flow. Second operand 49 states and 23130 transitions. [2023-08-27 00:01:02,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 1130 transitions, 22356 flow [2023-08-27 00:01:06,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1130 transitions, 21924 flow, removed 58 selfloop flow, removed 23 redundant places. [2023-08-27 00:01:06,213 INFO L231 Difference]: Finished difference. Result has 499 places, 959 transitions, 18588 flow [2023-08-27 00:01:06,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=16553, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=537, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=18588, PETRI_PLACES=499, PETRI_TRANSITIONS=959} [2023-08-27 00:01:06,214 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 427 predicate places. [2023-08-27 00:01:06,214 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 959 transitions, 18588 flow [2023-08-27 00:01:06,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 467.6923076923077) internal successors, (18240), 39 states have internal predecessors, (18240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:06,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:01:06,217 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:01:06,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 00:01:06,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:06,424 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-27 00:01:06,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:01:06,425 INFO L85 PathProgramCache]: Analyzing trace with hash -200920965, now seen corresponding path program 12 times [2023-08-27 00:01:06,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:01:06,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848252779] [2023-08-27 00:01:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:01:06,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:01:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:01:08,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:01:08,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848252779] [2023-08-27 00:01:08,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848252779] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:01:08,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439752881] [2023-08-27 00:01:08,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:01:08,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:08,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:01:08,968 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:01:08,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 00:01:09,420 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 00:01:09,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:01:09,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-27 00:01:09,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:01:10,041 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:01:10,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 268 treesize of output 232 [2023-08-27 00:01:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:01:10,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:01:15,100 INFO L322 Elim1Store]: treesize reduction 132, result has 71.4 percent of original size [2023-08-27 00:01:15,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 176 treesize of output 440 [2023-08-27 00:01:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:01:15,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439752881] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:01:15,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:01:15,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 40 [2023-08-27 00:01:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190859773] [2023-08-27 00:01:15,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:01:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-27 00:01:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:01:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-27 00:01:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1422, Unknown=0, NotChecked=0, Total=1640 [2023-08-27 00:01:15,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-27 00:01:15,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 959 transitions, 18588 flow. Second operand has 41 states, 41 states have (on average 467.6341463414634) internal successors, (19173), 41 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:15,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:01:15,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-27 00:01:15,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:01:33,877 INFO L124 PetriNetUnfolderBase]: 6739/12440 cut-off events. [2023-08-27 00:01:33,878 INFO L125 PetriNetUnfolderBase]: For 292693/292693 co-relation queries the response was YES. [2023-08-27 00:01:34,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116487 conditions, 12440 events. 6739/12440 cut-off events. For 292693/292693 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 92227 event pairs, 1198 based on Foata normal form. 7/12447 useless extension candidates. Maximal degree in co-relation 116334. Up to 5703 conditions per place. [2023-08-27 00:01:34,082 INFO L140 encePairwiseOnDemand]: 1458/1476 looper letters, 517 selfloop transitions, 566 changer transitions 18/1101 dead transitions. [2023-08-27 00:01:34,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1101 transitions, 22818 flow [2023-08-27 00:01:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-27 00:01:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-27 00:01:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 24033 transitions. [2023-08-27 00:01:34,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31926510441575007 [2023-08-27 00:01:34,097 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 24033 transitions. [2023-08-27 00:01:34,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 24033 transitions. [2023-08-27 00:01:34,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:01:34,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 24033 transitions. [2023-08-27 00:01:34,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 471.2352941176471) internal successors, (24033), 51 states have internal predecessors, (24033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:34,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 1476.0) internal successors, (76752), 52 states have internal predecessors, (76752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:34,166 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 1476.0) internal successors, (76752), 52 states have internal predecessors, (76752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:34,166 INFO L175 Difference]: Start difference. First operand has 499 places, 959 transitions, 18588 flow. Second operand 51 states and 24033 transitions. [2023-08-27 00:01:34,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 1101 transitions, 22818 flow [2023-08-27 00:01:37,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1101 transitions, 22006 flow, removed 93 selfloop flow, removed 27 redundant places. [2023-08-27 00:01:37,030 INFO L231 Difference]: Finished difference. Result has 522 places, 969 transitions, 19289 flow [2023-08-27 00:01:37,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=17761, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=955, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=546, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=19289, PETRI_PLACES=522, PETRI_TRANSITIONS=969} [2023-08-27 00:01:37,032 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 450 predicate places. [2023-08-27 00:01:37,032 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 969 transitions, 19289 flow [2023-08-27 00:01:37,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 467.6341463414634) internal successors, (19173), 41 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:37,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:01:37,034 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:01:37,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 00:01:37,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:37,242 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-27 00:01:37,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:01:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash 937153491, now seen corresponding path program 13 times [2023-08-27 00:01:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:01:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457931332] [2023-08-27 00:01:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:01:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:01:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:01:40,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:01:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457931332] [2023-08-27 00:01:40,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457931332] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:01:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907788406] [2023-08-27 00:01:40,107 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:01:40,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:40,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:01:40,108 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:01:40,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 00:01:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:40,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-27 00:01:40,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:01:41,384 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:01:41,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 80 [2023-08-27 00:01:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:01:41,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:01:48,337 INFO L322 Elim1Store]: treesize reduction 95, result has 67.4 percent of original size [2023-08-27 00:01:48,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 272 [2023-08-27 00:01:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:01:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907788406] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:01:48,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:01:48,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 40 [2023-08-27 00:01:48,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500181580] [2023-08-27 00:01:48,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:01:48,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-27 00:01:48,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:01:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-27 00:01:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2023-08-27 00:01:48,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 466 out of 1476 [2023-08-27 00:01:48,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 969 transitions, 19289 flow. Second operand has 41 states, 41 states have (on average 467.6341463414634) internal successors, (19173), 41 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:48,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:01:48,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 466 of 1476 [2023-08-27 00:01:48,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:02:01,482 INFO L124 PetriNetUnfolderBase]: 6792/12545 cut-off events. [2023-08-27 00:02:01,483 INFO L125 PetriNetUnfolderBase]: For 308198/308198 co-relation queries the response was YES. [2023-08-27 00:02:01,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120559 conditions, 12545 events. 6792/12545 cut-off events. For 308198/308198 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 92869 event pairs, 1246 based on Foata normal form. 15/12560 useless extension candidates. Maximal degree in co-relation 120406. Up to 4705 conditions per place. [2023-08-27 00:02:01,688 INFO L140 encePairwiseOnDemand]: 1458/1476 looper letters, 515 selfloop transitions, 594 changer transitions 26/1135 dead transitions. [2023-08-27 00:02:01,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 1135 transitions, 24034 flow [2023-08-27 00:02:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-27 00:02:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-27 00:02:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 24522 transitions. [2023-08-27 00:02:01,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194965603502189 [2023-08-27 00:02:01,704 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 24522 transitions. [2023-08-27 00:02:01,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 24522 transitions. [2023-08-27 00:02:01,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:02:01,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 24522 transitions. [2023-08-27 00:02:01,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 471.5769230769231) internal successors, (24522), 52 states have internal predecessors, (24522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:01,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 1476.0) internal successors, (78228), 53 states have internal predecessors, (78228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:01,952 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 1476.0) internal successors, (78228), 53 states have internal predecessors, (78228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:01,953 INFO L175 Difference]: Start difference. First operand has 522 places, 969 transitions, 19289 flow. Second operand 52 states and 24522 transitions. [2023-08-27 00:02:01,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 1135 transitions, 24034 flow [2023-08-27 00:02:05,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1135 transitions, 23015 flow, removed 38 selfloop flow, removed 45 redundant places. [2023-08-27 00:02:05,064 INFO L231 Difference]: Finished difference. Result has 525 places, 987 transitions, 20227 flow [2023-08-27 00:02:05,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1476, PETRI_DIFFERENCE_MINUEND_FLOW=18262, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=965, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=567, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=20227, PETRI_PLACES=525, PETRI_TRANSITIONS=987} [2023-08-27 00:02:05,067 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 453 predicate places. [2023-08-27 00:02:05,067 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 987 transitions, 20227 flow [2023-08-27 00:02:05,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 467.6341463414634) internal successors, (19173), 41 states have internal predecessors, (19173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:05,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:02:05,070 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:02:05,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 00:02:05,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:02:05,284 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-27 00:02:05,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:02:05,284 INFO L85 PathProgramCache]: Analyzing trace with hash 504339439, now seen corresponding path program 14 times [2023-08-27 00:02:05,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:02:05,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718756585] [2023-08-27 00:02:05,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:02:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:02:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:02:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-27 00:02:07,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:02:07,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718756585] [2023-08-27 00:02:07,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718756585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:02:07,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140287661] [2023-08-27 00:02:07,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:02:07,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:02:07,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:02:07,795 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:02:07,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 00:02:08,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:02:08,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:02:08,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-27 00:02:08,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:02:08,820 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:02:08,821 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 268 treesize of output 232 [2023-08-27 00:02:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:02:09,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:02:15,539 INFO L322 Elim1Store]: treesize reduction 275, result has 65.1 percent of original size [2023-08-27 00:02:15,540 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 225 treesize of output 651 [2023-08-27 00:02:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 00:02:16,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140287661] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:02:16,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:02:16,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 13] total 42 [2023-08-27 00:02:16,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822936642] [2023-08-27 00:02:16,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:02:16,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-27 00:02:16,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:02:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-27 00:02:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2023-08-27 00:02:16,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1476 [2023-08-27 00:02:16,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 987 transitions, 20227 flow. Second operand has 43 states, 43 states have (on average 449.6279069767442) internal successors, (19334), 43 states have internal predecessors, (19334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:16,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:02:16,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1476 [2023-08-27 00:02:16,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:02:43,196 INFO L124 PetriNetUnfolderBase]: 6809/12608 cut-off events. [2023-08-27 00:02:43,197 INFO L125 PetriNetUnfolderBase]: For 288918/288918 co-relation queries the response was YES. [2023-08-27 00:02:43,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119881 conditions, 12608 events. 6809/12608 cut-off events. For 288918/288918 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 94081 event pairs, 1142 based on Foata normal form. 11/12619 useless extension candidates. Maximal degree in co-relation 119725. Up to 5465 conditions per place. [2023-08-27 00:02:43,417 INFO L140 encePairwiseOnDemand]: 1455/1476 looper letters, 507 selfloop transitions, 617 changer transitions 24/1148 dead transitions. [2023-08-27 00:02:43,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 1148 transitions, 24321 flow [2023-08-27 00:02:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-27 00:02:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-27 00:02:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 30342 transitions. [2023-08-27 00:02:43,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30681956073292077 [2023-08-27 00:02:43,436 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 30342 transitions. [2023-08-27 00:02:43,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 30342 transitions. [2023-08-27 00:02:43,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:02:43,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 30342 transitions. [2023-08-27 00:02:43,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 452.86567164179104) internal successors, (30342), 67 states have internal predecessors, (30342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:43,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 1476.0) internal successors, (100368), 68 states have internal predecessors, (100368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:43,524 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 1476.0) internal successors, (100368), 68 states have internal predecessors, (100368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:02:43,524 INFO L175 Difference]: Start difference. First operand has 525 places, 987 transitions, 20227 flow. Second operand 67 states and 30342 transitions. [2023-08-27 00:02:43,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 1148 transitions, 24321 flow Received shutdown request... [2023-08-27 00:02:45,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:02:45,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:02:45,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (80 of 81 remaining) [2023-08-27 00:02:45,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 00:02:45,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:02:45,907 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 00:02:45,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 81 remaining) [2023-08-27 00:02:45,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 81 remaining) [2023-08-27 00:02:45,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 81 remaining) [2023-08-27 00:02:45,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 81 remaining) [2023-08-27 00:02:45,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 81 remaining) [2023-08-27 00:02:45,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 81 remaining) [2023-08-27 00:02:45,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 81 remaining) [2023-08-27 00:02:45,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 81 remaining) [2023-08-27 00:02:45,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 81 remaining) [2023-08-27 00:02:45,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 81 remaining) [2023-08-27 00:02:45,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 81 remaining) [2023-08-27 00:02:45,914 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 81 remaining) [2023-08-27 00:02:45,914 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 81 remaining) [2023-08-27 00:02:45,914 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:02:45,918 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:02:45,918 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:02:45,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:02:45 BasicIcfg [2023-08-27 00:02:45,920 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:02:45,921 INFO L158 Benchmark]: Toolchain (without parser) took 828496.05ms. Allocated memory was 337.6MB in the beginning and 4.1GB in the end (delta: 3.8GB). Free memory was 313.3MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. [2023-08-27 00:02:45,921 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 337.6MB. Free memory is still 313.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:02:45,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.52ms. Allocated memory is still 337.6MB. Free memory was 313.3MB in the beginning and 300.1MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 00:02:45,921 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.33ms. Allocated memory is still 337.6MB. Free memory was 300.1MB in the beginning and 296.5MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:02:45,921 INFO L158 Benchmark]: Boogie Preprocessor took 50.27ms. Allocated memory is still 337.6MB. Free memory was 296.5MB in the beginning and 293.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 00:02:45,921 INFO L158 Benchmark]: RCFGBuilder took 783.64ms. Allocated memory is still 337.6MB. Free memory was 293.9MB in the beginning and 306.6MB in the end (delta: -12.8MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. [2023-08-27 00:02:45,922 INFO L158 Benchmark]: TraceAbstraction took 827371.15ms. Allocated memory was 337.6MB in the beginning and 4.1GB in the end (delta: 3.8GB). Free memory was 306.5MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. [2023-08-27 00:02:45,923 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 337.6MB. Free memory is still 313.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 229.52ms. Allocated memory is still 337.6MB. Free memory was 313.3MB in the beginning and 300.1MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.33ms. Allocated memory is still 337.6MB. Free memory was 300.1MB in the beginning and 296.5MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.27ms. Allocated memory is still 337.6MB. Free memory was 296.5MB in the beginning and 293.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 783.64ms. Allocated memory is still 337.6MB. Free memory was 293.9MB in the beginning and 306.6MB in the end (delta: -12.8MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. * TraceAbstraction took 827371.15ms. Allocated memory was 337.6MB in the beginning and 4.1GB in the end (delta: 3.8GB). Free memory was 306.5MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.4s, 567 PlacesBefore, 72 PlacesAfterwards, 621 TransitionsBefore, 73 TransitionsAfterwards, 105228 CoEnabledTransitionPairs, 8 FixpointIterations, 157 TrivialSequentialCompositions, 481 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 133 ConcurrentYvCompositions, 53 ChoiceCompositions, 844 TotalNumberOfCompositions, 102639 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 100163, independent: 100032, independent conditional: 0, independent unconditional: 100032, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 62206, independent: 62180, independent conditional: 0, independent unconditional: 62180, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100163, independent: 37852, independent conditional: 0, independent unconditional: 37852, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 62206, unknown conditional: 0, unknown unconditional: 62206] , Statistics on independence cache: Total cache size (in pairs): 352, Positive cache size: 341, Positive conditional cache size: 0, Positive unconditional cache size: 341, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 968 locations, 81 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 827.2s, OverallIterations: 44, TraceHistogramMax: 5, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 261.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 33.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7292 SdHoareTripleChecker+Valid, 28.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7292 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 25.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 220 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1714 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30987 IncrementalHoareTripleChecker+Invalid, 32921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1714 mSolverCounterUnsat, 0 mSDtfsCounter, 30987 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2252 GetRequests, 991 SyntacticMatches, 7 SemanticMatches, 1254 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 28693 ImplicationChecksByTransitivity, 178.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20227occurred in iteration=43, InterpolantAutomatonStates: 695, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 517.0s InterpolantComputationTime, 1621 NumberOfCodeBlocks, 1597 NumberOfCodeBlocksAsserted, 87 NumberOfCheckSat, 2065 ConstructedInterpolants, 37 QuantifiedInterpolants, 59270 SizeOfPredicates, 806 NumberOfNonLiveVariables, 6783 ConjunctsInSsa, 854 ConjunctsInUnsatCore, 87 InterpolantComputations, 25 PerfectInterpolantSequences, 2227/2431 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown