/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/pthread-ext/35_double_lock_p3_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:01:51,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:01:51,545 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 21:01:51,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:01:51,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:01:51,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:01:51,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:01:51,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:01:51,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:01:51,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:01:51,584 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:01:51,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:01:51,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:01:51,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:01:51,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:01:51,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:01:51,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:01:51,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:01:51,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:01:51,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:01:51,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:01:51,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:01:51,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:01:51,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:01:51,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:01:51,590 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:01:51,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:01:51,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:01:51,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:01:51,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:01:51,592 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:01:51,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:01:51,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:01:51,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:01:51,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:01:51,593 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:01:51,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:01:51,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:01:51,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:01:51,889 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:01:51,889 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:01:51,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-26 21:01:53,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:01:53,350 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:01:53,350 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-26 21:01:53,368 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0818bc082/9a62c32ef7aa4651934dee520158ba05/FLAG256ba6887 [2023-08-26 21:01:53,378 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0818bc082/9a62c32ef7aa4651934dee520158ba05 [2023-08-26 21:01:53,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:01:53,382 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:01:53,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:01:53,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:01:53,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:01:53,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482dda6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53, skipping insertion in model container [2023-08-26 21:01:53,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,425 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:01:53,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:01:53,775 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:01:53,804 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-26 21:01:53,805 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-26 21:01:53,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:01:53,865 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:01:53,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53 WrapperNode [2023-08-26 21:01:53,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:01:53,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:01:53,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:01:53,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:01:53,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,935 INFO L138 Inliner]: procedures = 172, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 137 [2023-08-26 21:01:53,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:01:53,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:01:53,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:01:53,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:01:53,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,964 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,977 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:01:53,980 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:01:53,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:01:53,980 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:01:53,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (1/1) ... [2023-08-26 21:01:53,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:01:54,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:01:54,017 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 21:01:54,025 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 21:01:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 21:01:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-26 21:01:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-26 21:01:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-26 21:01:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-26 21:01:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:01:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:01:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:01:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:01:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:01:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:01:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:01:54,056 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 21:01:54,182 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:01:54,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:01:54,356 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:01:54,502 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:01:54,503 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 21:01:54,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:01:54 BoogieIcfgContainer [2023-08-26 21:01:54,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:01:54,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:01:54,506 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:01:54,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:01:54,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:01:53" (1/3) ... [2023-08-26 21:01:54,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b833cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:01:54, skipping insertion in model container [2023-08-26 21:01:54,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:53" (2/3) ... [2023-08-26 21:01:54,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b833cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:01:54, skipping insertion in model container [2023-08-26 21:01:54,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:01:54" (3/3) ... [2023-08-26 21:01:54,511 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-08-26 21:01:54,526 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:01:54,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 21:01:54,526 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:01:54,579 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:01:54,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 202 flow [2023-08-26 21:01:54,658 INFO L124 PetriNetUnfolderBase]: 7/105 cut-off events. [2023-08-26 21:01:54,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:01:54,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 105 events. 7/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-26 21:01:54,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 202 flow [2023-08-26 21:01:54,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 95 transitions, 198 flow [2023-08-26 21:01:54,670 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:01:54,677 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 95 transitions, 198 flow [2023-08-26 21:01:54,679 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 95 transitions, 198 flow [2023-08-26 21:01:54,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 95 transitions, 198 flow [2023-08-26 21:01:54,701 INFO L124 PetriNetUnfolderBase]: 7/105 cut-off events. [2023-08-26 21:01:54,701 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:01:54,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 105 events. 7/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-26 21:01:54,704 INFO L119 LiptonReduction]: Number of co-enabled transitions 3124 [2023-08-26 21:01:57,488 INFO L134 LiptonReduction]: Checked pairs total: 6212 [2023-08-26 21:01:57,489 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-26 21:01:57,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:01:57,505 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;@5966796a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:01:57,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-26 21:01:57,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:01:57,509 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-08-26 21:01:57,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:01:57,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:57,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:01:57,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:01:57,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash 550677678, now seen corresponding path program 1 times [2023-08-26 21:01:57,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:57,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070497363] [2023-08-26 21:01:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:01:57,705 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 21:01:57,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:01:57,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070497363] [2023-08-26 21:01:57,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070497363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:01:57,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:01:57,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:01:57,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246135851] [2023-08-26 21:01:57,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:01:57,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:01:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:01:57,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:01:57,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:01:57,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 187 [2023-08-26 21:01:57,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:57,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:01:57,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 187 [2023-08-26 21:01:57,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:01:57,897 INFO L124 PetriNetUnfolderBase]: 388/645 cut-off events. [2023-08-26 21:01:57,897 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:01:57,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 645 events. 388/645 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2572 event pairs, 144 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 1293. Up to 395 conditions per place. [2023-08-26 21:01:57,907 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 26 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-08-26 21:01:57,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 136 flow [2023-08-26 21:01:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:01:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:01:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-26 21:01:57,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474153297682709 [2023-08-26 21:01:57,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-26 21:01:57,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-26 21:01:57,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:01:57,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-26 21:01:57,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:57,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:57,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:57,935 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 251 transitions. [2023-08-26 21:01:57,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 136 flow [2023-08-26 21:01:57,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:01:57,940 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 80 flow [2023-08-26 21:01:57,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-26 21:01:57,944 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-08-26 21:01:57,945 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 80 flow [2023-08-26 21:01:57,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:57,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:57,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 21:01:57,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:01:57,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:01:57,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash -107810557, now seen corresponding path program 1 times [2023-08-26 21:01:57,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456460129] [2023-08-26 21:01:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:01:58,044 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 21:01:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:01:58,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456460129] [2023-08-26 21:01:58,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456460129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:01:58,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:01:58,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:01:58,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076780573] [2023-08-26 21:01:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:01:58,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:01:58,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:01:58,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:01:58,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:01:58,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 187 [2023-08-26 21:01:58,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:01:58,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 187 [2023-08-26 21:01:58,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:01:58,158 INFO L124 PetriNetUnfolderBase]: 386/649 cut-off events. [2023-08-26 21:01:58,158 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-08-26 21:01:58,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 649 events. 386/649 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2654 event pairs, 119 based on Foata normal form. 3/592 useless extension candidates. Maximal degree in co-relation 1412. Up to 370 conditions per place. [2023-08-26 21:01:58,163 INFO L140 encePairwiseOnDemand]: 175/187 looper letters, 30 selfloop transitions, 10 changer transitions 0/42 dead transitions. [2023-08-26 21:01:58,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 193 flow [2023-08-26 21:01:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:01:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:01:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2023-08-26 21:01:58,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44919786096256686 [2023-08-26 21:01:58,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2023-08-26 21:01:58,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2023-08-26 21:01:58,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:01:58,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2023-08-26 21:01:58,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,169 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 80 flow. Second operand 3 states and 252 transitions. [2023-08-26 21:01:58,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 193 flow [2023-08-26 21:01:58,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:01:58,171 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 141 flow [2023-08-26 21:01:58,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-26 21:01:58,172 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-08-26 21:01:58,172 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 141 flow [2023-08-26 21:01:58,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:58,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:01:58,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:01:58,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:01:58,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash 952840634, now seen corresponding path program 1 times [2023-08-26 21:01:58,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:58,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966828592] [2023-08-26 21:01:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:01:58,265 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 21:01:58,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:01:58,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966828592] [2023-08-26 21:01:58,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966828592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:01:58,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:01:58,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:01:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757613313] [2023-08-26 21:01:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:01:58,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:01:58,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:01:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:01:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:01:58,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 187 [2023-08-26 21:01:58,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:01:58,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 187 [2023-08-26 21:01:58,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:01:58,406 INFO L124 PetriNetUnfolderBase]: 366/617 cut-off events. [2023-08-26 21:01:58,406 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2023-08-26 21:01:58,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 617 events. 366/617 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2504 event pairs, 102 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 1528. Up to 338 conditions per place. [2023-08-26 21:01:58,411 INFO L140 encePairwiseOnDemand]: 175/187 looper letters, 33 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2023-08-26 21:01:58,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 249 flow [2023-08-26 21:01:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:01:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:01:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2023-08-26 21:01:58,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40240641711229946 [2023-08-26 21:01:58,414 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2023-08-26 21:01:58,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2023-08-26 21:01:58,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:01:58,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2023-08-26 21:01:58,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,419 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,419 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 141 flow. Second operand 4 states and 301 transitions. [2023-08-26 21:01:58,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 249 flow [2023-08-26 21:01:58,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:01:58,425 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 139 flow [2023-08-26 21:01:58,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-26 21:01:58,427 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-08-26 21:01:58,427 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 139 flow [2023-08-26 21:01:58,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:58,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:01:58,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:01:58,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:01:58,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash 952840606, now seen corresponding path program 1 times [2023-08-26 21:01:58,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:58,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580844846] [2023-08-26 21:01:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:01:58,548 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 21:01:58,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:01:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580844846] [2023-08-26 21:01:58,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580844846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:01:58,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:01:58,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:01:58,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164426716] [2023-08-26 21:01:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:01:58,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:01:58,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:01:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:01:58,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:01:58,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 187 [2023-08-26 21:01:58,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:01:58,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 187 [2023-08-26 21:01:58,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:01:58,653 INFO L124 PetriNetUnfolderBase]: 322/547 cut-off events. [2023-08-26 21:01:58,653 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2023-08-26 21:01:58,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 547 events. 322/547 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2176 event pairs, 93 based on Foata normal form. 15/562 useless extension candidates. Maximal degree in co-relation 1346. Up to 330 conditions per place. [2023-08-26 21:01:58,657 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 32 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2023-08-26 21:01:58,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 226 flow [2023-08-26 21:01:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:01:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:01:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2023-08-26 21:01:58,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890374331550802 [2023-08-26 21:01:58,658 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 291 transitions. [2023-08-26 21:01:58,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 291 transitions. [2023-08-26 21:01:58,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:01:58,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 291 transitions. [2023-08-26 21:01:58,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,662 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 139 flow. Second operand 4 states and 291 transitions. [2023-08-26 21:01:58,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 226 flow [2023-08-26 21:01:58,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 214 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 21:01:58,664 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 139 flow [2023-08-26 21:01:58,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-26 21:01:58,665 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-26 21:01:58,665 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 139 flow [2023-08-26 21:01:58,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:58,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:58,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-26 21:01:58,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:01:58,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 21:01:58,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -526784060, now seen corresponding path program 1 times [2023-08-26 21:01:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:58,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605091761] [2023-08-26 21:01:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:58,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:01:58,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:01:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:01:58,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:01:58,699 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:01:58,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-26 21:01:58,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-26 21:01:58,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-26 21:01:58,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-26 21:01:58,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-26 21:01:58,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-26 21:01:58,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-26 21:01:58,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-26 21:01:58,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-26 21:01:58,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONASSERT (10 of 20 remaining) [2023-08-26 21:01:58,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-08-26 21:01:58,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-26 21:01:58,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-26 21:01:58,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-26 21:01:58,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-26 21:01:58,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-26 21:01:58,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-26 21:01:58,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-26 21:01:58,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-26 21:01:58,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONASSERT (0 of 20 remaining) [2023-08-26 21:01:58,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:01:58,705 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 21:01:58,707 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:01:58,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 21:01:58,747 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:01:58,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 158 transitions, 340 flow [2023-08-26 21:01:58,769 INFO L124 PetriNetUnfolderBase]: 9/161 cut-off events. [2023-08-26 21:01:58,770 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:01:58,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 161 events. 9/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 325 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 170. Up to 6 conditions per place. [2023-08-26 21:01:58,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 158 transitions, 340 flow [2023-08-26 21:01:58,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 139 transitions, 293 flow [2023-08-26 21:01:58,773 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:01:58,773 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 139 transitions, 293 flow [2023-08-26 21:01:58,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 139 transitions, 293 flow [2023-08-26 21:01:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 139 transitions, 293 flow [2023-08-26 21:01:58,792 INFO L124 PetriNetUnfolderBase]: 9/161 cut-off events. [2023-08-26 21:01:58,792 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:01:58,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 161 events. 9/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 325 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 149. Up to 6 conditions per place. [2023-08-26 21:01:58,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 9522 [2023-08-26 21:02:01,412 INFO L134 LiptonReduction]: Checked pairs total: 29474 [2023-08-26 21:02:01,412 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-26 21:02:01,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:02:01,415 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;@5966796a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:02:01,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-26 21:02:01,417 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:02:01,417 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-08-26 21:02:01,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:02:01,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:01,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:02:01,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-26 21:02:01,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:01,418 INFO L85 PathProgramCache]: Analyzing trace with hash 868659935, now seen corresponding path program 1 times [2023-08-26 21:02:01,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:01,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555917489] [2023-08-26 21:02:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:02:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:02:01,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:02:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555917489] [2023-08-26 21:02:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555917489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:02:01,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:02:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:02:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795246883] [2023-08-26 21:02:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:02:01,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:02:01,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:02:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:02:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:02:01,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 272 [2023-08-26 21:02:01,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:01,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:02:01,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 272 [2023-08-26 21:02:01,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:02:02,893 INFO L124 PetriNetUnfolderBase]: 13128/18537 cut-off events. [2023-08-26 21:02:02,893 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-08-26 21:02:02,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37404 conditions, 18537 events. 13128/18537 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 116436 event pairs, 5213 based on Foata normal form. 864/13310 useless extension candidates. Maximal degree in co-relation 37393. Up to 17989 conditions per place. [2023-08-26 21:02:03,023 INFO L140 encePairwiseOnDemand]: 259/272 looper letters, 63 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-26 21:02:03,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 70 transitions, 292 flow [2023-08-26 21:02:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:02:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:02:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2023-08-26 21:02:03,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49754901960784315 [2023-08-26 21:02:03,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 406 transitions. [2023-08-26 21:02:03,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 406 transitions. [2023-08-26 21:02:03,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:02:03,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 406 transitions. [2023-08-26 21:02:03,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:03,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:03,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:03,028 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 139 flow. Second operand 3 states and 406 transitions. [2023-08-26 21:02:03,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 70 transitions, 292 flow [2023-08-26 21:02:03,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 289 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 21:02:03,031 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 155 flow [2023-08-26 21:02:03,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-08-26 21:02:03,032 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-08-26 21:02:03,032 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 155 flow [2023-08-26 21:02:03,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:03,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:03,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:02:03,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:02:03,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-26 21:02:03,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1441472651, now seen corresponding path program 1 times [2023-08-26 21:02:03,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:03,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410804024] [2023-08-26 21:02:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:03,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:02:03,079 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 21:02:03,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:02:03,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410804024] [2023-08-26 21:02:03,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410804024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:02:03,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:02:03,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:02:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363660780] [2023-08-26 21:02:03,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:02:03,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:02:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:02:03,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:02:03,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:02:03,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 272 [2023-08-26 21:02:03,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:03,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:02:03,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 272 [2023-08-26 21:02:03,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:02:05,181 INFO L124 PetriNetUnfolderBase]: 18068/26253 cut-off events. [2023-08-26 21:02:05,181 INFO L125 PetriNetUnfolderBase]: For 2182/2182 co-relation queries the response was YES. [2023-08-26 21:02:05,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56732 conditions, 26253 events. 18068/26253 cut-off events. For 2182/2182 co-relation queries the response was YES. Maximal size of possible extension queue 1408. Compared 188127 event pairs, 1991 based on Foata normal form. 0/19930 useless extension candidates. Maximal degree in co-relation 56719. Up to 13791 conditions per place. [2023-08-26 21:02:05,326 INFO L140 encePairwiseOnDemand]: 243/272 looper letters, 130 selfloop transitions, 38 changer transitions 0/172 dead transitions. [2023-08-26 21:02:05,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 172 transitions, 768 flow [2023-08-26 21:02:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:02:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:02:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 902 transitions. [2023-08-26 21:02:05,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737394957983193 [2023-08-26 21:02:05,330 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 902 transitions. [2023-08-26 21:02:05,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 902 transitions. [2023-08-26 21:02:05,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:02:05,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 902 transitions. [2023-08-26 21:02:05,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:05,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:05,338 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:05,339 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 155 flow. Second operand 7 states and 902 transitions. [2023-08-26 21:02:05,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 172 transitions, 768 flow [2023-08-26 21:02:05,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 172 transitions, 764 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:02:05,346 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 481 flow [2023-08-26 21:02:05,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2023-08-26 21:02:05,348 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 9 predicate places. [2023-08-26 21:02:05,348 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 481 flow [2023-08-26 21:02:05,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:05,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:05,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:02:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:02:05,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-26 21:02:05,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1441472653, now seen corresponding path program 1 times [2023-08-26 21:02:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:05,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494922685] [2023-08-26 21:02:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:05,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:02:05,402 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 21:02:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:02:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494922685] [2023-08-26 21:02:05,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494922685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:02:05,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:02:05,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:02:05,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992923856] [2023-08-26 21:02:05,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:02:05,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:02:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:02:05,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:02:05,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:02:05,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 272 [2023-08-26 21:02:05,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 481 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:05,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:02:05,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 272 [2023-08-26 21:02:05,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:02:07,536 INFO L124 PetriNetUnfolderBase]: 17860/26413 cut-off events. [2023-08-26 21:02:07,536 INFO L125 PetriNetUnfolderBase]: For 15860/15860 co-relation queries the response was YES. [2023-08-26 21:02:07,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75886 conditions, 26413 events. 17860/26413 cut-off events. For 15860/15860 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 194956 event pairs, 2459 based on Foata normal form. 790/25572 useless extension candidates. Maximal degree in co-relation 75867. Up to 19063 conditions per place. [2023-08-26 21:02:07,691 INFO L140 encePairwiseOnDemand]: 243/272 looper letters, 152 selfloop transitions, 43 changer transitions 0/199 dead transitions. [2023-08-26 21:02:07,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 199 transitions, 1273 flow [2023-08-26 21:02:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:02:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:02:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 898 transitions. [2023-08-26 21:02:07,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47163865546218486 [2023-08-26 21:02:07,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 898 transitions. [2023-08-26 21:02:07,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 898 transitions. [2023-08-26 21:02:07,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:02:07,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 898 transitions. [2023-08-26 21:02:07,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.28571428571428) internal successors, (898), 7 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:07,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:07,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:07,701 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 481 flow. Second operand 7 states and 898 transitions. [2023-08-26 21:02:07,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 199 transitions, 1273 flow [2023-08-26 21:02:07,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 199 transitions, 1261 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-26 21:02:07,751 INFO L231 Difference]: Finished difference. Result has 83 places, 126 transitions, 927 flow [2023-08-26 21:02:07,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=927, PETRI_PLACES=83, PETRI_TRANSITIONS=126} [2023-08-26 21:02:07,752 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2023-08-26 21:02:07,752 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 126 transitions, 927 flow [2023-08-26 21:02:07,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:07,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:07,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:02:07,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:02:07,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-26 21:02:07,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2130538874, now seen corresponding path program 1 times [2023-08-26 21:02:07,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:07,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039680785] [2023-08-26 21:02:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:07,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:02:07,839 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 21:02:07,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:02:07,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039680785] [2023-08-26 21:02:07,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039680785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:02:07,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:02:07,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:02:07,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355268669] [2023-08-26 21:02:07,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:02:07,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:02:07,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:02:07,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:02:07,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:02:07,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 272 [2023-08-26 21:02:07,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 126 transitions, 927 flow. Second operand has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:07,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:02:07,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 272 [2023-08-26 21:02:07,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:02:10,418 INFO L124 PetriNetUnfolderBase]: 19832/29289 cut-off events. [2023-08-26 21:02:10,418 INFO L125 PetriNetUnfolderBase]: For 38392/38392 co-relation queries the response was YES. [2023-08-26 21:02:10,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97327 conditions, 29289 events. 19832/29289 cut-off events. For 38392/38392 co-relation queries the response was YES. Maximal size of possible extension queue 1723. Compared 219561 event pairs, 1863 based on Foata normal form. 560/28376 useless extension candidates. Maximal degree in co-relation 97303. Up to 17611 conditions per place. [2023-08-26 21:02:10,629 INFO L140 encePairwiseOnDemand]: 244/272 looper letters, 223 selfloop transitions, 75 changer transitions 0/302 dead transitions. [2023-08-26 21:02:10,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 302 transitions, 2300 flow [2023-08-26 21:02:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 21:02:10,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 21:02:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1346 transitions. [2023-08-26 21:02:10,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986631016042783 [2023-08-26 21:02:10,639 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1346 transitions. [2023-08-26 21:02:10,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1346 transitions. [2023-08-26 21:02:10,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:02:10,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1346 transitions. [2023-08-26 21:02:10,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.36363636363636) internal successors, (1346), 11 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:10,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:10,648 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:10,648 INFO L175 Difference]: Start difference. First operand has 83 places, 126 transitions, 927 flow. Second operand 11 states and 1346 transitions. [2023-08-26 21:02:10,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 302 transitions, 2300 flow [2023-08-26 21:02:10,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 302 transitions, 2292 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 21:02:10,754 INFO L231 Difference]: Finished difference. Result has 95 places, 158 transitions, 1443 flow [2023-08-26 21:02:10,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1443, PETRI_PLACES=95, PETRI_TRANSITIONS=158} [2023-08-26 21:02:10,755 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 30 predicate places. [2023-08-26 21:02:10,755 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 158 transitions, 1443 flow [2023-08-26 21:02:10,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:10,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:10,756 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 21:02:10,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:02:10,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-26 21:02:10,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash -747953662, now seen corresponding path program 1 times [2023-08-26 21:02:10,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:10,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882118418] [2023-08-26 21:02:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:10,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:02:10,776 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:02:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:02:10,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:02:10,796 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:02:10,797 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-26 21:02:10,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-26 21:02:10,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-26 21:02:10,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-26 21:02:10,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-26 21:02:10,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-26 21:02:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-26 21:02:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-26 21:02:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-26 21:02:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONASSERT (19 of 29 remaining) [2023-08-26 21:02:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 29 remaining) [2023-08-26 21:02:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-26 21:02:10,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-26 21:02:10,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-26 21:02:10,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-26 21:02:10,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-26 21:02:10,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-26 21:02:10,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-26 21:02:10,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-26 21:02:10,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-26 21:02:10,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-26 21:02:10,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-26 21:02:10,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-26 21:02:10,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-26 21:02:10,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-26 21:02:10,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-26 21:02:10,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-26 21:02:10,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONASSERT (1 of 29 remaining) [2023-08-26 21:02:10,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONASSERT (0 of 29 remaining) [2023-08-26 21:02:10,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:02:10,802 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 21:02:10,803 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:02:10,803 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 21:02:10,858 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:02:10,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 220 transitions, 482 flow [2023-08-26 21:02:10,895 INFO L124 PetriNetUnfolderBase]: 11/217 cut-off events. [2023-08-26 21:02:10,896 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 21:02:10,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 217 events. 11/217 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 562 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 231. Up to 8 conditions per place. [2023-08-26 21:02:10,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 220 transitions, 482 flow [2023-08-26 21:02:10,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 183 transitions, 390 flow [2023-08-26 21:02:10,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:02:10,903 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 183 transitions, 390 flow [2023-08-26 21:02:10,903 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 183 transitions, 390 flow [2023-08-26 21:02:10,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 183 transitions, 390 flow [2023-08-26 21:02:10,929 INFO L124 PetriNetUnfolderBase]: 11/217 cut-off events. [2023-08-26 21:02:10,929 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 21:02:10,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 217 events. 11/217 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 561 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 210. Up to 8 conditions per place. [2023-08-26 21:02:10,940 INFO L119 LiptonReduction]: Number of co-enabled transitions 19704 [2023-08-26 21:02:14,141 INFO L134 LiptonReduction]: Checked pairs total: 56219 [2023-08-26 21:02:14,141 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-26 21:02:14,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:02:14,147 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;@5966796a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:02:14,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-26 21:02:14,149 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:02:14,149 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-26 21:02:14,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:02:14,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:14,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:02:14,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-26 21:02:14,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:14,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1282550497, now seen corresponding path program 1 times [2023-08-26 21:02:14,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:14,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728674184] [2023-08-26 21:02:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:14,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:02:14,171 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 21:02:14,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:02:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728674184] [2023-08-26 21:02:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728674184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:02:14,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:02:14,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:02:14,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981725261] [2023-08-26 21:02:14,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:02:14,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:02:14,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:02:14,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:02:14,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:02:14,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 373 [2023-08-26 21:02:14,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:14,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:02:14,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 373 [2023-08-26 21:02:14,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:02:39,237 INFO L124 PetriNetUnfolderBase]: 333952/430545 cut-off events. [2023-08-26 21:02:39,237 INFO L125 PetriNetUnfolderBase]: For 13294/13294 co-relation queries the response was YES. [2023-08-26 21:02:39,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869933 conditions, 430545 events. 333952/430545 cut-off events. For 13294/13294 co-relation queries the response was YES. Maximal size of possible extension queue 12417. Compared 2933037 event pairs, 150757 based on Foata normal form. 0/290418 useless extension candidates. Maximal degree in co-relation 869921. Up to 427837 conditions per place. [2023-08-26 21:02:41,472 INFO L140 encePairwiseOnDemand]: 359/373 looper letters, 88 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-26 21:02:41,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 412 flow [2023-08-26 21:02:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:02:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:02:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2023-08-26 21:02:41,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906166219839142 [2023-08-26 21:02:41,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2023-08-26 21:02:41,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2023-08-26 21:02:41,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:02:41,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2023-08-26 21:02:41,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:41,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:41,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:41,477 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 188 flow. Second operand 3 states and 549 transitions. [2023-08-26 21:02:41,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 412 flow [2023-08-26 21:02:41,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 403 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-26 21:02:41,491 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 211 flow [2023-08-26 21:02:41,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2023-08-26 21:02:41,492 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-08-26 21:02:41,492 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 211 flow [2023-08-26 21:02:41,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:41,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:41,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:02:41,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:02:41,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-26 21:02:41,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash -390594584, now seen corresponding path program 1 times [2023-08-26 21:02:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:41,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259427797] [2023-08-26 21:02:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:41,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:02:41,538 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 21:02:41,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:02:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259427797] [2023-08-26 21:02:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259427797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:02:41,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:02:41,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:02:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736425220] [2023-08-26 21:02:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:02:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:02:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:02:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:02:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:02:41,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 373 [2023-08-26 21:02:41,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:41,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:02:41,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 373 [2023-08-26 21:02:41,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:03:21,301 INFO L124 PetriNetUnfolderBase]: 510220/671571 cut-off events. [2023-08-26 21:03:21,301 INFO L125 PetriNetUnfolderBase]: For 68079/68079 co-relation queries the response was YES. [2023-08-26 21:03:22,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437612 conditions, 671571 events. 510220/671571 cut-off events. For 68079/68079 co-relation queries the response was YES. Maximal size of possible extension queue 21774. Compared 5183060 event pairs, 84153 based on Foata normal form. 0/521208 useless extension candidates. Maximal degree in co-relation 1437598. Up to 372625 conditions per place. [2023-08-26 21:03:25,390 INFO L140 encePairwiseOnDemand]: 333/373 looper letters, 205 selfloop transitions, 55 changer transitions 0/264 dead transitions. [2023-08-26 21:03:25,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 264 transitions, 1190 flow [2023-08-26 21:03:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:03:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:03:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1275 transitions. [2023-08-26 21:03:25,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883186518575259 [2023-08-26 21:03:25,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1275 transitions. [2023-08-26 21:03:25,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1275 transitions. [2023-08-26 21:03:25,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:03:25,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1275 transitions. [2023-08-26 21:03:25,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.14285714285714) internal successors, (1275), 7 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:03:25,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:03:25,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:03:25,405 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 211 flow. Second operand 7 states and 1275 transitions. [2023-08-26 21:03:25,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 264 transitions, 1190 flow [2023-08-26 21:03:25,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 264 transitions, 1184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:03:25,428 INFO L231 Difference]: Finished difference. Result has 96 places, 132 transitions, 691 flow [2023-08-26 21:03:25,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=691, PETRI_PLACES=96, PETRI_TRANSITIONS=132} [2023-08-26 21:03:25,429 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2023-08-26 21:03:25,429 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 132 transitions, 691 flow [2023-08-26 21:03:25,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:03:25,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:03:25,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:03:25,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:03:25,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-26 21:03:25,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:03:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash -390594583, now seen corresponding path program 1 times [2023-08-26 21:03:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:03:25,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268990889] [2023-08-26 21:03:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:03:25,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:03:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:03:25,478 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 21:03:25,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:03:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268990889] [2023-08-26 21:03:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268990889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:03:25,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:03:25,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:03:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227224184] [2023-08-26 21:03:25,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:03:25,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:03:25,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:03:25,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:03:25,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:03:25,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 373 [2023-08-26 21:03:25,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 132 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:03:25,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:03:25,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 373 [2023-08-26 21:03:25,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:23,800 INFO L124 PetriNetUnfolderBase]: 576016/770927 cut-off events. [2023-08-26 21:04:23,800 INFO L125 PetriNetUnfolderBase]: For 570999/570999 co-relation queries the response was YES. [2023-08-26 21:04:25,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223050 conditions, 770927 events. 576016/770927 cut-off events. For 570999/570999 co-relation queries the response was YES. Maximal size of possible extension queue 27083. Compared 6318637 event pairs, 83085 based on Foata normal form. 33536/777836 useless extension candidates. Maximal degree in co-relation 2223030. Up to 530618 conditions per place. [2023-08-26 21:04:29,161 INFO L140 encePairwiseOnDemand]: 333/373 looper letters, 247 selfloop transitions, 74 changer transitions 0/325 dead transitions. [2023-08-26 21:04:29,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 325 transitions, 2154 flow [2023-08-26 21:04:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:04:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:04:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1275 transitions. [2023-08-26 21:04:29,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883186518575259 [2023-08-26 21:04:29,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1275 transitions. [2023-08-26 21:04:29,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1275 transitions. [2023-08-26 21:04:29,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:29,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1275 transitions. [2023-08-26 21:04:29,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.14285714285714) internal successors, (1275), 7 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:29,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:29,169 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:29,169 INFO L175 Difference]: Start difference. First operand has 96 places, 132 transitions, 691 flow. Second operand 7 states and 1275 transitions. [2023-08-26 21:04:29,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 325 transitions, 2154 flow [2023-08-26 21:04:39,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 325 transitions, 2148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:04:39,809 INFO L231 Difference]: Finished difference. Result has 105 places, 194 transitions, 1563 flow [2023-08-26 21:04:39,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1563, PETRI_PLACES=105, PETRI_TRANSITIONS=194} [2023-08-26 21:04:39,809 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 18 predicate places. [2023-08-26 21:04:39,810 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 194 transitions, 1563 flow [2023-08-26 21:04:39,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:39,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:39,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:04:39,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:04:39,810 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-26 21:04:39,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1439715336, now seen corresponding path program 1 times [2023-08-26 21:04:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:39,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929216037] [2023-08-26 21:04:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:39,880 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 21:04:39,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:39,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929216037] [2023-08-26 21:04:39,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929216037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:04:39,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:04:39,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:04:39,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32101078] [2023-08-26 21:04:39,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:04:39,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:04:39,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:04:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:04:39,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 373 [2023-08-26 21:04:39,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 194 transitions, 1563 flow. Second operand has 7 states, 7 states have (on average 138.71428571428572) internal successors, (971), 7 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:39,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:39,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 373 [2023-08-26 21:04:39,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:06:02,255 INFO L124 PetriNetUnfolderBase]: 665691/889524 cut-off events. [2023-08-26 21:06:02,255 INFO L125 PetriNetUnfolderBase]: For 1530341/1530341 co-relation queries the response was YES. [2023-08-26 21:06:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061869 conditions, 889524 events. 665691/889524 cut-off events. For 1530341/1530341 co-relation queries the response was YES. Maximal size of possible extension queue 31797. Compared 7363919 event pairs, 69167 based on Foata normal form. 14648/879137 useless extension candidates. Maximal degree in co-relation 3061844. Up to 516013 conditions per place. [2023-08-26 21:06:09,533 INFO L140 encePairwiseOnDemand]: 334/373 looper letters, 384 selfloop transitions, 132 changer transitions 0/520 dead transitions. [2023-08-26 21:06:09,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 520 transitions, 4307 flow [2023-08-26 21:06:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 21:06:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 21:06:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1961 transitions. [2023-08-26 21:06:09,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47794296855959056 [2023-08-26 21:06:09,538 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1961 transitions. [2023-08-26 21:06:09,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1961 transitions. [2023-08-26 21:06:09,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:06:09,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1961 transitions. [2023-08-26 21:06:09,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 178.27272727272728) internal successors, (1961), 11 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:06:09,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 373.0) internal successors, (4476), 12 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:06:09,549 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 373.0) internal successors, (4476), 12 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:06:09,549 INFO L175 Difference]: Start difference. First operand has 105 places, 194 transitions, 1563 flow. Second operand 11 states and 1961 transitions. [2023-08-26 21:06:09,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 520 transitions, 4307 flow [2023-08-26 21:06:36,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 520 transitions, 4299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:06:36,807 INFO L231 Difference]: Finished difference. Result has 117 places, 252 transitions, 2565 flow [2023-08-26 21:06:36,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2565, PETRI_PLACES=117, PETRI_TRANSITIONS=252} [2023-08-26 21:06:36,808 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 30 predicate places. [2023-08-26 21:06:36,808 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 252 transitions, 2565 flow [2023-08-26 21:06:36,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.71428571428572) internal successors, (971), 7 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:06:36,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:06:36,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:06:36,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 21:06:36,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-26 21:06:36,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:06:36,810 INFO L85 PathProgramCache]: Analyzing trace with hash 822557870, now seen corresponding path program 1 times [2023-08-26 21:06:36,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:06:36,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671009877] [2023-08-26 21:06:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:06:36,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:06:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:06:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 21:06:36,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:06:36,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671009877] [2023-08-26 21:06:36,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671009877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:06:36,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:06:36,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:06:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064054425] [2023-08-26 21:06:36,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:06:36,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:06:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:06:36,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:06:36,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:06:36,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 373 [2023-08-26 21:06:36,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 252 transitions, 2565 flow. Second operand has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:06:36,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:06:36,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 373 [2023-08-26 21:06:36,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:08:17,623 INFO L124 PetriNetUnfolderBase]: 714639/952742 cut-off events. [2023-08-26 21:08:17,624 INFO L125 PetriNetUnfolderBase]: For 3187376/3187376 co-relation queries the response was YES. [2023-08-26 21:08:23,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3762129 conditions, 952742 events. 714639/952742 cut-off events. For 3187376/3187376 co-relation queries the response was YES. Maximal size of possible extension queue 34731. Compared 7865203 event pairs, 101107 based on Foata normal form. 10396/937671 useless extension candidates. Maximal degree in co-relation 3762099. Up to 692608 conditions per place. [2023-08-26 21:08:30,094 INFO L140 encePairwiseOnDemand]: 337/373 looper letters, 372 selfloop transitions, 144 changer transitions 0/520 dead transitions. [2023-08-26 21:08:30,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 520 transitions, 5772 flow [2023-08-26 21:08:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:08:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:08:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1255 transitions. [2023-08-26 21:08:30,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806587514362313 [2023-08-26 21:08:30,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1255 transitions. [2023-08-26 21:08:30,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1255 transitions. [2023-08-26 21:08:30,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:08:30,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1255 transitions. [2023-08-26 21:08:30,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.28571428571428) internal successors, (1255), 7 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:08:30,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:08:30,142 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 373.0) internal successors, (2984), 8 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:08:30,143 INFO L175 Difference]: Start difference. First operand has 117 places, 252 transitions, 2565 flow. Second operand 7 states and 1255 transitions. [2023-08-26 21:08:30,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 520 transitions, 5772 flow Received shutdown request... [2023-08-26 21:11:57,445 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 [2023-08-26 21:11:58,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown